From 34376b7bde69f8e802ef98861f026925b0653c48 Mon Sep 17 00:00:00 2001
From: Austin Sullivan <asully@chromium.org>
Date: Wed, 7 Dec 2022 17:59:29 +0000
Subject: [PATCH] chore(rebuild): Merge pull request #392 from
 a-sully/remove-fs-duplication

Remove duplication with whatwg/fs

SHA: 7c621de254522340743ed24877be9d3ce410556a
Reason: push, by @a-sully

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
---
 index.html | 3033 ++++++++--------------------------------------------
 1 file changed, 428 insertions(+), 2605 deletions(-)

diff --git a/index.html b/index.html
index f8c62a6..37bb9ea 100644
--- a/index.html
+++ b/index.html
@@ -6,7 +6,7 @@
   <link href="https://www.w3.org/StyleSheets/TR/2021/cg-draft" rel="stylesheet">
   <meta content="Bikeshed version 63e66730b, updated Tue Oct 25 12:35:05 2022 -0700" name="generator">
   <link href="https://wicg.github.io/file-system-access/" rel="canonical">
-  <meta content="52e5879580851e0b55dc17dee692e3fb8a325e55" name="document-revision">
+  <meta content="7c621de254522340743ed24877be9d3ce410556a" name="document-revision">
 <style>
 .domintro dt {
     font-family: Menlo, Consolas, "DejaVu Sans Mono", Monaco, monospace;
@@ -842,7 +842,7 @@
   <div class="head">
    <p data-fill-with="logo"><a class="logo" href="https://www.w3.org/"> <img alt="W3C" height="48" src="https://www.w3.org/StyleSheets/TR/2021/logos/W3C" width="72"> </a> </p>
    <h1 class="p-name no-ref" id="title">File System Access</h1>
-   <p id="w3c-state"><a href="https://www.w3.org/standards/types#CG-DRAFT">Draft Community Group Report</a>, <time class="dt-updated" datetime="2022-11-19">19 November 2022</time></p>
+   <p id="w3c-state"><a href="https://www.w3.org/standards/types#CG-DRAFT">Draft Community Group Report</a>, <time class="dt-updated" datetime="2022-12-07">7 December 2022</time></p>
    <div data-fill-with="spec-metadata">
     <dl>
      <dt>This version:
@@ -861,7 +861,7 @@ <h1 class="p-name no-ref" id="title">File System Access</h1>
   </div>
   <div class="p-summary" data-fill-with="abstract">
    <h2 class="no-num no-toc no-ref heading settled" id="abstract"><span class="content">Abstract</span></h2>
-   <p>This document defines a web platform API that enables developers to build
+   <p>This document extends the API in <a data-link-type="biblio" href="#biblio-fs">[FS]</a> to enables developers to build
 
   powerful web apps that interact with files on the user’s local device.
   It builds on <a data-link-type="biblio" href="#biblio-file-api">File API</a> for file reading capabilities, and adds new API
@@ -891,31 +891,8 @@ <h2 class="no-num no-toc no-ref" id="contents">Table of Contents</h2>
       <li>
        <a href="#api-filesystemhandle"><span class="secno">2.3</span> <span class="content">The <code class="idl"><span>FileSystemHandle</span></code> interface</span></a>
        <ol class="toc">
-        <li><a href="#api-filesystemhandle-issameentry"><span class="secno">2.3.1</span> <span class="content">The <code class="idl"><span>isSameEntry()</span></code> method</span></a>
-        <li><a href="#api-filesystemhandle-querypermission"><span class="secno">2.3.2</span> <span class="content">The <code class="idl"><span>queryPermission()</span></code> method</span></a>
-        <li><a href="#api-filesystemhandle-requestpermission"><span class="secno">2.3.3</span> <span class="content">The <code class="idl"><span>requestPermission()</span></code> method</span></a>
-       </ol>
-      <li>
-       <a href="#api-filesystemfilehandle"><span class="secno">2.4</span> <span class="content">The <code class="idl"><span>FileSystemFileHandle</span></code> interface</span></a>
-       <ol class="toc">
-        <li><a href="#api-filesystemfilehandle-getfile"><span class="secno">2.4.1</span> <span class="content">The <code class="idl"><span>getFile()</span></code> method</span></a>
-        <li><a href="#api-filesystemfilehandle-createwritable"><span class="secno">2.4.2</span> <span class="content">The <code class="idl"><span>createWritable()</span></code> method</span></a>
-       </ol>
-      <li>
-       <a href="#api-filesystemdirectoryhandle"><span class="secno">2.5</span> <span class="content">The <code class="idl"><span>FileSystemDirectoryHandle</span></code> interface</span></a>
-       <ol class="toc">
-        <li><a href="#api-filesystemdirectoryhandle-asynciterable"><span class="secno">2.5.1</span> <span class="content">Directory iteration</span></a>
-        <li><a href="#api-filesystemdirectoryhandle-getfilehandle"><span class="secno">2.5.2</span> <span class="content">The <code class="idl"><span>getFileHandle()</span></code> method</span></a>
-        <li><a href="#api-filesystemdirectoryhandle-getdirectoryhandle"><span class="secno">2.5.3</span> <span class="content">The <code class="idl"><span>getDirectoryHandle()</span></code> method</span></a>
-        <li><a href="#api-filesystemdirectoryhandle-removeentry"><span class="secno">2.5.4</span> <span class="content">The <code class="idl"><span>removeEntry()</span></code> method</span></a>
-        <li><a href="#api-filesystemdirectoryhandle-resolve"><span class="secno">2.5.5</span> <span class="content">The <code class="idl"><span>resolve()</span></code> method</span></a>
-       </ol>
-      <li>
-       <a href="#api-filesystemwritablefilestream"><span class="secno">2.6</span> <span class="content">The <code class="idl"><span>FileSystemWritableFileStream</span></code> interface</span></a>
-       <ol class="toc">
-        <li><a href="#api-filesystemwritablefilestream-write"><span class="secno">2.6.1</span> <span class="content">The <code class="idl"><span>write()</span></code> method</span></a>
-        <li><a href="#api-filesystemwritablefilestream-seek"><span class="secno">2.6.2</span> <span class="content">The <code class="idl"><span>seek()</span></code> method</span></a>
-        <li><a href="#api-filesystemwritablefilestream-truncate"><span class="secno">2.6.3</span> <span class="content">The <code class="idl"><span>truncate()</span></code> method</span></a>
+        <li><a href="#api-filesystemhandle-querypermission"><span class="secno">2.3.1</span> <span class="content">The <code class="idl"><span>queryPermission()</span></code> method</span></a>
+        <li><a href="#api-filesystemhandle-requestpermission"><span class="secno">2.3.2</span> <span class="content">The <code class="idl"><span>requestPermission()</span></code> method</span></a>
        </ol>
      </ol>
     <li>
@@ -933,21 +910,20 @@ <h2 class="no-num no-toc no-ref" id="contents">Table of Contents</h2>
       <li><a href="#api-showdirectorypicker"><span class="secno">3.5</span> <span class="content">The <code class="idl"><span>showDirectoryPicker()</span></code> method</span></a>
       <li><a href="#drag-and-drop"><span class="secno">3.6</span> <span class="content">Drag and Drop</span></a>
      </ol>
-    <li><a href="#sandboxed-filesystem"><span class="secno">4</span> <span class="content">Accessing the Origin Private File System</span></a>
-    <li><a href="#accessibility-considerations"><span class="secno">5</span> <span class="content">Accessibility Considerations</span></a>
+    <li><a href="#accessibility-considerations"><span class="secno">4</span> <span class="content">Accessibility Considerations</span></a>
     <li>
-     <a href="#privacy-considerations"><span class="secno">6</span> <span class="content">Privacy Considerations</span></a>
+     <a href="#privacy-considerations"><span class="secno">5</span> <span class="content">Privacy Considerations</span></a>
      <ol class="toc">
-      <li><a href="#privacy-wide-access"><span class="secno">6.1</span> <span class="content">Users giving access to more, or more sensitive files than they intended.</span></a>
-      <li><a href="#privacy-tracking"><span class="secno">6.2</span> <span class="content">Websites trying to use this API for tracking.</span></a>
-      <li><a href="#privacy-third-party"><span class="secno">6.3</span> <span class="content">First-party vs third-party contexts.</span></a>
+      <li><a href="#privacy-wide-access"><span class="secno">5.1</span> <span class="content">Users giving access to more, or more sensitive files than they intended.</span></a>
+      <li><a href="#privacy-tracking"><span class="secno">5.2</span> <span class="content">Websites trying to use this API for tracking.</span></a>
+      <li><a href="#privacy-third-party"><span class="secno">5.3</span> <span class="content">First-party vs third-party contexts.</span></a>
      </ol>
     <li>
-     <a href="#security-considerations"><span class="secno">7</span> <span class="content">Security Considerations</span></a>
+     <a href="#security-considerations"><span class="secno">6</span> <span class="content">Security Considerations</span></a>
      <ol class="toc">
-      <li><a href="#security-malware"><span class="secno">7.1</span> <span class="content">Malware</span></a>
-      <li><a href="#security-ransomware"><span class="secno">7.2</span> <span class="content">Ransomware attacks</span></a>
-      <li><a href="#filling-up-disk"><span class="secno">7.3</span> <span class="content">Filling up a users disk</span></a>
+      <li><a href="#security-malware"><span class="secno">6.1</span> <span class="content">Malware</span></a>
+      <li><a href="#security-ransomware"><span class="secno">6.2</span> <span class="content">Ransomware attacks</span></a>
+      <li><a href="#filling-up-disk"><span class="secno">6.3</span> <span class="content">Filling up a users disk</span></a>
      </ol>
     <li>
      <a href="#w3c-conformance"><span class="secno"></span> <span class="content">Conformance</span></a>
@@ -988,94 +964,14 @@ <h2 class="heading settled" data-level="1" id="introduction"><span class="secno"
    <p>This API is similar to <a href="https://html.spec.whatwg.org/multipage/input.html#file-upload-state-(type=file)"><code>&lt;input type=file></code></a> and <a href="https://wicg.github.io/entries-api/#html-forms"><code>&lt;input type=file webkitdirectory></code></a> <a data-link-type="biblio" href="#biblio-entries-api">[entries-api]</a> in that user interaction happens through file and directory picker dialogs.
 Unlike those APIs, this API is currently purely a javascript API, and
 does not integrate with forms and/or input elements.</p>
-   <p>Additionally this API also makes it possible for websites to get access to some
-directory without having to first prompt the user for access. This enables use
-cases where a website wants to save data to disk before a user has picked a
-location to save to, without forcing the website to use a completely different
-storage mechanism with a different API for such files. It also makes it easier
-to write automated tests for code using this API. The entry point for this is the <code class="idl"><a data-link-type="idl" href="#dom-storagemanager-getdirectory" id="ref-for-dom-storagemanager-getdirectory">navigator.storage.getDirectory()</a></code> method. This
-is similar to the temporary file system as defined in earlier drafts of <a data-link-type="biblio" href="#biblio-file-system-api">File API: Directories and System</a>.</p>
+   <p>This API extends the API in <a data-link-type="biblio" href="#biblio-fs">[FS]</a>, which specifies an <a data-link-type="dfn" href="https://fs.spec.whatwg.org/#origin-private-file-system" id="ref-for-origin-private-file-system">origin private file system</a> which websites can get access to without having to first prompt the user for access.</p>
    <h2 class="heading settled" data-level="2" id="files-and-directories"><span class="secno">2. </span><span class="content">Files and Directories</span><a class="self-link" href="#files-and-directories"></a></h2>
    <h3 class="heading settled" data-level="2.1" id="concepts"><span class="secno">2.1. </span><span class="content">Concepts</span><a class="self-link" href="#concepts"></a></h3>
-   <p>An <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="entry">entry</dfn> is either a <a data-link-type="dfn" href="#file" id="ref-for-file">file entry</a> or a <a data-link-type="dfn" href="#directory" id="ref-for-directory">directory entry</a>.</p>
-   <p>Each <a data-link-type="dfn" href="#entry" id="ref-for-entry">entry</a> has an associated <dfn class="dfn-paneled" data-dfn-for="entry" data-dfn-type="dfn" data-noexport id="entry-name">name</dfn> (a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#string" id="ref-for-string">string</a>).</p>
-   <p>A <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="valid-file-name">valid file name</dfn> is a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#string" id="ref-for-string①">string</a> that is not an empty string, is not equal to "." or "..",
-and does not contain '/' or any other character used as path separator on the underlying platform.</p>
-   <p class="note" role="note"><span>Note:</span> This means that '\' is not allowed in names on Windows, but might be allowed on
-other operating systems. Additionally underlying file systems might have further restrictions
-on what names are or aren’t allowed, so a string merely being a <a data-link-type="dfn" href="#valid-file-name" id="ref-for-valid-file-name">valid file name</a> is not
-a guarantee that creating a file or directory with that name will succeed.</p>
-   <p class="issue" id="issue-58d5d75b"><a class="self-link" href="#issue-58d5d75b"></a> We should consider having further normative restrictions on file names that will
-never be allowed using this API, rather than leaving it entirely up to underlying file
-systems.</p>
    <p>A <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="valid-suffix-code-point">valid suffix code point</dfn> is a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#code-point" id="ref-for-code-point">code point</a> that is <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#ascii-alphanumeric" id="ref-for-ascii-alphanumeric">ASCII alphanumeric</a>,
 U+002B (+), or U+002E (.).</p>
    <p class="note" role="note"><span>Note:</span> These code points were chosen to support most pre-existing file formats. The vast
 majority of file extensions are purely alphanumeric, but compound extensions (such as <code>.tar.gz</code>) and extensions such as <code>.c++</code> for C++ source code are also fairly common,
 hence the inclusion of + and . as allowed code points.</p>
-   <p>A <dfn class="dfn-paneled" data-dfn-type="dfn" data-lt="file|file entry" data-noexport id="file">file entry</dfn> additionally consists of <dfn class="dfn-paneled" data-dfn-for="file entry" data-dfn-type="dfn" data-noexport id="file-entry-binary-data">binary data</dfn> (a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte-sequence" id="ref-for-byte-sequence">byte sequence</a>) and a <dfn class="dfn-paneled" data-dfn-for="file entry" data-dfn-type="dfn" data-noexport id="file-entry-modification-timestamp">modification timestamp</dfn> (a number representing the number of milliseconds since the <a data-link-type="dfn" href="https://w3c.github.io/FileAPI/#UnixEpoch" id="ref-for-UnixEpoch">Unix Epoch</a>).</p>
-   <p>A <dfn class="dfn-paneled" data-dfn-type="dfn" data-lt="directory|directory entry" data-noexport id="directory">directory entry</dfn> additionally consists of a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#ordered-set" id="ref-for-ordered-set">set</a> of <dfn class="dfn-paneled" data-dfn-for="directory entry" data-dfn-type="dfn" data-noexport id="directory-entry-children">children</dfn>, which are themselves <a data-link-type="dfn" href="#entry" id="ref-for-entry①">entries</a>. Each member is either a <a data-link-type="dfn" href="#file" id="ref-for-file①">file</a> or a <a data-link-type="dfn" href="#directory" id="ref-for-directory①">directory</a>.</p>
-   <p>An <a data-link-type="dfn" href="#entry" id="ref-for-entry②">entry</a> <var>entry</var> should be <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-contain" id="ref-for-list-contain">contained</a> in the <a data-link-type="dfn" href="#directory-entry-children" id="ref-for-directory-entry-children">children</a> of at most one <a data-link-type="dfn" href="#directory" id="ref-for-directory②">directory entry</a>, and that directory entry is also known as <var>entry</var>’s <dfn class="dfn-paneled" data-dfn-for="entry" data-dfn-type="dfn" data-noexport id="entry-parent">parent</dfn>.
-An <a data-link-type="dfn" href="#entry" id="ref-for-entry③">entry</a>'s <a data-link-type="dfn" href="#entry-parent" id="ref-for-entry-parent">parent</a> is null if no such directory entry exists.</p>
-   <p class="note" role="note"><span>Note:</span> Two different <a data-link-type="dfn" href="#entry" id="ref-for-entry④">entries</a> can represent the same file or directory on disk, in which
-case it is possible for both entries to have a different parent, or for one entry to have a
-parent while the other entry does not have a parent. Typically an entry does not have a parent
-if it was returned by <code class="idl"><a data-link-type="idl" href="#dom-storagemanager-getdirectory" id="ref-for-dom-storagemanager-getdirectory①">navigator.storage.getDirectory()</a></code> or one of the <a data-link-type="dfn" href="#local-file-system-handle-factories" id="ref-for-local-file-system-handle-factories">local file system handle factories</a>,
-and an entry will have a parent in all other cases.</p>
-   <p><a data-link-type="dfn" href="#entry" id="ref-for-entry⑤">Entries</a> can (but don’t have to) be backed by files on the host operating system’s local file system,
-so it is possible for the <a data-link-type="dfn" href="#file-entry-binary-data" id="ref-for-file-entry-binary-data">binary data</a>, <a data-link-type="dfn" href="#file-entry-modification-timestamp" id="ref-for-file-entry-modification-timestamp">modification timestamp</a>,
-and <a data-link-type="dfn" href="#directory-entry-children" id="ref-for-directory-entry-children①">children</a> of entries to be modified by applications outside of this specification.
-Exactly how external changes are reflected in the data structures defined by this specification,
-as well as how changes made to the data structures defined here are reflected externally
-is left up to individual user-agent implementations.</p>
-   <p>An <a data-link-type="dfn" href="#entry" id="ref-for-entry⑥">entry</a> <var>a</var> is <dfn class="dfn-paneled" data-dfn-for="entry" data-dfn-type="dfn" data-noexport id="entry-the-same-as">the same as</dfn> an <a data-link-type="dfn" href="#entry" id="ref-for-entry⑦">entry</a> <var>b</var> if <var>a</var> is equal to <var>b</var>, or
-if <var>a</var> and <var>b</var> are backed by the same file or directory on the local file system.</p>
-   <p class="issue" id="issue-88e7ec9d"><a class="self-link" href="#issue-88e7ec9d"></a> TODO: Explain better how entries map to files on disk (multiple entries can map to the same file or
-directory on disk but an entry doesn’t have to map to any file on disk).</p>
-   <div class="algorithm" data-algorithm="resolve" data-algorithm-for="entry">
-     To <dfn class="dfn-paneled" data-dfn-for="entry" data-dfn-type="dfn" data-noexport id="entry-resolve">resolve</dfn> an <a data-link-type="dfn" href="#entry" id="ref-for-entry⑧">entry</a> <var>child</var> relative to a <a data-link-type="dfn" href="#directory" id="ref-for-directory③">directory entry</a> <var>root</var>,
-run the following steps: 
-    <ol>
-     <li data-md>
-      <p>Let <var>result</var> be <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-new-promise" id="ref-for-a-new-promise">a new promise</a>.</p>
-     <li data-md>
-      <p>Run the following steps <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel" id="ref-for-in-parallel">in parallel</a>:</p>
-      <ol>
-       <li data-md>
-        <p>If <var>child</var> is <a data-link-type="dfn" href="#entry-the-same-as" id="ref-for-entry-the-same-as">the same as</a> <var>root</var>, <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve">resolve</a> <var>result</var> with an empty list, and abort.</p>
-       <li data-md>
-        <p>Let <var>childPromises</var> be « ».</p>
-       <li data-md>
-        <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-iterate" id="ref-for-list-iterate">For each</a> <var>entry</var> of <var>root</var>’s <a data-link-type="dfn" href="#filesystemhandle-entry" id="ref-for-filesystemhandle-entry">entry</a>'s <a data-link-type="dfn" href="#directory-entry-children" id="ref-for-directory-entry-children②">children</a>:</p>
-        <ol>
-         <li data-md>
-          <p>Let <var>p</var> be the result of <a data-link-type="dfn" href="#entry-resolve" id="ref-for-entry-resolve">resolving</a> <var>child</var> relative to <var>entry</var>.</p>
-         <li data-md>
-          <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-append" id="ref-for-list-append">Append</a> <var>p</var> to <var>childPromises</var>.</p>
-         <li data-md>
-          <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#upon-fulfillment" id="ref-for-upon-fulfillment">Upon fulfillment</a> of <var>p</var> with value <var>path</var>:</p>
-          <ol>
-           <li data-md>
-            <p>If <var>path</var> is not null:</p>
-            <ol>
-             <li data-md>
-              <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-prepend" id="ref-for-list-prepend">Prepend</a> <var>entry</var>’s <a data-link-type="dfn" href="#entry-name" id="ref-for-entry-name">name</a> to <var>path</var>.</p>
-             <li data-md>
-              <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve①">Resolve</a> <var>result</var> with <var>path</var>.</p>
-            </ol>
-          </ol>
-        </ol>
-       <li data-md>
-        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#wait-for-all" id="ref-for-wait-for-all">Wait for all</a> <var>childPromises</var>, with the following success steps:</p>
-        <ol>
-         <li data-md>
-          <p>If <var>result</var> hasn’t been resolved yet, <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve②">resolve</a> <var>result</var> with <code>null</code>.</p>
-        </ol>
-      </ol>
-     <li data-md>
-      <p>Return <var>result</var>.</p>
-    </ol>
-   </div>
    <h3 class="heading settled" data-level="2.2" id="permissions"><span class="secno">2.2. </span><span class="content">Permissions</span><a class="self-link" href="#permissions"></a></h3>
    <p>The <dfn class="dfn-paneled idl-code" data-dfn-for="PermissionName" data-dfn-type="enum-value" data-export id="dom-permissionname-file-system"><code>"file-system"</code></dfn> <a data-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-powerful-feature" id="ref-for-dfn-powerful-feature">powerful feature</a>'s
 permission-related algorithms and types are defined as follows:</p>
@@ -1089,7 +985,7 @@ <h3 class="heading settled" data-level="2.2" id="permissions"><span class="secno
 };
 
 <c- b>dictionary</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="dictionary" data-export id="dictdef-filesystempermissiondescriptor"><code><c- g>FileSystemPermissionDescriptor</c-></code></dfn> : <a data-link-type="idl-name" href="https://w3c.github.io/permissions/#dom-permissiondescriptor" id="ref-for-dom-permissiondescriptor"><c- n>PermissionDescriptor</c-></a> {
-  <c- b>required</c-> <a data-link-type="idl-name" href="#filesystemhandle" id="ref-for-filesystemhandle"><c- n>FileSystemHandle</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="FileSystemPermissionDescriptor" data-dfn-type="dict-member" data-export data-type="FileSystemHandle " id="dom-filesystempermissiondescriptor-handle"><code><c- g>handle</c-></code></dfn>;
+  <c- b>required</c-> <a data-link-type="idl-name" href="https://fs.spec.whatwg.org/#filesystemhandle" id="ref-for-filesystemhandle"><c- n>FileSystemHandle</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="FileSystemPermissionDescriptor" data-dfn-type="dict-member" data-export data-type="FileSystemHandle " id="dom-filesystempermissiondescriptor-handle"><code><c- g>handle</c-></code></dfn>;
   <a data-link-type="idl-name" href="#enumdef-filesystempermissionmode" id="ref-for-enumdef-filesystempermissionmode"><c- n>FileSystemPermissionMode</c-></a> <dfn class="dfn-paneled idl-code" data-default="&quot;read&quot;" data-dfn-for="FileSystemPermissionDescriptor" data-dfn-type="dict-member" data-export data-type="FileSystemPermissionMode " id="dom-filesystempermissiondescriptor-mode"><code><c- g>mode</c-></code></dfn> = "read";
 };
 </pre>
@@ -1100,14 +996,14 @@ <h3 class="heading settled" data-level="2.2" id="permissions"><span class="secno
 run these steps: 
       <ol>
        <li data-md>
-        <p>Let <var>entry</var> be <var>desc</var>.<code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-handle" id="ref-for-dom-filesystempermissiondescriptor-handle">handle</a></code>'s <a data-link-type="dfn" href="#filesystemhandle-entry" id="ref-for-filesystemhandle-entry①">entry</a>.</p>
+        <p>Let <var>entry</var> be <var>desc</var>.<code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-handle" id="ref-for-dom-filesystempermissiondescriptor-handle">handle</a></code>'s <a data-link-type="dfn" href="https://fs.spec.whatwg.org/#filesystemhandle-entry" id="ref-for-filesystemhandle-entry">entry</a>.</p>
        <li data-md>
-        <p>If <var>entry</var> represents an <a data-link-type="dfn" href="#entry" id="ref-for-entry⑨">entry</a> in an <a data-link-type="dfn">origin private file system</a>,
+        <p>If <var>entry</var> represents a <a data-link-type="dfn" href="https://fs.spec.whatwg.org/#entry" id="ref-for-entry">file system entry</a> in an <a data-link-type="dfn" href="https://fs.spec.whatwg.org/#origin-private-file-system" id="ref-for-origin-private-file-system①">origin private file system</a>,
 this descriptor’s <a data-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-permission-state" id="ref-for-dfn-permission-state">permission state</a> must always be <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissionstate-granted" id="ref-for-dom-permissionstate-granted">"granted"</a></code>.</p>
        <li data-md>
-        <p>Otherwise, if <var>entry</var>’s <a data-link-type="dfn" href="#entry-parent" id="ref-for-entry-parent①">parent</a> is not null, this descriptor’s <a data-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-permission-state" id="ref-for-dfn-permission-state①">permission state</a> must be
+        <p>Otherwise, if <var>entry</var>’s <a data-link-type="dfn" href="https://fs.spec.whatwg.org/#entry-parent" id="ref-for-entry-parent">parent</a> is not null, this descriptor’s <a data-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-permission-state" id="ref-for-dfn-permission-state①">permission state</a> must be
 equal to the <a data-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-permission-state" id="ref-for-dfn-permission-state②">permission state</a> for a descriptor with the same <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-mode" id="ref-for-dom-filesystempermissiondescriptor-mode">mode</a></code>,
-and a <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-handle" id="ref-for-dom-filesystempermissiondescriptor-handle①">handle</a></code> representing <var>entry</var>’s <a data-link-type="dfn" href="#entry-parent" id="ref-for-entry-parent②">parent</a>.</p>
+and a <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-handle" id="ref-for-dom-filesystempermissiondescriptor-handle①">handle</a></code> representing <var>entry</var>’s <a data-link-type="dfn" href="https://fs.spec.whatwg.org/#entry-parent" id="ref-for-entry-parent①">parent</a>.</p>
        <li data-md>
         <p>Otherwise, if <var>desc</var>.<code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-mode" id="ref-for-dom-filesystempermissiondescriptor-mode①">mode</a></code> is <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-readwrite" id="ref-for-dom-filesystempermissionmode-readwrite">"readwrite"</a></code>:</p>
         <ol>
@@ -1150,7 +1046,7 @@ <h3 class="heading settled" data-level="2.2" id="permissions"><span class="secno
      </div>
    </dl>
    <div class="algorithm" data-algorithm="querying file system permission">
-     To <dfn class="dfn-paneled" data-dfn-type="dfn" data-lt="querying file system permission|query file system permission" data-noexport id="querying-file-system-permission">query file system permission</dfn> given a <code class="idl"><a data-link-type="idl" href="#filesystemhandle" id="ref-for-filesystemhandle①">FileSystemHandle</a></code> <var>handle</var> and a <code class="idl"><a data-link-type="idl" href="#enumdef-filesystempermissionmode" id="ref-for-enumdef-filesystempermissionmode①">FileSystemPermissionMode</a></code> <var>mode</var>, run these steps: 
+     To <dfn class="dfn-paneled" data-dfn-type="dfn" data-lt="querying file system permission|query file system permission" data-noexport id="querying-file-system-permission">query file system permission</dfn> given a <code class="idl"><a data-link-type="idl" href="https://fs.spec.whatwg.org/#filesystemhandle" id="ref-for-filesystemhandle①">FileSystemHandle</a></code> <var>handle</var> and a <code class="idl"><a data-link-type="idl" href="#enumdef-filesystempermissionmode" id="ref-for-enumdef-filesystempermissionmode①">FileSystemPermissionMode</a></code> <var>mode</var>, run these steps: 
     <ol>
      <li data-md>
       <p>Let <var>desc</var> be a <code class="idl"><a data-link-type="idl" href="#dictdef-filesystempermissiondescriptor" id="ref-for-dictdef-filesystempermissiondescriptor③">FileSystemPermissionDescriptor</a></code>.</p>
@@ -1161,1080 +1057,146 @@ <h3 class="heading settled" data-level="2.2" id="permissions"><span class="secno
      <li data-md>
       <p>Set <var>desc</var>.<code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-mode" id="ref-for-dom-filesystempermissiondescriptor-mode③">mode</a></code> to <var>mode</var>.</p>
      <li data-md>
-      <p>Return <var>desc</var>’s <a data-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-permission-state" id="ref-for-dfn-permission-state⑤">permission state</a>.</p>
-    </ol>
-   </div>
-   <div class="algorithm" data-algorithm="requesting file system permission">
-     To <dfn class="dfn-paneled" data-dfn-type="dfn" data-lt="requesting file system permission|request file system permission" data-noexport id="requesting-file-system-permission">request file system permission</dfn> given a <code class="idl"><a data-link-type="idl" href="#filesystemhandle" id="ref-for-filesystemhandle②">FileSystemHandle</a></code> <var>handle</var> and a <code class="idl"><a data-link-type="idl" href="#enumdef-filesystempermissionmode" id="ref-for-enumdef-filesystempermissionmode②">FileSystemPermissionMode</a></code> <var>mode</var>, run these steps: 
-    <ol>
-     <li data-md>
-      <p>Let <var>desc</var> be a <code class="idl"><a data-link-type="idl" href="#dictdef-filesystempermissiondescriptor" id="ref-for-dictdef-filesystempermissiondescriptor④">FileSystemPermissionDescriptor</a></code>.</p>
-     <li data-md>
-      <p>Set <var>desc</var>.<code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissiondescriptor-name" id="ref-for-dom-permissiondescriptor-name①">name</a></code> to <code class="idl"><a data-link-type="idl" href="#dom-permissionname-file-system" id="ref-for-dom-permissionname-file-system①">"file-system"</a></code>.</p>
-     <li data-md>
-      <p>Set <var>desc</var>.<code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-handle" id="ref-for-dom-filesystempermissiondescriptor-handle⑤">handle</a></code> to <var>handle</var>.</p>
-     <li data-md>
-      <p>Set <var>desc</var>.<code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-mode" id="ref-for-dom-filesystempermissiondescriptor-mode④">mode</a></code> to <var>mode</var>.</p>
-     <li data-md>
-      <p>Let <var>status</var> be the result of running <a data-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-create-a-permissionstatus" id="ref-for-dfn-create-a-permissionstatus">create a PermissionStatus</a> for <var>desc</var>.</p>
-     <li data-md>
-      <p>Run the <a data-link-type="dfn" href="https://wicg.github.io/permissions-request/#permission-request-algorithm" id="ref-for-permission-request-algorithm①">permission request algorithm</a> for the <code class="idl"><a data-link-type="idl" href="#dom-permissionname-file-system" id="ref-for-dom-permissionname-file-system②">"file-system"</a></code> feature, given <var>desc</var> and <var>status</var>.</p>
-     <li data-md>
-      <p>Return <var>desc</var>’s <a data-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-permission-state" id="ref-for-dfn-permission-state⑥">permission state</a>.</p>
-    </ol>
-   </div>
-   <p class="issue" id="issue-7fc2f5c7"><a class="self-link" href="#issue-7fc2f5c7"></a> Currently <code class="idl"><a data-link-type="idl" href="#enumdef-filesystempermissionmode" id="ref-for-enumdef-filesystempermissionmode③">FileSystemPermissionMode</a></code> can only be <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-read" id="ref-for-dom-filesystempermissionmode-read①">"read"</a></code> or <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-readwrite" id="ref-for-dom-filesystempermissionmode-readwrite①">"readwrite"</a></code>. In
-the future we might want to add a "write" mode as well to support write-only handles. <a href="https://github.com/wicg/file-system-access/issues/119">[Issue #119]</a></p>
-   <h3 class="heading settled" data-level="2.3" id="api-filesystemhandle"><span class="secno">2.3. </span><span class="content">The <code class="idl"><a data-link-type="idl" href="#filesystemhandle" id="ref-for-filesystemhandle③">FileSystemHandle</a></code> interface</span><a class="self-link" href="#api-filesystemhandle"></a></h3>
-<pre class="idl highlight def"><c- b>dictionary</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="dictionary" data-export id="dictdef-filesystemhandlepermissiondescriptor"><code><c- g>FileSystemHandlePermissionDescriptor</c-></code></dfn> {
-  <a data-link-type="idl-name" href="#enumdef-filesystempermissionmode" id="ref-for-enumdef-filesystempermissionmode④"><c- n>FileSystemPermissionMode</c-></a> <dfn class="dfn-paneled idl-code" data-default="&quot;read&quot;" data-dfn-for="FileSystemHandlePermissionDescriptor" data-dfn-type="dict-member" data-export data-type="FileSystemPermissionMode " id="dom-filesystemhandlepermissiondescriptor-mode"><code><c- g>mode</c-></code></dfn> = "read";
-};
-
-<c- b>enum</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="enum" data-export id="enumdef-filesystemhandlekind"><code><c- g>FileSystemHandleKind</c-></code></dfn> {
-  <dfn class="dfn-paneled idl-code" data-dfn-for="FileSystemHandleKind" data-dfn-type="enum-value" data-export id="dom-filesystemhandlekind-file"><code><c- s>"file"</c-></code></dfn>,
-  <dfn class="dfn-paneled idl-code" data-dfn-for="FileSystemHandleKind" data-dfn-type="enum-value" data-export id="dom-filesystemhandlekind-directory"><code><c- s>"directory"</c-></code></dfn>,
-};
-
-[<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#Exposed" id="ref-for-Exposed"><c- g>Exposed</c-></a>=(<c- n>Window</c->,<c- n>Worker</c->), <a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#SecureContext" id="ref-for-SecureContext"><c- g>SecureContext</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/structured-data.html#serializable" id="ref-for-serializable"><c- g>Serializable</c-></a>]
-<c- b>interface</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="interface" data-export id="filesystemhandle"><code><c- g>FileSystemHandle</c-></code></dfn> {
-  <c- b>readonly</c-> <c- b>attribute</c-> <a data-link-type="idl-name" href="#enumdef-filesystemhandlekind" id="ref-for-enumdef-filesystemhandlekind"><c- n>FileSystemHandleKind</c-></a> <a class="idl-code" data-link-type="attribute" data-readonly data-type="FileSystemHandleKind" href="#dom-filesystemhandle-kind" id="ref-for-dom-filesystemhandle-kind"><c- g>kind</c-></a>;
-  <c- b>readonly</c-> <c- b>attribute</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString" id="ref-for-idl-USVString"><c- b>USVString</c-></a> <a class="idl-code" data-link-type="attribute" data-readonly data-type="USVString" href="#dom-filesystemhandle-name" id="ref-for-dom-filesystemhandle-name"><c- g>name</c-></a>;
-
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise"><c- b>Promise</c-></a>&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-boolean" id="ref-for-idl-boolean"><c- b>boolean</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-filesystemhandle-issameentry" id="ref-for-dom-filesystemhandle-issameentry"><c- g>isSameEntry</c-></a>(<a data-link-type="idl-name" href="#filesystemhandle" id="ref-for-filesystemhandle④"><c- n>FileSystemHandle</c-></a> <dfn class="idl-code" data-dfn-for="FileSystemHandle/isSameEntry(other)" data-dfn-type="argument" data-export id="dom-filesystemhandle-issameentry-other-other"><code><c- g>other</c-></code><a class="self-link" href="#dom-filesystemhandle-issameentry-other-other"></a></dfn>);
-
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise①"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="https://w3c.github.io/permissions/#dom-permissionstate" id="ref-for-dom-permissionstate"><c- n>PermissionState</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-filesystemhandle-querypermission" id="ref-for-dom-filesystemhandle-querypermission"><c- g>queryPermission</c-></a>(<c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-filesystemhandlepermissiondescriptor" id="ref-for-dictdef-filesystemhandlepermissiondescriptor"><c- n>FileSystemHandlePermissionDescriptor</c-></a> <dfn class="idl-code" data-dfn-for="FileSystemHandle/queryPermission(descriptor), FileSystemHandle/queryPermission()" data-dfn-type="argument" data-export id="dom-filesystemhandle-querypermission-descriptor-descriptor"><code><c- g>descriptor</c-></code><a class="self-link" href="#dom-filesystemhandle-querypermission-descriptor-descriptor"></a></dfn> = {});
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise②"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="https://w3c.github.io/permissions/#dom-permissionstate" id="ref-for-dom-permissionstate①"><c- n>PermissionState</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-filesystemhandle-requestpermission" id="ref-for-dom-filesystemhandle-requestpermission"><c- g>requestPermission</c-></a>(<c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-filesystemhandlepermissiondescriptor" id="ref-for-dictdef-filesystemhandlepermissiondescriptor①"><c- n>FileSystemHandlePermissionDescriptor</c-></a> <dfn class="idl-code" data-dfn-for="FileSystemHandle/requestPermission(descriptor), FileSystemHandle/requestPermission()" data-dfn-type="argument" data-export id="dom-filesystemhandle-requestpermission-descriptor-descriptor"><code><c- g>descriptor</c-></code><a class="self-link" href="#dom-filesystemhandle-requestpermission-descriptor-descriptor"></a></dfn> = {});
-};
-</pre>
-   <p>A <code class="idl"><a data-link-type="idl" href="#filesystemhandle" id="ref-for-filesystemhandle⑤">FileSystemHandle</a></code> object represents an <a data-link-type="dfn" href="#entry" id="ref-for-entry①⓪">entry</a>. Each <code class="idl"><a data-link-type="idl" href="#filesystemhandle" id="ref-for-filesystemhandle⑥">FileSystemHandle</a></code> object is associated
-with an <dfn class="dfn-paneled" data-dfn-for="FileSystemHandle" data-dfn-type="dfn" data-noexport id="filesystemhandle-entry">entry</dfn> (an <a data-link-type="dfn" href="#entry" id="ref-for-entry①①">entry</a>). Multiple separate objects implementing
-the <code class="idl"><a data-link-type="idl" href="#filesystemhandle" id="ref-for-filesystemhandle⑦">FileSystemHandle</a></code> interface can all be associated with the same <a data-link-type="dfn" href="#entry" id="ref-for-entry①②">entry</a> simultaneously.</p>
-   <div class="algorithm" data-algorithm="serialization steps">
-     <code class="idl"><a data-link-type="idl" href="#filesystemhandle" id="ref-for-filesystemhandle⑧">FileSystemHandle</a></code> objects are <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/structured-data.html#serializable-objects" id="ref-for-serializable-objects">serializable objects</a>. 
-    <p><strong class="advisement"> In the Origin Trial as available in Chrome 78, these objects are not yet serializable.
-In Chrome 82 they are.</strong></p>
-    <p>Their <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/structured-data.html#serialization-steps" id="ref-for-serialization-steps">serialization steps</a>, given <var>value</var>, <var>serialized</var> and <var>forStorage</var> are:</p>
-    <ol>
-     <li data-md>
-      <p>Set <var>serialized</var>.[[Origin]] to <var>value</var>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#relevant-settings-object" id="ref-for-relevant-settings-object①">relevant settings object</a>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-settings-object-origin" id="ref-for-concept-settings-object-origin①">origin</a>.</p>
-     <li data-md>
-      <p>Set <var>serialized</var>.[[Entry]] to <var>value</var>’s <a data-link-type="dfn" href="#filesystemhandle-entry" id="ref-for-filesystemhandle-entry②">entry</a>.</p>
-    </ol>
-   </div>
-   <div class="algorithm" data-algorithm="deserialization steps">
-     Their <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/structured-data.html#deserialization-steps" id="ref-for-deserialization-steps">deserialization steps</a>, given <var>serialized</var> and <var>value</var> are: 
-    <ol>
-     <li data-md>
-      <p>If <var>serialized</var>.[[Origin]] is not <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsers.html#same-origin" id="ref-for-same-origin①">same origin</a> with <var>value</var>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#relevant-settings-object" id="ref-for-relevant-settings-object②">relevant settings object</a>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-settings-object-origin" id="ref-for-concept-settings-object-origin②">origin</a>,
- then throw a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#datacloneerror" id="ref-for-datacloneerror">DataCloneError</a></code>.</p>
-     <li data-md>
-      <p>Set <var>value</var>’s <a data-link-type="dfn" href="#filesystemhandle-entry" id="ref-for-filesystemhandle-entry③">entry</a> to <var>serialized</var>.[[Entry]]</p>
-    </ol>
-   </div>
-   <div class="note domintro" role="note">
-    <dl>
-     <dt data-md><var>handle</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandle-kind" id="ref-for-dom-filesystemhandle-kind①">kind</a></code>
-     <dd data-md>
-      <p>Returns <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandlekind-file" id="ref-for-dom-filesystemhandlekind-file">"file"</a></code> if <var>handle</var> is a <code class="idl"><a data-link-type="idl" href="#filesystemfilehandle" id="ref-for-filesystemfilehandle">FileSystemFileHandle</a></code>,
- or <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandlekind-directory" id="ref-for-dom-filesystemhandlekind-directory">"directory"</a></code> if <var>handle</var> is a <code class="idl"><a data-link-type="idl" href="#filesystemdirectoryhandle" id="ref-for-filesystemdirectoryhandle">FileSystemDirectoryHandle</a></code>.</p>
-      <p>This can be used to distinguish files from directories when iterating over the contents
- of a directory.</p>
-     <dt data-md><var>handle</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandle-name" id="ref-for-dom-filesystemhandle-name①">name</a></code>
-     <dd data-md>
-      <p>Returns the <a data-link-type="dfn" href="#entry-name" id="ref-for-entry-name①">name</a> of the entry represented by <var>handle</var>.</p>
-    </dl>
-   </div>
-   <p>The <dfn class="dfn-paneled idl-code" data-dfn-for="FileSystemHandle" data-dfn-type="attribute" data-export id="dom-filesystemhandle-kind"><code>kind</code></dfn> attribute must
-return <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandlekind-file" id="ref-for-dom-filesystemhandlekind-file①">"file"</a></code> if the associated <a data-link-type="dfn" href="#filesystemhandle-entry" id="ref-for-filesystemhandle-entry④">entry</a> is a <a data-link-type="dfn" href="#file" id="ref-for-file②">file entry</a>,
-and return <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandlekind-directory" id="ref-for-dom-filesystemhandlekind-directory①">"directory"</a></code> otherwise.</p>
-   <p>The <dfn class="dfn-paneled idl-code" data-dfn-for="FileSystemHandle" data-dfn-type="attribute" data-export id="dom-filesystemhandle-name"><code>name</code></dfn> attribute must return the <a data-link-type="dfn" href="#entry-name" id="ref-for-entry-name②">name</a> of the
-associated <a data-link-type="dfn" href="#filesystemhandle-entry" id="ref-for-filesystemhandle-entry⑤">entry</a>.</p>
-   <h4 class="heading settled" data-level="2.3.1" id="api-filesystemhandle-issameentry"><span class="secno">2.3.1. </span><span class="content">The <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandle-issameentry" id="ref-for-dom-filesystemhandle-issameentry①">isSameEntry()</a></code> method</span><a class="self-link" href="#api-filesystemhandle-issameentry"></a></h4>
-   <div class="note domintro" role="note">
-    <dl>
-     <dt data-md><var>same</var> = await <var>handle1</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandle-issameentry" id="ref-for-dom-filesystemhandle-issameentry②">isSameEntry</a></code>( <var>handle2</var> )
-     <dd data-md>
-      <p>Returns true if <var>handle1</var> and <var>handle2</var> represent the same file or directory.</p>
-    </dl>
-   </div>
-   <p><strong class="advisement"> This method is first available in Chrome 82.</strong></p>
-   <div class="algorithm" data-algorithm="isSameEntry(other)" data-algorithm-for="FileSystemHandle">
-     The <dfn class="dfn-paneled idl-code" data-dfn-for="FileSystemHandle" data-dfn-type="method" data-export id="dom-filesystemhandle-issameentry"><code>isSameEntry(<var>other</var>)</code></dfn> method, when invoked, must run these steps: 
-    <ol>
-     <li data-md>
-      <p>Let <var>realm</var> be <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this">this</a>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-realm" id="ref-for-concept-relevant-realm">relevant Realm</a>.</p>
-     <li data-md>
-      <p>Let <var>p</var> be <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-new-promise" id="ref-for-a-new-promise①">a new promise</a> in <var>realm</var>.</p>
-     <li data-md>
-      <p>Run the following steps <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel" id="ref-for-in-parallel①">in parallel</a>:</p>
-      <ol>
-       <li data-md>
-        <p>If <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this①">this</a>'s <a data-link-type="dfn" href="#filesystemhandle-entry" id="ref-for-filesystemhandle-entry⑥">entry</a> is <a data-link-type="dfn" href="#entry-the-same-as" id="ref-for-entry-the-same-as①">the same as</a> <var>other</var>’s <a data-link-type="dfn" href="#filesystemhandle-entry" id="ref-for-filesystemhandle-entry⑦">entry</a>, <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve③">resolve</a> <var>p</var> with <code>true</code>.</p>
-       <li data-md>
-        <p>Else <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve④">resolve</a> <var>p</var> with <code>false</code>.</p>
-      </ol>
-     <li data-md>
-      <p>Return <var>p</var>.</p>
-    </ol>
-   </div>
-   <h4 class="heading settled" data-level="2.3.2" id="api-filesystemhandle-querypermission"><span class="secno">2.3.2. </span><span class="content">The <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandle-querypermission" id="ref-for-dom-filesystemhandle-querypermission①">queryPermission()</a></code> method</span><a class="self-link" href="#api-filesystemhandle-querypermission"></a></h4>
-   <div class="mdn-anno wrapped after">
-    <button class="mdn-anno-btn"><b class="less-than-two-engines-flag" title="This feature is in less than two current engines.">⚠</b><span>MDN</span></button>
-    <div class="feature">
-     <p><a href="https://developer.mozilla.org/en-US/docs/Web/API/FileSystemHandle/queryPermission" title="The queryPermission() method of the FileSystemHandle interface queries the current permission state of the current handle.">FileSystemHandle/queryPermission</a></p>
-     <p class="less-than-two-engines-text">In only one current engine.</p>
-     <div class="support">
-      <span class="firefox no"><span>Firefox</span><span>None</span></span><span class="safari no"><span>Safari</span><span>None</span></span><span class="chrome yes"><span>Chrome</span><span>86+</span></span>
-      <hr>
-      <span class="opera no"><span>Opera</span><span>?</span></span><span class="edge_blink yes"><span>Edge</span><span>86+</span></span>
-      <hr>
-      <span class="edge no"><span>Edge (Legacy)</span><span>?</span></span><span class="ie no"><span>IE</span><span>None</span></span>
-      <hr>
-      <span class="firefox_android no"><span>Firefox for Android</span><span>?</span></span><span class="safari_ios no"><span>iOS Safari</span><span>?</span></span><span class="chrome_android no"><span>Chrome for Android</span><span>?</span></span><span class="webview_android no"><span>Android WebView</span><span>None</span></span><span class="samsunginternet_android no"><span>Samsung Internet</span><span>?</span></span><span class="opera_android no"><span>Opera Mobile</span><span>None</span></span>
-     </div>
-    </div>
-   </div>
-   <div class="note domintro" role="note">
-    <dl>
-     <dt data-md><var>status</var> = await <var>handle</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandle-querypermission" id="ref-for-dom-filesystemhandle-querypermission②">queryPermission</a></code>({ <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandlepermissiondescriptor-mode" id="ref-for-dom-filesystemhandlepermissiondescriptor-mode">mode</a></code> : <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-read" id="ref-for-dom-filesystempermissionmode-read②">"read"</a></code> })
-     <dt data-md><var>status</var> = await <var>handle</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandle-querypermission" id="ref-for-dom-filesystemhandle-querypermission③">queryPermission()</a></code>
-     <dt data-md><var>status</var> = (await navigator.<code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-navigator-permissions" id="ref-for-dom-navigator-permissions">permissions</a></code>.<code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissions-query" id="ref-for-dom-permissions-query">query</a></code>({ <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissiondescriptor-name" id="ref-for-dom-permissiondescriptor-name②">name</a></code> : "file-system", <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-handle" id="ref-for-dom-filesystempermissiondescriptor-handle⑥">handle</a></code> : <var>handle</var> })).<code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissionstatus-state" id="ref-for-dom-permissionstatus-state①">state</a></code>
-     <dd data-md>
-      <p>Queries the current state of the read permission of this handle. If this returns <code>"prompt"</code> the website will have to call <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandle-requestpermission" id="ref-for-dom-filesystemhandle-requestpermission①">requestPermission()</a></code> before any
- operations on the handle can be done. If this returns <code>"denied"</code> any operations will reject.</p>
-      <p>Usually handles returned by the <a data-link-type="dfn" href="#local-file-system-handle-factories" id="ref-for-local-file-system-handle-factories①">local file system handle factories</a> will initially return <code>"granted"</code> for
- their read permission state, however other than through the user revoking permission, a handle
- retrieved from IndexedDB is also likely to return <code>"prompt"</code>.</p>
-     <dt data-md><var>status</var> = await <var>handle</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandle-querypermission" id="ref-for-dom-filesystemhandle-querypermission④">queryPermission</a></code>({ <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandlepermissiondescriptor-mode" id="ref-for-dom-filesystemhandlepermissiondescriptor-mode①">mode</a></code> : <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-readwrite" id="ref-for-dom-filesystempermissionmode-readwrite②">"readwrite"</a></code> })
-     <dt data-md><var>status</var> = (await navigator.<code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-navigator-permissions" id="ref-for-dom-navigator-permissions①">permissions</a></code>.<code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissions-query" id="ref-for-dom-permissions-query①">query</a></code>({ <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissiondescriptor-name" id="ref-for-dom-permissiondescriptor-name③">name</a></code> : "file-system", <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-handle" id="ref-for-dom-filesystempermissiondescriptor-handle⑦">handle</a></code> : <var>handle</var>, <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-mode" id="ref-for-dom-filesystempermissiondescriptor-mode⑤">mode</a></code> : <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-readwrite" id="ref-for-dom-filesystempermissionmode-readwrite③">"readwrite"</a></code>}).<code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissionstatus-state" id="ref-for-dom-permissionstatus-state②">state</a></code>
-     <dd data-md>
-      <p>Queries the current state of the write permission of this handle. If this returns <code>"prompt"</code>,
- attempting to modify the file or directory this handle represents will require user activation
- and will result in a confirmation prompt being shown to the user. However if the state of the
- read permission of this handle is also <code>"prompt"</code> the website will need to call <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandle-requestpermission" id="ref-for-dom-filesystemhandle-requestpermission②">requestPermission()</a></code>. There is no automatic prompting for read access when
- attempting to read from a file or directory.</p>
-    </dl>
-   </div>
-   <p><strong class="advisement"> The integration with the permissions API’s <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissions-query" id="ref-for-dom-permissions-query②">query()</a></code> method is not yet implemented in Chrome.</strong></p>
-   <div class="algorithm" data-algorithm="queryPermission(descriptor)" data-algorithm-for="FileSystemHandle">
-     The <dfn class="dfn-paneled idl-code" data-dfn-for="FileSystemHandle" data-dfn-type="method" data-export data-lt="queryPermission(descriptor)|queryPermission()" id="dom-filesystemhandle-querypermission"><code>queryPermission(<var>descriptor</var>)</code></dfn> method, when invoked, must run these steps: 
-    <ol>
-     <li data-md>
-      <p>Let <var>result</var> be <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-new-promise" id="ref-for-a-new-promise②">a new promise</a>.</p>
-     <li data-md>
-      <p>Run the following steps <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel" id="ref-for-in-parallel②">in parallel</a>:</p>
-      <ol>
-       <li data-md>
-        <p>Let <var>state</var> be the result of <a data-link-type="dfn" href="#querying-file-system-permission" id="ref-for-querying-file-system-permission">querying file system permission</a> given <b><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this②">this</a></b> and <var>descriptor</var>.<code class="idl"><a data-link-type="idl" href="#dom-filesystemhandlepermissiondescriptor-mode" id="ref-for-dom-filesystemhandlepermissiondescriptor-mode②">mode</a></code>.</p>
-       <li data-md>
-        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve⑤">Resolve</a> <var>result</var> with <var>state</var>.</p>
-      </ol>
-     <li data-md>
-      <p>Return <var>result</var>.</p>
-    </ol>
-   </div>
-   <h4 class="heading settled" data-level="2.3.3" id="api-filesystemhandle-requestpermission"><span class="secno">2.3.3. </span><span class="content">The <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandle-requestpermission" id="ref-for-dom-filesystemhandle-requestpermission③">requestPermission()</a></code> method</span><a class="self-link" href="#api-filesystemhandle-requestpermission"></a></h4>
-   <div class="mdn-anno wrapped after">
-    <button class="mdn-anno-btn"><b class="less-than-two-engines-flag" title="This feature is in less than two current engines.">⚠</b><span>MDN</span></button>
-    <div class="feature">
-     <p><a href="https://developer.mozilla.org/en-US/docs/Web/API/FileSystemHandle/requestPermission" title="The requestPermission() method of the FileSystemHandle interface requests read or readwrite permissions for the file handle.">FileSystemHandle/requestPermission</a></p>
-     <p class="less-than-two-engines-text">In only one current engine.</p>
-     <div class="support">
-      <span class="firefox no"><span>Firefox</span><span>None</span></span><span class="safari no"><span>Safari</span><span>None</span></span><span class="chrome yes"><span>Chrome</span><span>86+</span></span>
-      <hr>
-      <span class="opera no"><span>Opera</span><span>?</span></span><span class="edge_blink yes"><span>Edge</span><span>86+</span></span>
-      <hr>
-      <span class="edge no"><span>Edge (Legacy)</span><span>?</span></span><span class="ie no"><span>IE</span><span>None</span></span>
-      <hr>
-      <span class="firefox_android no"><span>Firefox for Android</span><span>?</span></span><span class="safari_ios no"><span>iOS Safari</span><span>?</span></span><span class="chrome_android no"><span>Chrome for Android</span><span>?</span></span><span class="webview_android no"><span>Android WebView</span><span>None</span></span><span class="samsunginternet_android no"><span>Samsung Internet</span><span>?</span></span><span class="opera_android no"><span>Opera Mobile</span><span>None</span></span>
-     </div>
-    </div>
-   </div>
-   <div class="note domintro" role="note">
-    <dl>
-     <dt data-md><var>status</var> = await <var>handle</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandle-requestpermission" id="ref-for-dom-filesystemhandle-requestpermission④">requestPermission</a></code>({ <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandlepermissiondescriptor-mode" id="ref-for-dom-filesystemhandlepermissiondescriptor-mode③">mode</a></code> : <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-read" id="ref-for-dom-filesystempermissionmode-read③">"read"</a></code> })
-     <dt data-md><var>status</var> = await <var>handle</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandle-requestpermission" id="ref-for-dom-filesystemhandle-requestpermission⑤">requestPermission()</a></code>
-     <dd data-md>
-      <p>If the state of the read permission of this handle is anything other than <code>"prompt"</code>, this
- will return that state directly. If it is <code>"prompt"</code> however, user activation is needed and
- this will show a confirmation prompt to the user. The new read permission state is then
- returned, depending on the user’s response to the prompt.</p>
-     <dt data-md><var>status</var> = await <var>handle</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandle-requestpermission" id="ref-for-dom-filesystemhandle-requestpermission⑥">requestPermission</a></code>({ <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandlepermissiondescriptor-mode" id="ref-for-dom-filesystemhandlepermissiondescriptor-mode④">mode</a></code> : <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-readwrite" id="ref-for-dom-filesystempermissionmode-readwrite④">"readwrite"</a></code> })
-     <dd data-md>
-      <p>If the state of the write permission of this handle is anything other than <code>"prompt"</code>, this
- will return that state directly. If the status of the read permission of this handle is <code>"denied"</code> this will return that.</p>
-      <p>Otherwise the state of the write permission is <code>"prompt"</code> and this will show a confirmation
- prompt to the user. The new write permission state is then returned, depending on what the user
- selected.</p>
-    </dl>
-   </div>
-   <div class="algorithm" data-algorithm="requestPermission(descriptor)" data-algorithm-for="FileSystemHandle">
-     The <dfn class="dfn-paneled idl-code" data-dfn-for="FileSystemHandle" data-dfn-type="method" data-export data-lt="requestPermission(descriptor)|requestPermission()" id="dom-filesystemhandle-requestpermission"><code>requestPermission(<var>descriptor</var>)</code></dfn> method, when invoked, must run these steps: 
-    <ol>
-     <li data-md>
-      <p>Let <var>result</var> be <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-new-promise" id="ref-for-a-new-promise③">a new promise</a>.</p>
-     <li data-md>
-      <p>Run the following steps <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel" id="ref-for-in-parallel③">in parallel</a>:</p>
-      <ol>
-       <li data-md>
-        <p>Let <var>state</var> be the result of <a data-link-type="dfn" href="#requesting-file-system-permission" id="ref-for-requesting-file-system-permission">requesting file system permission</a> given <b><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this③">this</a></b> and <var>descriptor</var>.<code class="idl"><a data-link-type="idl" href="#dom-filesystemhandlepermissiondescriptor-mode" id="ref-for-dom-filesystemhandlepermissiondescriptor-mode⑤">mode</a></code>.
- If that throws an exception, <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject">reject</a> <var>result</var> with that exception and abort.</p>
-       <li data-md>
-        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve⑥">Resolve</a> <var>result</var> with <var>state</var>.</p>
-      </ol>
-     <li data-md>
-      <p>Return <var>result</var>.</p>
-    </ol>
-   </div>
-   <h3 class="heading settled" data-level="2.4" id="api-filesystemfilehandle"><span class="secno">2.4. </span><span class="content">The <code class="idl"><a data-link-type="idl" href="#filesystemfilehandle" id="ref-for-filesystemfilehandle①">FileSystemFileHandle</a></code> interface</span><a class="self-link" href="#api-filesystemfilehandle"></a></h3>
-<pre class="idl highlight def"><c- b>dictionary</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="dictionary" data-export id="dictdef-filesystemcreatewritableoptions"><code><c- g>FileSystemCreateWritableOptions</c-></code></dfn> {
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-boolean" id="ref-for-idl-boolean①"><c- b>boolean</c-></a> <dfn class="dfn-paneled idl-code" data-default="false" data-dfn-for="FileSystemCreateWritableOptions" data-dfn-type="dict-member" data-export data-type="boolean " id="dom-filesystemcreatewritableoptions-keepexistingdata"><code><c- g>keepExistingData</c-></code></dfn> = <c- b>false</c->;
-};
-
-[<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#Exposed" id="ref-for-Exposed①"><c- g>Exposed</c-></a>=(<c- n>Window</c->,<c- n>Worker</c->), <a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#SecureContext" id="ref-for-SecureContext①"><c- g>SecureContext</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/structured-data.html#serializable" id="ref-for-serializable①"><c- g>Serializable</c-></a>]
-<c- b>interface</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="interface" data-export id="filesystemfilehandle"><code><c- g>FileSystemFileHandle</c-></code></dfn> : <a data-link-type="idl-name" href="#filesystemhandle" id="ref-for-filesystemhandle⑨"><c- n>FileSystemHandle</c-></a> {
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise③"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="https://w3c.github.io/FileAPI/#dfn-file" id="ref-for-dfn-file"><c- n>File</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-filesystemfilehandle-getfile" id="ref-for-dom-filesystemfilehandle-getfile"><c- g>getFile</c-></a>();
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise④"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="#filesystemwritablefilestream" id="ref-for-filesystemwritablefilestream"><c- n>FileSystemWritableFileStream</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-filesystemfilehandle-createwritable" id="ref-for-dom-filesystemfilehandle-createwritable"><c- g>createWritable</c-></a>(<c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-filesystemcreatewritableoptions" id="ref-for-dictdef-filesystemcreatewritableoptions"><c- n>FileSystemCreateWritableOptions</c-></a> <dfn class="idl-code" data-dfn-for="FileSystemFileHandle/createWritable(options), FileSystemFileHandle/createWritable()" data-dfn-type="argument" data-export id="dom-filesystemfilehandle-createwritable-options-options"><code><c- g>options</c-></code><a class="self-link" href="#dom-filesystemfilehandle-createwritable-options-options"></a></dfn> = {});
-};
-</pre>
-   <p>A <code class="idl"><a data-link-type="idl" href="#filesystemfilehandle" id="ref-for-filesystemfilehandle②">FileSystemFileHandle</a></code>'s associated <a data-link-type="dfn" href="#filesystemhandle-entry" id="ref-for-filesystemhandle-entry⑧">entry</a> must be a <a data-link-type="dfn" href="#file" id="ref-for-file③">file entry</a>.</p>
-   <p><code class="idl"><a data-link-type="idl" href="#filesystemfilehandle" id="ref-for-filesystemfilehandle③">FileSystemFileHandle</a></code> objects are <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/structured-data.html#serializable-objects" id="ref-for-serializable-objects①">serializable objects</a>. Their <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/structured-data.html#serialization-steps" id="ref-for-serialization-steps①">serialization steps</a> and <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/structured-data.html#deserialization-steps" id="ref-for-deserialization-steps①">deserialization steps</a> are the same as those for <code class="idl"><a data-link-type="idl" href="#filesystemhandle" id="ref-for-filesystemhandle①⓪">FileSystemHandle</a></code>.</p>
-   <p><strong class="advisement"> In the Origin Trial as available in Chrome 78, these objects are not yet serializable.
-In Chrome 82 they are.</strong></p>
-   <h4 class="heading settled" data-level="2.4.1" id="api-filesystemfilehandle-getfile"><span class="secno">2.4.1. </span><span class="content">The <code class="idl"><a data-link-type="idl" href="#dom-filesystemfilehandle-getfile" id="ref-for-dom-filesystemfilehandle-getfile①">getFile()</a></code> method</span><a class="self-link" href="#api-filesystemfilehandle-getfile"></a></h4>
-   <div class="note domintro" role="note">
-    <dl>
-     <dt data-md><var>file</var> = await <var>fileHandle</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemfilehandle-getfile" id="ref-for-dom-filesystemfilehandle-getfile②">getFile()</a></code>
-     <dd data-md>
-      <p>Returns a <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/FileAPI/#dfn-file" id="ref-for-dfn-file①">File</a></code> representing the state on disk of the entry represented by <var>handle</var>.
- If the file on disk changes or is removed after this method is called, the returned <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/FileAPI/#dfn-file" id="ref-for-dfn-file②">File</a></code> object will likely be no longer readable.</p>
-    </dl>
-   </div>
-   <div class="algorithm" data-algorithm="getFile()" data-algorithm-for="FileSystemFileHandle">
-     The <dfn class="dfn-paneled idl-code" data-dfn-for="FileSystemFileHandle" data-dfn-type="method" data-export id="dom-filesystemfilehandle-getfile"><code>getFile()</code></dfn> method, when invoked, must run these steps: 
-    <ol>
-     <li data-md>
-      <p>Let <var>result</var> be <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-new-promise" id="ref-for-a-new-promise④">a new promise</a>.</p>
-     <li data-md>
-      <p>Run the following steps <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel" id="ref-for-in-parallel④">in parallel</a>:</p>
-      <ol>
-       <li data-md>
-        <p>Let <var>permissionStatus</var> be the result of <a data-link-type="dfn" href="#querying-file-system-permission" id="ref-for-querying-file-system-permission①">querying file system permission</a> given <b><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this④">this</a></b> and <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-read" id="ref-for-dom-filesystempermissionmode-read④">"read"</a></code>.</p>
-       <li data-md>
-        <p>If <var>permissionStatus</var> is not <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissionstate-granted" id="ref-for-dom-permissionstate-granted②">"granted"</a></code>,
- reject <var>result</var> with a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#notallowederror" id="ref-for-notallowederror">NotAllowedError</a></code> and abort.</p>
-       <li data-md>
-        <p>Let <var>entry</var> be <b><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this⑤">this</a></b>’s <a data-link-type="dfn" href="#filesystemhandle-entry" id="ref-for-filesystemhandle-entry⑨">entry</a>.</p>
-       <li data-md>
-        <p>Let <var>f</var> be a new <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/FileAPI/#dfn-file" id="ref-for-dfn-file③">File</a></code>.</p>
-       <li data-md>
-        <p>Set <var>f</var>’s <a data-link-type="dfn" href="https://w3c.github.io/FileAPI/#snapshot-state" id="ref-for-snapshot-state">snapshot state</a> to the current state of <var>entry</var>.</p>
-       <li data-md>
-        <p>Set <var>f</var>’s underlying byte sequence to a copy of <var>entry</var>’s <a data-link-type="dfn" href="#file-entry-binary-data" id="ref-for-file-entry-binary-data①">binary data</a>.</p>
-       <li data-md>
-        <p>Initialize the value of <var>f</var>’s <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/FileAPI/#dfn-name" id="ref-for-dfn-name">name</a></code> attribute to <var>entry</var>’s <a data-link-type="dfn" href="#entry-name" id="ref-for-entry-name③">name</a>.</p>
-       <li data-md>
-        <p>Initialize the value of <var>f</var>’s <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/FileAPI/#dfn-lastModified" id="ref-for-dfn-lastModified">lastModified</a></code> attribute to <var>entry</var>’s <a data-link-type="dfn" href="#file-entry-modification-timestamp" id="ref-for-file-entry-modification-timestamp①">modification timestamp</a>.</p>
-       <li data-md>
-        <p>Initialize the value of <var>f</var>’s <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/FileAPI/#dfn-type" id="ref-for-dfn-type">type</a></code> attribute to an implementation defined value, based on for example <var>entry</var>’s <a data-link-type="dfn" href="#entry-name" id="ref-for-entry-name④">name</a> and/or its file extension.</p>
-        <p class="issue" id="issue-1fb8bcae"><a class="self-link" href="#issue-1fb8bcae"></a> The reading and snapshotting behavior needs to be better specified in the <a data-link-type="biblio" href="#biblio-file-api">[FILE-API]</a> spec,
- for now this is kind of hand-wavy.</p>
-       <li data-md>
-        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve⑦">Resolve</a> <var>result</var> with <var>f</var>.</p>
-      </ol>
-     <li data-md>
-      <p>Return <var>result</var>.</p>
-    </ol>
-   </div>
-   <h4 class="heading settled" data-level="2.4.2" id="api-filesystemfilehandle-createwritable"><span class="secno">2.4.2. </span><span class="content">The <code class="idl"><a data-link-type="idl" href="#dom-filesystemfilehandle-createwritable" id="ref-for-dom-filesystemfilehandle-createwritable①">createWritable()</a></code> method</span><a class="self-link" href="#api-filesystemfilehandle-createwritable"></a></h4>
-   <p><strong class="advisement"> In the Origin Trial as available in Chrome 82, createWritable replaces the createWriter method.</strong></p>
-   <div class="note domintro" role="note">
-    <dl>
-     <dt data-md><var>stream</var> = await <var>fileHandle</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemfilehandle-createwritable" id="ref-for-dom-filesystemfilehandle-createwritable②">createWritable()</a></code>
-     <dt data-md><var>stream</var> = await <var>fileHandle</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemfilehandle-createwritable" id="ref-for-dom-filesystemfilehandle-createwritable③">createWritable</a></code>({ <code class="idl"><a data-link-type="idl" href="#dom-filesystemcreatewritableoptions-keepexistingdata" id="ref-for-dom-filesystemcreatewritableoptions-keepexistingdata">keepExistingData</a></code>: true/false })
-     <dd data-md>
-      <p>Returns a <code class="idl"><a data-link-type="idl" href="#filesystemwritablefilestream" id="ref-for-filesystemwritablefilestream①">FileSystemWritableFileStream</a></code> that can be used to write to the file. Any changes made through <var>stream</var> won’t be reflected in the file represented by <var>fileHandle</var> until the stream has been closed.
- User agents try to ensure that no partial writes happen, i.e. the file represented by <var>fileHandle</var> will either contain its old contents or it will contain whatever data was written
- through <var>stream</var> up until the stream has been closed.</p>
-      <p>This is typically implemented by writing data to a temporary file, and only replacing the file
- represented by <var>fileHandle</var> with the temporary file when the writable filestream is closed.</p>
-      <p>If <code class="idl"><a data-link-type="idl" href="#dom-filesystemcreatewritableoptions-keepexistingdata" id="ref-for-dom-filesystemcreatewritableoptions-keepexistingdata①">keepExistingData</a></code> is <code>false</code> or not specified,
- the temporary file starts out empty,
- otherwise the existing file is first copied to this temporary file.</p>
-    </dl>
-   </div>
-   <p class="issue" id="issue-0693bc11"><a class="self-link" href="#issue-0693bc11"></a> There has been some discussion around and desire for a "inPlace" mode for createWritable
-(where changes will be written to the actual underlying file as they are written to the writer, for
-example to support in-place modification of large files or things like databases). This is not
-currently implemented in Chrome. Implementing this is currently blocked on figuring out how to
-combine the desire to run malware checks with the desire to let websites make fast in-place
-modifications to existing large files. <a href="https://github.com/wicg/file-system-access/issues/67">[Issue #67]</a></p>
-   <div class="algorithm" data-algorithm="createWritable(options)" data-algorithm-for="FileSystemFileHandle">
-     The <dfn class="dfn-paneled idl-code" data-dfn-for="FileSystemFileHandle" data-dfn-type="method" data-export data-lt="createWritable(options)|createWritable()" id="dom-filesystemfilehandle-createwritable"><code>createWritable(<var>options</var>)</code></dfn> method, when invoked, must run these steps: 
-    <ol>
-     <li data-md>
-      <p>Let <var>result</var> be <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-new-promise" id="ref-for-a-new-promise⑤">a new promise</a>.</p>
-     <li data-md>
-      <p>Run the following steps <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel" id="ref-for-in-parallel⑤">in parallel</a>:</p>
-      <ol>
-       <li data-md>
-        <p>Let <var>permissionStatus</var> be the result of <a data-link-type="dfn" href="#requesting-file-system-permission" id="ref-for-requesting-file-system-permission①">requesting file system permission</a> given <b><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this⑥">this</a></b> and <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-readwrite" id="ref-for-dom-filesystempermissionmode-readwrite⑤">"readwrite"</a></code>.
- If that throws an exception, <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject①">reject</a> <var>result</var> with that exception and abort.</p>
-       <li data-md>
-        <p>If <var>permissionStatus</var> is not <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissionstate-granted" id="ref-for-dom-permissionstate-granted③">"granted"</a></code>,
- reject <var>result</var> with a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#notallowederror" id="ref-for-notallowederror①">NotAllowedError</a></code> and abort.</p>
-       <li data-md>
-        <p>Let <var>entry</var> be <b><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this⑦">this</a></b>’s <a data-link-type="dfn" href="#filesystemhandle-entry" id="ref-for-filesystemhandle-entry①⓪">entry</a>.</p>
-       <li data-md>
-        <p>Let <var>stream</var> be the result of <a data-link-type="dfn" href="#create-a-new-filesystemwritablefilestream" id="ref-for-create-a-new-filesystemwritablefilestream">creating a new FileSystemWritableFileStream</a> for <var>entry</var> in <b><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this⑧">this</a></b>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-realm" id="ref-for-concept-relevant-realm①">relevant realm</a>.</p>
-       <li data-md>
-        <p>If <var>options</var>.<code class="idl"><a data-link-type="idl" href="#dom-filesystemcreatewritableoptions-keepexistingdata" id="ref-for-dom-filesystemcreatewritableoptions-keepexistingdata②">keepExistingData</a></code> is <code>true</code>:</p>
-        <ol>
-         <li data-md>
-          <p>Set <var>stream</var>.<a data-link-type="dfn" href="#filesystemwritablefilestream-buffer" id="ref-for-filesystemwritablefilestream-buffer">[[buffer]]</a> to a copy of <var>entry</var>’s <a data-link-type="dfn" href="#file-entry-binary-data" id="ref-for-file-entry-binary-data②">binary data</a>.</p>
-        </ol>
-       <li data-md>
-        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve⑧">Resolve</a> <var>result</var> with <var>stream</var>.</p>
-      </ol>
-     <li data-md>
-      <p>Return <var>result</var>.</p>
-    </ol>
-   </div>
-   <h3 class="heading settled" data-level="2.5" id="api-filesystemdirectoryhandle"><span class="secno">2.5. </span><span class="content">The <code class="idl"><a data-link-type="idl" href="#filesystemdirectoryhandle" id="ref-for-filesystemdirectoryhandle①">FileSystemDirectoryHandle</a></code> interface</span><a class="self-link" href="#api-filesystemdirectoryhandle"></a></h3>
-<pre class="idl highlight def"><c- b>dictionary</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="dictionary" data-export id="dictdef-filesystemgetfileoptions"><code><c- g>FileSystemGetFileOptions</c-></code></dfn> {
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-boolean" id="ref-for-idl-boolean②"><c- b>boolean</c-></a> <dfn class="dfn-paneled idl-code" data-default="false" data-dfn-for="FileSystemGetFileOptions" data-dfn-type="dict-member" data-export data-type="boolean " id="dom-filesystemgetfileoptions-create"><code><c- g>create</c-></code></dfn> = <c- b>false</c->;
-};
-
-<c- b>dictionary</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="dictionary" data-export id="dictdef-filesystemgetdirectoryoptions"><code><c- g>FileSystemGetDirectoryOptions</c-></code></dfn> {
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-boolean" id="ref-for-idl-boolean③"><c- b>boolean</c-></a> <dfn class="dfn-paneled idl-code" data-default="false" data-dfn-for="FileSystemGetDirectoryOptions" data-dfn-type="dict-member" data-export data-type="boolean " id="dom-filesystemgetdirectoryoptions-create"><code><c- g>create</c-></code></dfn> = <c- b>false</c->;
-};
-
-<c- b>dictionary</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="dictionary" data-export id="dictdef-filesystemremoveoptions"><code><c- g>FileSystemRemoveOptions</c-></code></dfn> {
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-boolean" id="ref-for-idl-boolean④"><c- b>boolean</c-></a> <dfn class="dfn-paneled idl-code" data-default="false" data-dfn-for="FileSystemRemoveOptions" data-dfn-type="dict-member" data-export data-type="boolean " id="dom-filesystemremoveoptions-recursive"><code><c- g>recursive</c-></code></dfn> = <c- b>false</c->;
-};
-
-[<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#Exposed" id="ref-for-Exposed②"><c- g>Exposed</c-></a>=(<c- n>Window</c->,<c- n>Worker</c->), <a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#SecureContext" id="ref-for-SecureContext②"><c- g>SecureContext</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/structured-data.html#serializable" id="ref-for-serializable②"><c- g>Serializable</c-></a>]
-<c- b>interface</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="interface" data-export id="filesystemdirectoryhandle"><code><c- g>FileSystemDirectoryHandle</c-></code></dfn> : <a data-link-type="idl-name" href="#filesystemhandle" id="ref-for-filesystemhandle①①"><c- n>FileSystemHandle</c-></a> {
-  <c- b>async</c-> <c- b>iterable</c->&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString" id="ref-for-idl-USVString①"><c- b>USVString</c-></a>, <a data-link-type="idl-name" href="#filesystemhandle" id="ref-for-filesystemhandle①②"><c- n>FileSystemHandle</c-></a>>;
-
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise⑤"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="#filesystemfilehandle" id="ref-for-filesystemfilehandle④"><c- n>FileSystemFileHandle</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-filesystemdirectoryhandle-getfilehandle" id="ref-for-dom-filesystemdirectoryhandle-getfilehandle"><c- g>getFileHandle</c-></a>(<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString" id="ref-for-idl-USVString②"><c- b>USVString</c-></a> <dfn class="idl-code" data-dfn-for="FileSystemDirectoryHandle/getFileHandle(name, options), FileSystemDirectoryHandle/getFileHandle(name)" data-dfn-type="argument" data-export id="dom-filesystemdirectoryhandle-getfilehandle-name-options-name"><code><c- g>name</c-></code><a class="self-link" href="#dom-filesystemdirectoryhandle-getfilehandle-name-options-name"></a></dfn>, <c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-filesystemgetfileoptions" id="ref-for-dictdef-filesystemgetfileoptions"><c- n>FileSystemGetFileOptions</c-></a> <dfn class="idl-code" data-dfn-for="FileSystemDirectoryHandle/getFileHandle(name, options), FileSystemDirectoryHandle/getFileHandle(name)" data-dfn-type="argument" data-export id="dom-filesystemdirectoryhandle-getfilehandle-name-options-options"><code><c- g>options</c-></code><a class="self-link" href="#dom-filesystemdirectoryhandle-getfilehandle-name-options-options"></a></dfn> = {});
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise⑥"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="#filesystemdirectoryhandle" id="ref-for-filesystemdirectoryhandle②"><c- n>FileSystemDirectoryHandle</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-filesystemdirectoryhandle-getdirectoryhandle" id="ref-for-dom-filesystemdirectoryhandle-getdirectoryhandle"><c- g>getDirectoryHandle</c-></a>(<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString" id="ref-for-idl-USVString③"><c- b>USVString</c-></a> <dfn class="idl-code" data-dfn-for="FileSystemDirectoryHandle/getDirectoryHandle(name, options), FileSystemDirectoryHandle/getDirectoryHandle(name)" data-dfn-type="argument" data-export id="dom-filesystemdirectoryhandle-getdirectoryhandle-name-options-name"><code><c- g>name</c-></code><a class="self-link" href="#dom-filesystemdirectoryhandle-getdirectoryhandle-name-options-name"></a></dfn>, <c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-filesystemgetdirectoryoptions" id="ref-for-dictdef-filesystemgetdirectoryoptions"><c- n>FileSystemGetDirectoryOptions</c-></a> <dfn class="idl-code" data-dfn-for="FileSystemDirectoryHandle/getDirectoryHandle(name, options), FileSystemDirectoryHandle/getDirectoryHandle(name)" data-dfn-type="argument" data-export id="dom-filesystemdirectoryhandle-getdirectoryhandle-name-options-options"><code><c- g>options</c-></code><a class="self-link" href="#dom-filesystemdirectoryhandle-getdirectoryhandle-name-options-options"></a></dfn> = {});
-
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise⑦"><c- b>Promise</c-></a>&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-undefined" id="ref-for-idl-undefined"><c- b>undefined</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-filesystemdirectoryhandle-removeentry" id="ref-for-dom-filesystemdirectoryhandle-removeentry"><c- g>removeEntry</c-></a>(<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString" id="ref-for-idl-USVString④"><c- b>USVString</c-></a> <dfn class="idl-code" data-dfn-for="FileSystemDirectoryHandle/removeEntry(name, options), FileSystemDirectoryHandle/removeEntry(name)" data-dfn-type="argument" data-export id="dom-filesystemdirectoryhandle-removeentry-name-options-name"><code><c- g>name</c-></code><a class="self-link" href="#dom-filesystemdirectoryhandle-removeentry-name-options-name"></a></dfn>, <c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-filesystemremoveoptions" id="ref-for-dictdef-filesystemremoveoptions"><c- n>FileSystemRemoveOptions</c-></a> <dfn class="idl-code" data-dfn-for="FileSystemDirectoryHandle/removeEntry(name, options), FileSystemDirectoryHandle/removeEntry(name)" data-dfn-type="argument" data-export id="dom-filesystemdirectoryhandle-removeentry-name-options-options"><code><c- g>options</c-></code><a class="self-link" href="#dom-filesystemdirectoryhandle-removeentry-name-options-options"></a></dfn> = {});
-
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise⑧"><c- b>Promise</c-></a>&lt;<a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#idl-sequence" id="ref-for-idl-sequence"><c- b>sequence</c-></a>&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString" id="ref-for-idl-USVString⑤"><c- b>USVString</c-></a>>?> <a class="idl-code" data-link-type="method" href="#dom-filesystemdirectoryhandle-resolve" id="ref-for-dom-filesystemdirectoryhandle-resolve"><c- g>resolve</c-></a>(<a data-link-type="idl-name" href="#filesystemhandle" id="ref-for-filesystemhandle①③"><c- n>FileSystemHandle</c-></a> <dfn class="idl-code" data-dfn-for="FileSystemDirectoryHandle/resolve(possibleDescendant)" data-dfn-type="argument" data-export id="dom-filesystemdirectoryhandle-resolve-possibledescendant-possibledescendant"><code><c- g>possibleDescendant</c-></code><a class="self-link" href="#dom-filesystemdirectoryhandle-resolve-possibledescendant-possibledescendant"></a></dfn>);
-};
-</pre>
-   <p>A <code class="idl"><a data-link-type="idl" href="#filesystemdirectoryhandle" id="ref-for-filesystemdirectoryhandle③">FileSystemDirectoryHandle</a></code>'s associated <a data-link-type="dfn" href="#filesystemhandle-entry" id="ref-for-filesystemhandle-entry①①">entry</a> must be a <a data-link-type="dfn" href="#directory" id="ref-for-directory④">directory entry</a>.</p>
-   <p><code class="idl"><a data-link-type="idl" href="#filesystemdirectoryhandle" id="ref-for-filesystemdirectoryhandle④">FileSystemDirectoryHandle</a></code> objects are <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/structured-data.html#serializable-objects" id="ref-for-serializable-objects②">serializable objects</a>. Their <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/structured-data.html#serialization-steps" id="ref-for-serialization-steps②">serialization steps</a> and <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/structured-data.html#deserialization-steps" id="ref-for-deserialization-steps②">deserialization steps</a> are the same as those for <code class="idl"><a data-link-type="idl" href="#filesystemhandle" id="ref-for-filesystemhandle①④">FileSystemHandle</a></code>.</p>
-   <p><strong class="advisement"> In the Origin Trial as available in Chrome 78, these objects are not yet serializable.
-In Chrome 82 they are.</strong></p>
-   <p><strong class="advisement"> In Chrome versions upto Chrome 85 <code>getFileHandle</code> and <code>getDirectoryHandle</code> where
-called <code>getFile</code> and <code>getDirectory</code> instead.</strong></p>
-   <h4 class="heading settled" data-level="2.5.1" id="api-filesystemdirectoryhandle-asynciterable"><span class="secno">2.5.1. </span><span class="content">Directory iteration</span><a class="self-link" href="#api-filesystemdirectoryhandle-asynciterable"></a></h4>
-   <div class="note domintro" role="note">
-    <dl>
-     <dt data-md>for await (let [<var>name</var>, <var>handle</var>] of <var>directoryHandle</var>) {}
-     <dt data-md>for await (let [<var>name</var>, <var>handle</var>] of <var>directoryHandle</var> . entries()) {}
-     <dt data-md>for await (let <var>handle</var> of <var>directoryHandle</var> . values()) {}
-     <dt data-md>for await (let <var>name</var> of <var>directoryHandle</var> . keys()) {}
-     <dd data-md>
-      <p>Iterates over all entries whose parent is the entry represented by <var>directoryHandle</var>. Entries
- that are created or deleted while the iteration is in progress might or might not be included.
- No guarantees are given either way.</p>
-    </dl>
-   </div>
-   <p><strong class="advisement"> In Chrome this is currently implemented as a <code>directoryHandle.getEntries()</code> method that can be used in a <code>for await..of</code> loop.
-This <code>getEntries()</code> method returns more or less the same async iterable as what is returned by <code>values()</code> in this specification.
-The proper async iterable declaration is not yet implemented.</strong></p>
-   <p class="issue" id="issue-cce0bb28"><a class="self-link" href="#issue-cce0bb28"></a> In the future we might want to add arguments to the async iterable declaration to
-support for example recursive iteration. <a href="https://github.com/wicg/file-system-access/issues/173">[Issue #173]</a></p>
-   <div class="algorithm" data-algorithm="iterator initialization">
-     The <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#asynchronous-iterator-initialization-steps" id="ref-for-asynchronous-iterator-initialization-steps">asynchronous iterator initialization steps</a> for a <code class="idl"><a data-link-type="idl" href="#filesystemdirectoryhandle" id="ref-for-filesystemdirectoryhandle⑤">FileSystemDirectoryHandle</a></code> <var>handle</var> ant its async iterator <var>iterator</var> are: 
-    <ol>
-     <li data-md>
-      <p>Let <var>permissionStatus</var> be the result of <a data-link-type="dfn" href="#querying-file-system-permission" id="ref-for-querying-file-system-permission②">querying file system permission</a> given <var>handle</var> and <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-read" id="ref-for-dom-filesystempermissionmode-read⑤">"read"</a></code>.</p>
-     <li data-md>
-      <p>If <var>permissionStatus</var> is not <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissionstate-granted" id="ref-for-dom-permissionstate-granted④">"granted"</a></code>,
- throw a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#notallowederror" id="ref-for-notallowederror②">NotAllowedError</a></code>.</p>
-     <li data-md>
-      <p>Set <var>iterator</var>’s <dfn class="dfn-paneled" data-dfn-for="FileSystemDirectoryHandle-iterator" data-dfn-type="dfn" data-noexport id="filesystemdirectoryhandle-iterator-past-results">past results</dfn> to an empty <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#ordered-set" id="ref-for-ordered-set①">set</a>.</p>
-    </ol>
-   </div>
-   <div class="algorithm" data-algorithm="next iteration result">
-     To <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#dfn-get-the-next-iteration-result" id="ref-for-dfn-get-the-next-iteration-result">get the next iteration result</a> for a <code class="idl"><a data-link-type="idl" href="#filesystemdirectoryhandle" id="ref-for-filesystemdirectoryhandle⑥">FileSystemDirectoryHandle</a></code> <var>handle</var> and its async iterator <var>iterator</var>: 
-    <ol>
-     <li data-md>
-      <p>Let <var>promise</var> be <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-new-promise" id="ref-for-a-new-promise⑥">a new promise</a>.</p>
-     <li data-md>
-      <p>Let <var>directory</var> be <var>handle</var>’s <a data-link-type="dfn" href="#filesystemhandle-entry" id="ref-for-filesystemhandle-entry①②">entry</a>.</p>
-     <li data-md>
-      <p>Let <var>permissionStatus</var> be the result of <a data-link-type="dfn" href="#querying-file-system-permission" id="ref-for-querying-file-system-permission③">querying file system permission</a> given <var>handle</var> and <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-read" id="ref-for-dom-filesystempermissionmode-read⑥">"read"</a></code>.</p>
-     <li data-md>
-      <p>If <var>permissionStatus</var> is not <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissionstate-granted" id="ref-for-dom-permissionstate-granted⑤">"granted"</a></code>,
- reject <var>promise</var> with a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#notallowederror" id="ref-for-notallowederror③">NotAllowedError</a></code> and return <var>promise</var>.</p>
-     <li data-md>
-      <p>Let <var>child</var> be an <a data-link-type="dfn" href="#entry" id="ref-for-entry①③">entry</a> in <var>directory</var>’s <a data-link-type="dfn" href="#directory-entry-children" id="ref-for-directory-entry-children③">children</a>,
- such that <var>child</var>’s <a data-link-type="dfn" href="#entry-name" id="ref-for-entry-name⑤">name</a> is not contained in <var>iterator</var>’s <a data-link-type="dfn" href="#filesystemdirectoryhandle-iterator-past-results" id="ref-for-filesystemdirectoryhandle-iterator-past-results">past results</a>,
- or <code>null</code> if no such entry exists.</p>
-      <p class="note" role="note"><span>Note:</span> This is intentionally very vague about the iteration order. Different platforms
- and file systems provide different guarantees about iteration order, and we want it to
- be possible to efficiently implement this on all platforms. As such no guarantees are given
- about the exact order in which elements are returned.</p>
-     <li data-md>
-      <p>If <var>child</var> is <code>null</code>, then:</p>
-      <ol>
-       <li data-md>
-        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve⑨">Resolve</a> <var>promise</var> with <code>undefined</code>.</p>
-      </ol>
-     <li data-md>
-      <p>Otherwise:</p>
-      <ol>
-       <li data-md>
-        <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#set-append" id="ref-for-set-append">Append</a> <var>child</var>’s <a data-link-type="dfn" href="#entry-name" id="ref-for-entry-name⑥">name</a> to <var>iterator</var>’s <a data-link-type="dfn" href="#filesystemdirectoryhandle-iterator-past-results" id="ref-for-filesystemdirectoryhandle-iterator-past-results①">past results</a>.</p>
-       <li data-md>
-        <p>If <var>child</var> is a <a data-link-type="dfn" href="#file" id="ref-for-file④">file entry</a>:</p>
-        <ol>
-         <li data-md>
-          <p>Let <var>result</var> be a new <code class="idl"><a data-link-type="idl" href="#filesystemfilehandle" id="ref-for-filesystemfilehandle⑤">FileSystemFileHandle</a></code> associated with <var>child</var>.</p>
-        </ol>
-       <li data-md>
-        <p>Otherwise:</p>
-        <ol>
-         <li data-md>
-          <p>Let <var>result</var> be a new <code class="idl"><a data-link-type="idl" href="#filesystemdirectoryhandle" id="ref-for-filesystemdirectoryhandle⑦">FileSystemDirectoryHandle</a></code> associated with <var>child</var>.</p>
-        </ol>
-       <li data-md>
-        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve①⓪">Resolve</a> <var>promise</var> with (<var>child</var>’s <a data-link-type="dfn" href="#entry-name" id="ref-for-entry-name⑦">name</a>, <var>result</var>).</p>
-      </ol>
-     <li data-md>
-      <p>Return <var>promise</var>.</p>
-    </ol>
-   </div>
-   <h4 class="heading settled" data-level="2.5.2" id="api-filesystemdirectoryhandle-getfilehandle"><span class="secno">2.5.2. </span><span class="content">The <code class="idl"><a data-link-type="idl" href="#dom-filesystemdirectoryhandle-getfilehandle" id="ref-for-dom-filesystemdirectoryhandle-getfilehandle①">getFileHandle()</a></code> method</span><a class="self-link" href="#api-filesystemdirectoryhandle-getfilehandle"></a></h4>
-   <div class="note domintro" role="note">
-    <dl>
-     <dt data-md><var>fileHandle</var> = await <var>directoryHandle</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemdirectoryhandle-getfilehandle" id="ref-for-dom-filesystemdirectoryhandle-getfilehandle②">getFileHandle</a></code>(<var>name</var>)
-     <dt data-md><var>fileHandle</var> = await <var>directoryHandle</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemdirectoryhandle-getfilehandle" id="ref-for-dom-filesystemdirectoryhandle-getfilehandle③">getFileHandle</a></code>(<var>name</var>, { <code class="idl"><a data-link-type="idl" href="#dom-filesystemgetfileoptions-create" id="ref-for-dom-filesystemgetfileoptions-create">create</a></code>: false })
-     <dd data-md>
-      <p>Returns a handle for a file named <var>name</var> in the directory represented by <var>directoryHandle</var>. If
- no such file exists, this rejects.</p>
-     <dt data-md><var>fileHandle</var> = await <var>directoryHandle</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemdirectoryhandle-getfilehandle" id="ref-for-dom-filesystemdirectoryhandle-getfilehandle④">getFileHandle</a></code>(<var>name</var>, { <code class="idl"><a data-link-type="idl" href="#dom-filesystemgetfileoptions-create" id="ref-for-dom-filesystemgetfileoptions-create①">create</a></code>: true })
-     <dd data-md>
-      <p>Returns a handle for a file named <var>name</var> in the directory represented by <var>directoryHandle</var>. If
- no such file exists, this creates a new file. If no file with named <var>name</var> can be created this
- rejects. Creation can fail because there already is a directory with the same name, because the
- name uses characters that aren’t supported in file names on the underlying file system, or
- because the user agent for security reasons decided not to allow creation of the file.</p>
-      <p>This operation requires write permission, even if the file being returned already exists. If
- this handle doesn’t already have write permission, this could result in a prompt being shown to
- the user. To get an existing file without needing write permission, call this method
- with <code>{ <code class="idl"><a data-link-type="idl" href="#dom-filesystemgetfileoptions-create" id="ref-for-dom-filesystemgetfileoptions-create②">create</a></code>: false }</code>.</p>
-    </dl>
-   </div>
-   <div class="algorithm" data-algorithm="getFileHandle(name, options)" data-algorithm-for="FileSystemDirectoryHandle">
-     The <dfn class="dfn-paneled idl-code" data-dfn-for="FileSystemDirectoryHandle" data-dfn-type="method" data-export data-lt="getFileHandle(name, options)|getFileHandle(name)" id="dom-filesystemdirectoryhandle-getfilehandle"><code>getFileHandle(<var>name</var>, <var>options</var>)</code></dfn> method, when invoked,
-must run these steps: 
-    <ol>
-     <li data-md>
-      <p>Let <var>result</var> be <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-new-promise" id="ref-for-a-new-promise⑦">a new promise</a>.</p>
-     <li data-md>
-      <p>Run the following steps <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel" id="ref-for-in-parallel⑥">in parallel</a>:</p>
-      <ol>
-       <li data-md>
-        <p>If <var>name</var> is not a <a data-link-type="dfn" href="#valid-file-name" id="ref-for-valid-file-name①">valid file name</a>, <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject②">reject</a> <var>result</var> with a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#exceptiondef-typeerror" id="ref-for-exceptiondef-typeerror">TypeError</a></code> and abort.</p>
-       <li data-md>
-        <p>Let <var>entry</var> be <b><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this⑨">this</a></b>’s <a data-link-type="dfn" href="#filesystemhandle-entry" id="ref-for-filesystemhandle-entry①③">entry</a>.</p>
-       <li data-md>
-        <p>If <var>options</var>.<code class="idl"><a data-link-type="idl" href="#dom-filesystemgetfileoptions-create" id="ref-for-dom-filesystemgetfileoptions-create③">create</a></code> is <code>true</code>:</p>
-        <ol>
-         <li data-md>
-          <p>Let <var>permissionStatus</var> be the result of <a data-link-type="dfn" href="#requesting-file-system-permission" id="ref-for-requesting-file-system-permission②">requesting file system permission</a> given <b><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this①⓪">this</a></b> and <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-readwrite" id="ref-for-dom-filesystempermissionmode-readwrite⑥">"readwrite"</a></code>.
- If that throws an exception, <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject③">reject</a> <var>result</var> with that exception and abort.</p>
-        </ol>
-       <li data-md>
-        <p>Otherwise:</p>
-        <ol>
-         <li data-md>
-          <p>Let <var>permissionStatus</var> be the result of <a data-link-type="dfn" href="#querying-file-system-permission" id="ref-for-querying-file-system-permission④">querying file system permission</a> given <b><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this①①">this</a></b> and <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-read" id="ref-for-dom-filesystempermissionmode-read⑦">"read"</a></code>.</p>
-        </ol>
-       <li data-md>
-        <p>If <var>permissionStatus</var> is not <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissionstate-granted" id="ref-for-dom-permissionstate-granted⑥">"granted"</a></code>,
- reject <var>result</var> with a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#notallowederror" id="ref-for-notallowederror④">NotAllowedError</a></code> and abort.</p>
-       <li data-md>
-        <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-iterate" id="ref-for-list-iterate①">For each</a> <var>child</var> of <var>entry</var>’s <a data-link-type="dfn" href="#directory-entry-children" id="ref-for-directory-entry-children④">children</a>:</p>
-        <ol>
-         <li data-md>
-          <p>If <var>child</var>’s <a data-link-type="dfn" href="#entry-name" id="ref-for-entry-name⑧">name</a> equals <var>name</var>:</p>
-          <ol>
-           <li data-md>
-            <p>If <var>child</var> is a <a data-link-type="dfn" href="#directory" id="ref-for-directory⑤">directory entry</a>:</p>
-            <ol>
-             <li data-md>
-              <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject④">Reject</a> <var>result</var> with a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#typemismatcherror" id="ref-for-typemismatcherror">TypeMismatchError</a></code> and abort.</p>
-            </ol>
-           <li data-md>
-            <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve①①">Resolve</a> <var>result</var> with a new <code class="idl"><a data-link-type="idl" href="#filesystemfilehandle" id="ref-for-filesystemfilehandle⑥">FileSystemFileHandle</a></code> whose <a data-link-type="dfn" href="#filesystemhandle-entry" id="ref-for-filesystemhandle-entry①④">entry</a> is <var>child</var> and abort.</p>
-          </ol>
-        </ol>
-       <li data-md>
-        <p>If <var>options</var>.<code class="idl"><a data-link-type="idl" href="#dom-filesystemgetfileoptions-create" id="ref-for-dom-filesystemgetfileoptions-create④">create</a></code> is <code>false</code>:</p>
-        <ol>
-         <li data-md>
-          <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject⑤">Reject</a> <var>result</var> with a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#notfounderror" id="ref-for-notfounderror">NotFoundError</a></code> and abort.</p>
-        </ol>
-       <li data-md>
-        <p>Let <var>child</var> be a new <a data-link-type="dfn" href="#file" id="ref-for-file⑤">file entry</a>.</p>
-       <li data-md>
-        <p>Set <var>child</var>’s <a data-link-type="dfn" href="#entry-name" id="ref-for-entry-name⑨">name</a> to <var>name</var>.</p>
-       <li data-md>
-        <p>Set <var>child</var>’s <a data-link-type="dfn" href="#file-entry-binary-data" id="ref-for-file-entry-binary-data③">binary data</a> to an empty <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte-sequence" id="ref-for-byte-sequence①">byte sequence</a>.</p>
-       <li data-md>
-        <p>Set <var>child</var>’s <a data-link-type="dfn" href="#file-entry-modification-timestamp" id="ref-for-file-entry-modification-timestamp②">modification timestamp</a> to the current time.</p>
-       <li data-md>
-        <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#set-append" id="ref-for-set-append①">Append</a> <var>child</var> to <var>entry</var>’s <a data-link-type="dfn" href="#directory-entry-children" id="ref-for-directory-entry-children⑤">children</a>.</p>
-       <li data-md>
-        <p>If creating <var>child</var> in the underlying file system throws an exception, <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject⑥">reject</a> <var>result</var> with that exception and abort.</p>
-        <p class="issue" id="issue-721a33e4"><a class="self-link" href="#issue-721a33e4"></a> Better specify what possible exceptions this could throw. <a href="https://github.com/wicg/file-system-access/issues/68">[Issue #68]</a></p>
-       <li data-md>
-        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve①②">Resolve</a> <var>result</var> with a new <code class="idl"><a data-link-type="idl" href="#filesystemfilehandle" id="ref-for-filesystemfilehandle⑦">FileSystemFileHandle</a></code> whose <a data-link-type="dfn" href="#filesystemhandle-entry" id="ref-for-filesystemhandle-entry①⑤">entry</a> is <var>child</var>.</p>
-      </ol>
-     <li data-md>
-      <p>Return <var>result</var>.</p>
-    </ol>
-   </div>
-   <h4 class="heading settled" data-level="2.5.3" id="api-filesystemdirectoryhandle-getdirectoryhandle"><span class="secno">2.5.3. </span><span class="content">The <code class="idl"><a data-link-type="idl" href="#dom-filesystemdirectoryhandle-getdirectoryhandle" id="ref-for-dom-filesystemdirectoryhandle-getdirectoryhandle①">getDirectoryHandle()</a></code> method</span><a class="self-link" href="#api-filesystemdirectoryhandle-getdirectoryhandle"></a></h4>
-   <div class="note domintro" role="note">
-    <dl>
-     <dt data-md><var>subdirHandle</var> = await <var>directoryHandle</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemdirectoryhandle-getdirectoryhandle" id="ref-for-dom-filesystemdirectoryhandle-getdirectoryhandle②">getDirectoryHandle</a></code>(<var>name</var>)
-     <dt data-md><var>subdirHandle</var> = await <var>directoryHandle</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemdirectoryhandle-getdirectoryhandle" id="ref-for-dom-filesystemdirectoryhandle-getdirectoryhandle③">getDirectoryHandle</a></code>(<var>name</var>, { <code class="idl"><a data-link-type="idl" href="#dom-filesystemgetdirectoryoptions-create" id="ref-for-dom-filesystemgetdirectoryoptions-create">create</a></code>: false })
-     <dd data-md>
-      <p>Returns a handle for a directory named <var>name</var> in the directory represented by <var>directoryHandle</var>. If no such directory exists, this rejects.</p>
-     <dt data-md><var>subdirHandle</var> = await <var>directoryHandle</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemdirectoryhandle-getdirectoryhandle" id="ref-for-dom-filesystemdirectoryhandle-getdirectoryhandle④">getDirectoryHandle</a></code>(<var>name</var>, { <code class="idl"><a data-link-type="idl" href="#dom-filesystemgetdirectoryoptions-create" id="ref-for-dom-filesystemgetdirectoryoptions-create①">create</a></code>: true })
-     <dd data-md>
-      <p>Returns a handle for a directory named <var>name</var> in the directory represented by <var>directoryHandle</var>. If no such directory exists, this creates a new directory. If creating the
- directory failed, this rejects. Creation can fail because there already is a file with the same
- name, or because the name uses characters that aren’t supported in file names on the underlying
- file system.</p>
-      <p>This operation requires write permission, even if the directory being returned already exists.
- If this handle doesn’t already have write permission, this could result in a prompt being shown
- to the user. To get an existing directory without needing write permission, call this method
- with <code>{ <code class="idl"><a data-link-type="idl" href="#dom-filesystemgetdirectoryoptions-create" id="ref-for-dom-filesystemgetdirectoryoptions-create②">create</a></code>: false }</code>.</p>
-    </dl>
-   </div>
-   <div class="algorithm" data-algorithm="getDirectoryHandle(name, options)" data-algorithm-for="FileSystemDirectoryHandle">
-     The <dfn class="dfn-paneled idl-code" data-dfn-for="FileSystemDirectoryHandle" data-dfn-type="method" data-export data-lt="getDirectoryHandle(name, options)|getDirectoryHandle(name)" id="dom-filesystemdirectoryhandle-getdirectoryhandle"><code>getDirectoryHandle(<var>name</var>, <var>options</var>)</code></dfn> method, when
-invoked, must run these steps: 
-    <ol>
-     <li data-md>
-      <p>Let <var>result</var> be <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-new-promise" id="ref-for-a-new-promise⑧">a new promise</a>.</p>
-     <li data-md>
-      <p>Run the following steps <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel" id="ref-for-in-parallel⑦">in parallel</a>:</p>
-      <ol>
-       <li data-md>
-        <p>If <var>name</var> is not a <a data-link-type="dfn" href="#valid-file-name" id="ref-for-valid-file-name②">valid file name</a>, <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject⑦">reject</a> <var>result</var> with a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#exceptiondef-typeerror" id="ref-for-exceptiondef-typeerror①">TypeError</a></code> and abort.</p>
-       <li data-md>
-        <p>Let <var>entry</var> be <b><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this①②">this</a></b>’s <a data-link-type="dfn" href="#filesystemhandle-entry" id="ref-for-filesystemhandle-entry①⑥">entry</a>.</p>
-       <li data-md>
-        <p>If <var>options</var>.<code class="idl"><a data-link-type="idl" href="#dom-filesystemgetdirectoryoptions-create" id="ref-for-dom-filesystemgetdirectoryoptions-create③">create</a></code> is <code>true</code>:</p>
-        <ol>
-         <li data-md>
-          <p>Let <var>permissionStatus</var> be the result of <a data-link-type="dfn" href="#requesting-file-system-permission" id="ref-for-requesting-file-system-permission③">requesting file system permission</a> given <b><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this①③">this</a></b> and <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-readwrite" id="ref-for-dom-filesystempermissionmode-readwrite⑦">"readwrite"</a></code>.
- If that throws an exception, <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject⑧">reject</a> <var>result</var> with that exception and abort.</p>
-        </ol>
-       <li data-md>
-        <p>Otherwise:</p>
-        <ol>
-         <li data-md>
-          <p>Let <var>permissionStatus</var> be the result of <a data-link-type="dfn" href="#querying-file-system-permission" id="ref-for-querying-file-system-permission⑤">querying file system permission</a> given <b><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this①④">this</a></b> and <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-read" id="ref-for-dom-filesystempermissionmode-read⑧">"read"</a></code>.</p>
-        </ol>
-       <li data-md>
-        <p>If <var>permissionStatus</var> is not <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissionstate-granted" id="ref-for-dom-permissionstate-granted⑦">"granted"</a></code>,
- reject <var>result</var> with a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#notallowederror" id="ref-for-notallowederror⑤">NotAllowedError</a></code> and abort.</p>
-       <li data-md>
-        <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-iterate" id="ref-for-list-iterate②">For each</a> <var>child</var> of <var>entry</var>’s <a data-link-type="dfn" href="#directory-entry-children" id="ref-for-directory-entry-children⑥">children</a>:</p>
-        <ol>
-         <li data-md>
-          <p>If <var>child</var>’s <a data-link-type="dfn" href="#entry-name" id="ref-for-entry-name①⓪">name</a> equals <var>name</var>:</p>
-          <ol>
-           <li data-md>
-            <p>If <var>child</var> is a <a data-link-type="dfn" href="#file" id="ref-for-file⑥">file entry</a>:</p>
-            <ol>
-             <li data-md>
-              <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject⑨">Reject</a> <var>result</var> with a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#typemismatcherror" id="ref-for-typemismatcherror①">TypeMismatchError</a></code> and abort.</p>
-            </ol>
-           <li data-md>
-            <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve①③">Resolve</a> <var>result</var> with a new <code class="idl"><a data-link-type="idl" href="#filesystemdirectoryhandle" id="ref-for-filesystemdirectoryhandle⑧">FileSystemDirectoryHandle</a></code> whose <a data-link-type="dfn" href="#filesystemhandle-entry" id="ref-for-filesystemhandle-entry①⑦">entry</a> is <var>child</var> and abort.</p>
-          </ol>
-        </ol>
-       <li data-md>
-        <p>If <var>options</var>.<code class="idl"><a data-link-type="idl" href="#dom-filesystemgetfileoptions-create" id="ref-for-dom-filesystemgetfileoptions-create⑤">create</a></code> is <code>false</code>:</p>
-        <ol>
-         <li data-md>
-          <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject①⓪">Reject</a> <var>result</var> with a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#notfounderror" id="ref-for-notfounderror①">NotFoundError</a></code> and abort.</p>
-        </ol>
-       <li data-md>
-        <p>Let <var>child</var> be a new <a data-link-type="dfn" href="#directory" id="ref-for-directory⑥">directory entry</a>.</p>
-       <li data-md>
-        <p>Set <var>child</var>’s <a data-link-type="dfn" href="#entry-name" id="ref-for-entry-name①①">name</a> to <var>name</var>.</p>
-       <li data-md>
-        <p>Set <var>child</var>’s <a data-link-type="dfn" href="#directory-entry-children" id="ref-for-directory-entry-children⑦">children</a> to an empty <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#ordered-set" id="ref-for-ordered-set②">set</a>.</p>
-       <li data-md>
-        <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#set-append" id="ref-for-set-append②">Append</a> <var>child</var> to <var>entry</var>’s <a data-link-type="dfn" href="#directory-entry-children" id="ref-for-directory-entry-children⑧">children</a>.</p>
-       <li data-md>
-        <p>If creating <var>child</var> in the underlying file system throws an exception, <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject①①">reject</a> <var>result</var> with that exception and abort.</p>
-        <p class="issue" id="issue-721a33e4①"><a class="self-link" href="#issue-721a33e4①"></a> Better specify what possible exceptions this could throw. <a href="https://github.com/wicg/file-system-access/issues/68">[Issue #68]</a></p>
-       <li data-md>
-        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve①④">Resolve</a> <var>result</var> with a new <code class="idl"><a data-link-type="idl" href="#filesystemdirectoryhandle" id="ref-for-filesystemdirectoryhandle⑨">FileSystemDirectoryHandle</a></code> whose <a data-link-type="dfn" href="#filesystemhandle-entry" id="ref-for-filesystemhandle-entry①⑧">entry</a> is <var>child</var>.</p>
-      </ol>
-     <li data-md>
-      <p>Return <var>result</var>.</p>
-    </ol>
-   </div>
-   <h4 class="heading settled" data-level="2.5.4" id="api-filesystemdirectoryhandle-removeentry"><span class="secno">2.5.4. </span><span class="content">The <code class="idl"><a data-link-type="idl" href="#dom-filesystemdirectoryhandle-removeentry" id="ref-for-dom-filesystemdirectoryhandle-removeentry①">removeEntry()</a></code> method</span><a class="self-link" href="#api-filesystemdirectoryhandle-removeentry"></a></h4>
-   <div class="note domintro" role="note">
-    <dl>
-     <dt data-md>await <var>directoryHandle</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemdirectoryhandle-removeentry" id="ref-for-dom-filesystemdirectoryhandle-removeentry②">removeEntry</a></code>(<var>name</var>)
-     <dt data-md>await <var>directoryHandle</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemdirectoryhandle-removeentry" id="ref-for-dom-filesystemdirectoryhandle-removeentry③">removeEntry</a></code>(<var>name</var>, { <code class="idl"><a data-link-type="idl" href="#dom-filesystemremoveoptions-recursive" id="ref-for-dom-filesystemremoveoptions-recursive">recursive</a></code>: false })
-     <dd data-md>
-      <p>If the directory represented by <var>directoryHandle</var> contains a file named <var>name</var>, or an empty
- directory named <var>name</var>, this will attempt to delete that file or directory.</p>
-      <p>Attempting to delete a file or directory that does not exist is considered success,
- while attempting to delete a non-empty directory will result in a promise rejection.</p>
-     <dt data-md>await <var>directoryHandle</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemdirectoryhandle-removeentry" id="ref-for-dom-filesystemdirectoryhandle-removeentry④">removeEntry</a></code>(<var>name</var>, { <code class="idl"><a data-link-type="idl" href="#dom-filesystemremoveoptions-recursive" id="ref-for-dom-filesystemremoveoptions-recursive①">recursive</a></code>: true })
-     <dd data-md>
-      <p>Removes the entry named <var>name</var> in the directory represented by <var>directoryHandle</var>.
- If that entry is a directory, its contents will also be deleted recursively.
- recursively.</p>
-      <p>Attempting to delete a file or directory that does not exist is considered success.</p>
-    </dl>
-   </div>
-   <div class="algorithm" data-algorithm="removeEntry(name, options)" data-algorithm-for="FileSystemDirectoryHandle">
-     The <dfn class="dfn-paneled idl-code" data-dfn-for="FileSystemDirectoryHandle" data-dfn-type="method" data-export data-lt="removeEntry(name, options)|removeEntry(name)" id="dom-filesystemdirectoryhandle-removeentry"><code>removeEntry(<var>name</var>, <var>options</var>)</code></dfn> method, when invoked, must run
-these steps: 
-    <ol>
-     <li data-md>
-      <p>Let <var>result</var> be <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-new-promise" id="ref-for-a-new-promise⑨">a new promise</a>.</p>
-     <li data-md>
-      <p>Run the following steps <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel" id="ref-for-in-parallel⑧">in parallel</a>:</p>
-      <ol>
-       <li data-md>
-        <p>If <var>name</var> is not a <a data-link-type="dfn" href="#valid-file-name" id="ref-for-valid-file-name③">valid file name</a>, <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject①②">reject</a> <var>result</var> with a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#exceptiondef-typeerror" id="ref-for-exceptiondef-typeerror②">TypeError</a></code> and abort.</p>
-       <li data-md>
-        <p>Let <var>entry</var> be <b><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this①⑤">this</a></b>’s <a data-link-type="dfn" href="#filesystemhandle-entry" id="ref-for-filesystemhandle-entry①⑨">entry</a>.</p>
-       <li data-md>
-        <p>Let <var>permissionStatus</var> be the result of <a data-link-type="dfn" href="#requesting-file-system-permission" id="ref-for-requesting-file-system-permission④">requesting file system permission</a> given <b><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this①⑥">this</a></b> and <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-readwrite" id="ref-for-dom-filesystempermissionmode-readwrite⑧">"readwrite"</a></code>.
- If that throws an exception, <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject①③">reject</a> <var>result</var> with that exception and abort.</p>
-       <li data-md>
-        <p>If <var>permissionStatus</var> is not <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissionstate-granted" id="ref-for-dom-permissionstate-granted⑧">"granted"</a></code>,
- reject <var>result</var> with a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#notallowederror" id="ref-for-notallowederror⑥">NotAllowedError</a></code> and abort.</p>
-       <li data-md>
-        <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-iterate" id="ref-for-list-iterate③">For each</a> <var>child</var> of <var>entry</var>’s <a data-link-type="dfn" href="#directory-entry-children" id="ref-for-directory-entry-children⑨">children</a>:</p>
-        <ol>
-         <li data-md>
-          <p>If <var>child</var>’s <a data-link-type="dfn" href="#entry-name" id="ref-for-entry-name①②">name</a> equals <var>name</var>:</p>
-          <ol>
-           <li data-md>
-            <p>If <var>child</var> is a <a data-link-type="dfn" href="#directory" id="ref-for-directory⑦">directory entry</a>:</p>
-            <ol>
-             <li data-md>
-              <p>If <var>child</var>’s <a data-link-type="dfn" href="#directory-entry-children" id="ref-for-directory-entry-children①⓪">children</a> is not <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-is-empty" id="ref-for-list-is-empty">empty</a> and <var>options</var>.<code class="idl"><a data-link-type="idl" href="#dom-filesystemremoveoptions-recursive" id="ref-for-dom-filesystemremoveoptions-recursive②">recursive</a></code> is <code>false</code>:</p>
-              <ol>
-               <li data-md>
-                <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject①④">Reject</a> <var>result</var> with an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#invalidmodificationerror" id="ref-for-invalidmodificationerror">InvalidModificationError</a></code> and abort.</p>
-              </ol>
-            </ol>
-           <li data-md>
-            <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-remove" id="ref-for-list-remove">Remove</a> <var>child</var> from <var>entry</var>’s <a data-link-type="dfn" href="#directory-entry-children" id="ref-for-directory-entry-children①①">children</a>.</p>
-           <li data-md>
-            <p>If removing <var>child</var> in the underlying file system throws an exception, <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject①⑤">reject</a> <var>result</var> with that exception and abort.</p>
-            <p class="note" role="note"><span>Note:</span> If <code class="idl"><a data-link-type="idl" href="#dom-filesystemremoveoptions-recursive" id="ref-for-dom-filesystemremoveoptions-recursive③">recursive</a></code> is <code>true</code>, the removal can fail
- non-atomically. Some files or directories might have been removed while other files
- or directories still exist.</p>
-            <p class="issue" id="issue-721a33e4②"><a class="self-link" href="#issue-721a33e4②"></a> Better specify what possible exceptions this could throw. <a href="https://github.com/wicg/file-system-access/issues/68">[Issue #68]</a></p>
-           <li data-md>
-            <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve①⑤">Resolve</a> <var>result</var> with <code>undefined</code>.</p>
-          </ol>
-        </ol>
-       <li data-md>
-        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject①⑥">Reject</a> <var>result</var> with a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#notfounderror" id="ref-for-notfounderror②">NotFoundError</a></code>.</p>
-      </ol>
-     <li data-md>
-      <p>Return <var>result</var>.</p>
-    </ol>
-   </div>
-   <h4 class="heading settled" data-level="2.5.5" id="api-filesystemdirectoryhandle-resolve"><span class="secno">2.5.5. </span><span class="content">The <code class="idl"><a data-link-type="idl" href="#dom-filesystemdirectoryhandle-resolve" id="ref-for-dom-filesystemdirectoryhandle-resolve①">resolve()</a></code> method</span><a class="self-link" href="#api-filesystemdirectoryhandle-resolve"></a></h4>
-   <div class="note domintro" role="note">
-    <dl>
-     <dt data-md><var>path</var> = await <var>directory</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemdirectoryhandle-resolve" id="ref-for-dom-filesystemdirectoryhandle-resolve②">resolve</a></code>( <var>child</var> )
-     <dd data-md>
-      <p>If <var>child</var> is equal to <var>directory</var>, <var>path</var> will be an empty array.</p>
-     <dd data-md>
-      <p>If <var>child</var> is a direct child of <var>directory</var>, <var>path</var> will be an array containing <var>child</var>’s name.</p>
-     <dd data-md>
-      <p>If <var>child</var> is a descendant of <var>directory</var>, <var>path</var> will be an array containing the names of
- all the intermediate directories and <var>child</var>’s name as last element.
- For example if <var>directory</var> represents <code>/home/user/project</code> and <var>child</var> represents <code>/home/user/project/foo/bar</code>, this will return <code>['foo', 'bar']</code>.</p>
-     <dd data-md>
-      <p>Otherwise (<var>directory</var> and <var>child</var> are not related), <var>path</var> will be null.</p>
-      <p>This functionality can be useful if a web application shows a directory
- listing to highlight a file opened through a file picker in that directory listing.</p>
-    </dl>
-   </div>
-   <p><strong class="advisement"> This method is first available in Chrome 82.</strong></p>
-   <div class="example" id="filesystemdirectoryhandle-resolve-example">
-    <a class="self-link" href="#filesystemdirectoryhandle-resolve-example"></a> 
-<pre class="highlight"><c- c1>// Assume we at some point got a valid directory handle.</c->
-<c- a>const</c-> dir_ref <c- o>=</c-> current_project_dir<c- p>;</c->
-<c- k>if</c-> <c- p>(</c-><c- o>!</c->dir_ref<c- p>)</c-> <c- k>return</c-><c- p>;</c->
-
-<c- c1>// Now get a file reference by showing a file picker:</c->
-<c- a>const</c-> file_ref <c- o>=</c-> <c- k>await</c-> showOpenFilePicker<c- p>();</c->
-<c- k>if</c-> <c- p>(</c-><c- o>!</c->file_ref<c- p>)</c-> <c- p>{</c->
-    <c- c1>// User cancelled, or otherwise failed to open a file.</c->
-    <c- k>return</c-><c- p>;</c->
-<c- p>}</c->
-
-<c- c1>// Check if file_ref exists inside dir_ref:</c->
-<c- a>const</c-> relative_path <c- o>=</c-> <c- k>await</c-> dir_ref<c- p>.</c->resolve<c- p>(</c->file_ref<c- p>);</c->
-<c- k>if</c-> <c- p>(</c->relative_path <c- o>===</c-> <c- kc>null</c-><c- p>)</c-> <c- p>{</c->
-    <c- c1>// Not inside dir_ref</c->
-<c- p>}</c-> <c- k>else</c-> <c- p>{</c->
-    <c- c1>// relative_path is an array of names, giving the relative path</c->
-    <c- c1>// from dir_ref to the file that is represented by file_ref:</c->
-    assert relative_path<c- p>.</c->pop<c- p>()</c-> <c- o>===</c-> file_ref<c- p>.</c->name<c- p>;</c->
-
-    <c- a>let</c-> entry <c- o>=</c-> dir_ref<c- p>;</c->
-    <c- k>for</c-> <c- p>(</c-><c- a>const</c-> name <c- k>of</c-> relative_path<c- p>)</c-> <c- p>{</c->
-        entry <c- o>=</c-> <c- k>await</c-> entry<c- p>.</c->getDirectoryHandle<c- p>(</c->name<c- p>);</c->
-    <c- p>}</c->
-    entry <c- o>=</c-> <c- k>await</c-> entry<c- p>.</c->getFileHandle<c- p>(</c->file_ref<c- p>.</c->name<c- p>);</c->
-
-    <c- c1>// Now |entry| will represent the same file on disk as |file_ref|.</c->
-    assert <c- k>await</c-> entry<c- p>.</c->isSameEntry<c- p>(</c->file_ref<c- p>)</c-> <c- o>===</c-> <c- kc>true</c-><c- p>;</c->
-<c- p>}</c->
-</pre>
-   </div>
-   <div class="algorithm" data-algorithm="resolve(possibleDescendant)" data-algorithm-for="FileSystemDirectoryHandle"> The <dfn class="dfn-paneled idl-code" data-dfn-for="FileSystemDirectoryHandle" data-dfn-type="method" data-export id="dom-filesystemdirectoryhandle-resolve"><code>resolve(<var>possibleDescendant</var>)</code></dfn> method,
-when invoked, must return the result of <a data-link-type="dfn" href="#entry-resolve" id="ref-for-entry-resolve①">resolving</a> <var>possibleDescendant</var>’s <a data-link-type="dfn" href="#filesystemhandle-entry" id="ref-for-filesystemhandle-entry②⓪">entry</a> relative to <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this①⑦">this</a>'s <a data-link-type="dfn" href="#filesystemhandle-entry" id="ref-for-filesystemhandle-entry②①">entry</a>. </div>
-   <h3 class="heading settled" data-level="2.6" id="api-filesystemwritablefilestream"><span class="secno">2.6. </span><span class="content">The <code class="idl"><a data-link-type="idl" href="#filesystemwritablefilestream" id="ref-for-filesystemwritablefilestream②">FileSystemWritableFileStream</a></code> interface</span><a class="self-link" href="#api-filesystemwritablefilestream"></a></h3>
-<pre class="idl highlight def"><c- b>enum</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="enum" data-export id="enumdef-writecommandtype"><code><c- g>WriteCommandType</c-></code></dfn> {
-  <dfn class="dfn-paneled idl-code" data-dfn-for="WriteCommandType" data-dfn-type="enum-value" data-export id="dom-writecommandtype-write"><code><c- s>"write"</c-></code></dfn>,
-  <dfn class="dfn-paneled idl-code" data-dfn-for="WriteCommandType" data-dfn-type="enum-value" data-export id="dom-writecommandtype-seek"><code><c- s>"seek"</c-></code></dfn>,
-  <dfn class="dfn-paneled idl-code" data-dfn-for="WriteCommandType" data-dfn-type="enum-value" data-export id="dom-writecommandtype-truncate"><code><c- s>"truncate"</c-></code></dfn>,
-};
-
-<c- b>dictionary</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="dictionary" data-export id="dictdef-writeparams"><code><c- g>WriteParams</c-></code></dfn> {
-  <c- b>required</c-> <a data-link-type="idl-name" href="#enumdef-writecommandtype" id="ref-for-enumdef-writecommandtype"><c- n>WriteCommandType</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="WriteParams" data-dfn-type="dict-member" data-export data-type="WriteCommandType " id="dom-writeparams-type"><code><c- g>type</c-></code></dfn>;
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-unsigned-long-long" id="ref-for-idl-unsigned-long-long"><c- b>unsigned</c-> <c- b>long</c-> <c- b>long</c-></a>? <dfn class="dfn-paneled idl-code" data-dfn-for="WriteParams" data-dfn-type="dict-member" data-export data-type="unsigned long long? " id="dom-writeparams-size"><code><c- g>size</c-></code></dfn>;
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-unsigned-long-long" id="ref-for-idl-unsigned-long-long①"><c- b>unsigned</c-> <c- b>long</c-> <c- b>long</c-></a>? <dfn class="dfn-paneled idl-code" data-dfn-for="WriteParams" data-dfn-type="dict-member" data-export data-type="unsigned long long? " id="dom-writeparams-position"><code><c- g>position</c-></code></dfn>;
-  (<a data-link-type="idl-name" href="https://webidl.spec.whatwg.org/#BufferSource" id="ref-for-BufferSource"><c- n>BufferSource</c-></a> <c- b>or</c-> <a data-link-type="idl-name" href="https://w3c.github.io/FileAPI/#dfn-Blob" id="ref-for-dfn-Blob"><c- n>Blob</c-></a> <c- b>or</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString" id="ref-for-idl-USVString⑥"><c- b>USVString</c-></a>)? <dfn class="dfn-paneled idl-code" data-dfn-for="WriteParams" data-dfn-type="dict-member" data-export data-type="(BufferSource or Blob or USVString)? " id="dom-writeparams-data"><code><c- g>data</c-></code></dfn>;
-};
-
-<c- b>typedef</c-> (<a data-link-type="idl-name" href="https://webidl.spec.whatwg.org/#BufferSource" id="ref-for-BufferSource①"><c- n>BufferSource</c-></a> <c- b>or</c-> <a data-link-type="idl-name" href="https://w3c.github.io/FileAPI/#dfn-Blob" id="ref-for-dfn-Blob①"><c- n>Blob</c-></a> <c- b>or</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString" id="ref-for-idl-USVString⑦"><c- b>USVString</c-></a> <c- b>or</c-> <a data-link-type="idl-name" href="#dictdef-writeparams" id="ref-for-dictdef-writeparams"><c- n>WriteParams</c-></a>) <dfn class="dfn-paneled idl-code" data-dfn-type="typedef" data-export id="typedefdef-filesystemwritechunktype"><code><c- g>FileSystemWriteChunkType</c-></code></dfn>;
-
-[<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#Exposed" id="ref-for-Exposed③"><c- g>Exposed</c-></a>=(<c- n>Window</c->,<c- n>Worker</c->), <a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#SecureContext" id="ref-for-SecureContext③"><c- g>SecureContext</c-></a>]
-<c- b>interface</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="interface" data-export id="filesystemwritablefilestream"><code><c- g>FileSystemWritableFileStream</c-></code></dfn> : <a data-link-type="idl-name" href="https://streams.spec.whatwg.org/#writablestream" id="ref-for-writablestream"><c- n>WritableStream</c-></a> {
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise⑨"><c- b>Promise</c-></a>&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-undefined" id="ref-for-idl-undefined①"><c- b>undefined</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-filesystemwritablefilestream-write" id="ref-for-dom-filesystemwritablefilestream-write"><c- g>write</c-></a>(<a data-link-type="idl-name" href="#typedefdef-filesystemwritechunktype" id="ref-for-typedefdef-filesystemwritechunktype"><c- n>FileSystemWriteChunkType</c-></a> <dfn class="idl-code" data-dfn-for="FileSystemWritableFileStream/write(data)" data-dfn-type="argument" data-export id="dom-filesystemwritablefilestream-write-data-data"><code><c- g>data</c-></code><a class="self-link" href="#dom-filesystemwritablefilestream-write-data-data"></a></dfn>);
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise①⓪"><c- b>Promise</c-></a>&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-undefined" id="ref-for-idl-undefined②"><c- b>undefined</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-filesystemwritablefilestream-seek" id="ref-for-dom-filesystemwritablefilestream-seek"><c- g>seek</c-></a>(<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-unsigned-long-long" id="ref-for-idl-unsigned-long-long②"><c- b>unsigned</c-> <c- b>long</c-> <c- b>long</c-></a> <dfn class="idl-code" data-dfn-for="FileSystemWritableFileStream/seek(position)" data-dfn-type="argument" data-export id="dom-filesystemwritablefilestream-seek-position-position"><code><c- g>position</c-></code><a class="self-link" href="#dom-filesystemwritablefilestream-seek-position-position"></a></dfn>);
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise①①"><c- b>Promise</c-></a>&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-undefined" id="ref-for-idl-undefined③"><c- b>undefined</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-filesystemwritablefilestream-truncate" id="ref-for-dom-filesystemwritablefilestream-truncate"><c- g>truncate</c-></a>(<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-unsigned-long-long" id="ref-for-idl-unsigned-long-long③"><c- b>unsigned</c-> <c- b>long</c-> <c- b>long</c-></a> <dfn class="idl-code" data-dfn-for="FileSystemWritableFileStream/truncate(size)" data-dfn-type="argument" data-export id="dom-filesystemwritablefilestream-truncate-size-size"><code><c- g>size</c-></code><a class="self-link" href="#dom-filesystemwritablefilestream-truncate-size-size"></a></dfn>);
-};
-</pre>
-   <p>A <code class="idl"><a data-link-type="idl" href="#filesystemwritablefilestream" id="ref-for-filesystemwritablefilestream③">FileSystemWritableFileStream</a></code> has an associated <dfn class="dfn-paneled" data-dfn-for="FileSystemWritableFileStream" data-dfn-type="dfn" data-noexport id="filesystemwritablefilestream-file">[[file]]</dfn> (a <a data-link-type="dfn" href="#file" id="ref-for-file⑦">file entry</a>).</p>
-   <p>A <code class="idl"><a data-link-type="idl" href="#filesystemwritablefilestream" id="ref-for-filesystemwritablefilestream④">FileSystemWritableFileStream</a></code> has an associated <dfn class="dfn-paneled" data-dfn-for="FileSystemWritableFileStream" data-dfn-type="dfn" data-noexport id="filesystemwritablefilestream-buffer">[[buffer]]</dfn> (a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte-sequence" id="ref-for-byte-sequence②">byte sequence</a>).
-It is initially empty.</p>
-   <p class="note" role="note"><span>Note:</span> This buffer can get arbitrarily large, so it is expected that implementations will not keep this in memory,
-but instead use a temporary file for this. All access to [[buffer]] is done in promise returning methods and
-algorithms, so even though operations on it seem sync, implementations can implement them async.</p>
-   <p>A <code class="idl"><a data-link-type="idl" href="#filesystemwritablefilestream" id="ref-for-filesystemwritablefilestream⑤">FileSystemWritableFileStream</a></code> has an associated <dfn class="dfn-paneled" data-dfn-for="FileSystemWritableFileStream" data-dfn-type="dfn" data-noexport id="filesystemwritablefilestream-seekoffset">[[seekOffset]]</dfn> (a number).
-It is initially 0.</p>
-   <div class="note domintro" role="note">
-     A <code class="idl"><a data-link-type="idl" href="#filesystemwritablefilestream" id="ref-for-filesystemwritablefilestream⑥">FileSystemWritableFileStream</a></code> object is a <code class="idl"><a data-link-type="idl" href="https://streams.spec.whatwg.org/#writablestream" id="ref-for-writablestream①">WritableStream</a></code> object with additional
-convenience methods, which operates on a single file on disk. 
-    <p>Upon creation, an underlying sink will have been created and the stream will be usable.
-All operations executed on the stream are queuable and producers will be able to respond to backpressure.</p>
-    <p>The underlying sink’s write method, and therefore <code class="idl"><a data-link-type="idl" href="https://streams.spec.whatwg.org/#default-writer-write" id="ref-for-default-writer-write">WritableStreamDefaultWriter’s write()</a></code> method, will accept byte-like data or <code class="idl"><a data-link-type="idl" href="#dictdef-writeparams" id="ref-for-dictdef-writeparams①">WriteParams</a></code> as input.</p>
-    <p>The <code class="idl"><a data-link-type="idl" href="#filesystemwritablefilestream" id="ref-for-filesystemwritablefilestream⑦">FileSystemWritableFileStream</a></code> has a file position cursor initialized at byte offset 0 from the top of the file.
-When using <code class="idl"><a data-link-type="idl" href="#dom-filesystemwritablefilestream-write" id="ref-for-dom-filesystemwritablefilestream-write①">write()</a></code> or by using WritableStream capabilities through the <code class="idl"><a data-link-type="idl" href="https://streams.spec.whatwg.org/#default-writer-write" id="ref-for-default-writer-write①">WritableStreamDefaultWriter’s write()</a></code> method, this position will be advanced based on the number of bytes written through the stream object.</p>
-    <p>Similarly, when piping a <code class="idl"><a data-link-type="idl" href="https://streams.spec.whatwg.org/#readablestream" id="ref-for-readablestream">ReadableStream</a></code> into a <code class="idl"><a data-link-type="idl" href="#filesystemwritablefilestream" id="ref-for-filesystemwritablefilestream⑧">FileSystemWritableFileStream</a></code> object, this position is updated with the number of bytes that passed through the stream.</p>
-    <p><code class="idl"><a data-link-type="idl" href="https://streams.spec.whatwg.org/#ws-get-writer" id="ref-for-ws-get-writer">getWriter()</a></code> returns an instance of <code class="idl"><a data-link-type="idl" href="https://streams.spec.whatwg.org/#writablestreamdefaultwriter" id="ref-for-writablestreamdefaultwriter">WritableStreamDefaultWriter</a></code>.</p>
-   </div>
-   <div class="algorithm" data-algorithm="create a new FileSystemWritableFileStream">
-     To <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="create-a-new-filesystemwritablefilestream">create a new FileSystemWritableFileStream</dfn> given a <a data-link-type="dfn" href="#file" id="ref-for-file⑧">file entry</a> <var>file</var> in a <a data-link-type="dfn" href="https://tc39.github.io/ecma262/#realm" id="ref-for-realm">Realm</a> <var>realm</var>, perform the following steps: 
-    <ol>
-     <li data-md>
-      <p>Let <var>stream</var> be a <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#new" id="ref-for-new">new</a> <code class="idl"><a data-link-type="idl" href="#filesystemwritablefilestream" id="ref-for-filesystemwritablefilestream⑨">FileSystemWritableFileStream</a></code> in <var>realm</var>.</p>
-     <li data-md>
-      <p>Set <var>stream</var>.<a data-link-type="dfn" href="#filesystemwritablefilestream-file" id="ref-for-filesystemwritablefilestream-file">[[file]]</a> to <var>file</var>.</p>
-     <li data-md>
-      <p>Let <var>writeAlgorithm</var> be an algorithm which takes a <var>chunk</var> argument
- and returns the result of running the <a data-link-type="dfn" href="#write-a-chunk" id="ref-for-write-a-chunk">write a chunk</a> algorithm with <var>stream</var> and <var>chunk</var>.</p>
-     <li data-md>
-      <p>Let <var>closeAlgorithm</var> be the following steps:</p>
-      <ol>
-       <li data-md>
-        <p>Let <var>closeResult</var> be <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-new-promise" id="ref-for-a-new-promise①⓪">a new promise</a>.</p>
-       <li data-md>
-        <p>Run the following steps <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel" id="ref-for-in-parallel⑨">in parallel</a>:</p>
-        <ol>
-         <li data-md>
-          <p>Let <var>permissionStatus</var> be the <a data-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-permission-state" id="ref-for-dfn-permission-state⑦">permission state</a> for a <code class="idl"><a data-link-type="idl" href="#dictdef-filesystempermissiondescriptor" id="ref-for-dictdef-filesystempermissiondescriptor⑤">FileSystemPermissionDescriptor</a></code> with <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-handle" id="ref-for-dom-filesystempermissiondescriptor-handle⑧">handle</a></code> representing <var>stream</var>.<a data-link-type="dfn" href="#filesystemwritablefilestream-file" id="ref-for-filesystemwritablefilestream-file①">[[file]]</a>,
- and <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-mode" id="ref-for-dom-filesystempermissiondescriptor-mode⑥">mode</a></code> = <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-readwrite" id="ref-for-dom-filesystempermissionmode-readwrite⑨">"readwrite"</a></code>.</p>
-         <li data-md>
-          <p>If <var>permissionStatus</var> is not <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissionstate-granted" id="ref-for-dom-permissionstate-granted⑨">"granted"</a></code>,
- reject <var>closeResult</var> with a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#notallowederror" id="ref-for-notallowederror⑦">NotAllowedError</a></code> and abort.</p>
-         <li data-md>
-          <p>Perform user agent-specific <a data-link-type="dfn" href="#wellknowndirectory-malware-scans-and-safe-browsing-checks" id="ref-for-wellknowndirectory-malware-scans-and-safe-browsing-checks">malware scans and safe browsing checks</a>.
- If these checks fail, <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject①⑦">reject</a> <var>closeResult</var> with an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#aborterror" id="ref-for-aborterror">AbortError</a></code> and abort.</p>
-         <li data-md>
-          <p>Set <var>stream</var>.<a data-link-type="dfn" href="#filesystemwritablefilestream-file" id="ref-for-filesystemwritablefilestream-file②">[[file]]</a>'s <a data-link-type="dfn" href="#file-entry-binary-data" id="ref-for-file-entry-binary-data④">binary data</a> to <var>stream</var>.<a data-link-type="dfn" href="#filesystemwritablefilestream-buffer" id="ref-for-filesystemwritablefilestream-buffer①">[[buffer]]</a>.
- If that throws an exception, <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject①⑧">reject</a> <var>closeResult</var> with that exception and abort.</p>
-          <p class="note" role="note"><span>Note:</span> It is expected that this atomically updates the contents of the file on disk
- being written to.</p>
-         <li data-md>
-          <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve①⑥">Resolve</a> <var>closeResult</var> with <code>undefined</code>.</p>
-        </ol>
-       <li data-md>
-        <p>Return <var>closeResult</var>.</p>
-      </ol>
-     <li data-md>
-      <p>Let <var>highWaterMark</var> be 1.</p>
-     <li data-md>
-      <p>Let <var>sizeAlgorithm</var> be an algorithm that returns <code>1</code>.</p>
-     <li data-md>
-      <p><a data-link-type="dfn" href="https://streams.spec.whatwg.org/#writablestream-set-up" id="ref-for-writablestream-set-up">Set up</a> <var>stream</var> with <a data-link-type="dfn" href="https://streams.spec.whatwg.org/#writablestream-set-up-writealgorithm" id="ref-for-writablestream-set-up-writealgorithm"><var>writeAlgorithm</var></a> set to <var>writeAlgorithm</var>, <a data-link-type="dfn" href="https://streams.spec.whatwg.org/#writablestream-set-up-closealgorithm" id="ref-for-writablestream-set-up-closealgorithm"><var>closeAlgorithm</var></a> set to <var>closeAlgorithm</var>, <a data-link-type="dfn" href="https://streams.spec.whatwg.org/#writablestream-set-up-highwatermark" id="ref-for-writablestream-set-up-highwatermark"><var>highWaterMark</var></a> set to <var>highWaterMark</var>, and <a data-link-type="dfn" href="https://streams.spec.whatwg.org/#writablestream-set-up-sizealgorithm" id="ref-for-writablestream-set-up-sizealgorithm"><var>sizeAlgorithm</var></a> set to <var>sizeAlgorithm</var>.</p>
-     <li data-md>
-      <p>Return <var>stream</var>.</p>
-    </ol>
-   </div>
-   <div class="algorithm" data-algorithm="write a chunk">
-     The <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="write-a-chunk">write a chunk</dfn> algorithm,
-given a <code class="idl"><a data-link-type="idl" href="#filesystemwritablefilestream" id="ref-for-filesystemwritablefilestream①⓪">FileSystemWritableFileStream</a></code> <var>stream</var> and <var>chunk</var>,
-runs these steps: 
-    <ol>
-     <li data-md>
-      <p>Let <var>input</var> be the result of <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#javascript-string-convert" id="ref-for-javascript-string-convert">converting</a> <var>chunk</var> to a <code class="idl"><a data-link-type="idl" href="#typedefdef-filesystemwritechunktype" id="ref-for-typedefdef-filesystemwritechunktype①">FileSystemWriteChunkType</a></code>.
- If this throws an exception, then return <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-promise-rejected-with" id="ref-for-a-promise-rejected-with">a promise rejected with</a> that exception.</p>
-     <li data-md>
-      <p>Let <var>p</var> be <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-new-promise" id="ref-for-a-new-promise①①">a new promise</a>.</p>
-     <li data-md>
-      <p>Run the following steps <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel" id="ref-for-in-parallel①⓪">in parallel</a>:</p>
-      <ol>
-       <li data-md>
-        <p>Let <var>permissionStatus</var> be the <a data-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-permission-state" id="ref-for-dfn-permission-state⑧">permission state</a> for a <code class="idl"><a data-link-type="idl" href="#dictdef-filesystempermissiondescriptor" id="ref-for-dictdef-filesystempermissiondescriptor⑥">FileSystemPermissionDescriptor</a></code> with <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-handle" id="ref-for-dom-filesystempermissiondescriptor-handle⑨">handle</a></code> representing <var>stream</var>.<a data-link-type="dfn" href="#filesystemwritablefilestream-file" id="ref-for-filesystemwritablefilestream-file③">[[file]]</a>,
-  and <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-mode" id="ref-for-dom-filesystempermissiondescriptor-mode⑦">mode</a></code> = <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-readwrite" id="ref-for-dom-filesystempermissionmode-readwrite①⓪">"readwrite"</a></code>.</p>
-       <li data-md>
-        <p>If <var>permissionStatus</var> is not <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissionstate-granted" id="ref-for-dom-permissionstate-granted①⓪">"granted"</a></code>,
-  reject <var>p</var> with a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#notallowederror" id="ref-for-notallowederror⑧">NotAllowedError</a></code> and abort.</p>
-       <li data-md>
-        <p>Let <var>command</var> be <var>input</var>.<code class="idl"><a data-link-type="idl" href="#dom-writeparams-type" id="ref-for-dom-writeparams-type">type</a></code> if <var>input</var> is a <code class="idl"><a data-link-type="idl" href="#dictdef-writeparams" id="ref-for-dictdef-writeparams②">WriteParams</a></code>,
-  and <code class="idl"><a data-link-type="idl" href="#dom-writecommandtype-write" id="ref-for-dom-writecommandtype-write">"write"</a></code> otherwise.</p>
-       <li data-md>
-        <p>If <var>command</var> is <code class="idl"><a data-link-type="idl" href="#dom-writecommandtype-write" id="ref-for-dom-writecommandtype-write①">"write"</a></code>:</p>
-        <ol>
-         <li data-md>
-          <p>Let <var>data</var> be <var>input</var>.<code class="idl"><a data-link-type="idl" href="#dom-writeparams-data" id="ref-for-dom-writeparams-data">data</a></code> if <var>input</var> is a <code class="idl"><a data-link-type="idl" href="#dictdef-writeparams" id="ref-for-dictdef-writeparams③">WriteParams</a></code>,
- and <var>input</var> otherwise.</p>
-         <li data-md>
-          <p>If <var>data</var> is <code>undefined</code>,
- reject <var>p</var> with a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#exceptiondef-typeerror" id="ref-for-exceptiondef-typeerror③">TypeError</a></code> and abort.</p>
-         <li data-md>
-          <p>Let <var>writePosition</var> be <var>stream</var>.<a data-link-type="dfn" href="#filesystemwritablefilestream-seekoffset" id="ref-for-filesystemwritablefilestream-seekoffset">[[seekOffset]]</a>.</p>
-         <li data-md>
-          <p>If <var>input</var> is a <code class="idl"><a data-link-type="idl" href="#dictdef-writeparams" id="ref-for-dictdef-writeparams④">WriteParams</a></code> and <var>input</var>.<code class="idl"><a data-link-type="idl" href="#dom-writeparams-position" id="ref-for-dom-writeparams-position">position</a></code> is not <code>undefined</code>,
- set <var>writePosition</var> to <var>input</var>.<code class="idl"><a data-link-type="idl" href="#dom-writeparams-position" id="ref-for-dom-writeparams-position①">position</a></code>.</p>
-         <li data-md>
-          <p>Let <var>oldSize</var> be <var>stream</var>.<a data-link-type="dfn" href="#filesystemwritablefilestream-buffer" id="ref-for-filesystemwritablefilestream-buffer②">[[buffer]]</a>'s <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte-sequence-length" id="ref-for-byte-sequence-length">length</a>.</p>
-         <li data-md>
-          <p>If <var>data</var> is a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#BufferSource" id="ref-for-BufferSource②">BufferSource</a></code>,
- let <var>dataBytes</var> be <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#dfn-get-buffer-source-copy" id="ref-for-dfn-get-buffer-source-copy">a copy of</a> <var>data</var>.</p>
-         <li data-md>
-          <p>Else if <var>data</var> is a <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/FileAPI/#dfn-Blob" id="ref-for-dfn-Blob②">Blob</a></code>:</p>
-          <ol>
-           <li data-md>
-            <p>Let <var>dataBytes</var> be the result of performing the <a data-link-type="dfn" href="https://w3c.github.io/FileAPI/#readOperation" id="ref-for-readOperation">read operation</a> on <var>data</var>.
-  If this throws an exception, <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject①⑨">reject</a> <var>p</var> with that exception and abort.</p>
-          </ol>
-         <li data-md>
-          <p>Else:</p>
-          <ol>
-           <li data-md>
-            <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#assert" id="ref-for-assert">Assert</a>: <var>data</var> is a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-USVString" id="ref-for-idl-USVString⑧">USVString</a></code>.</p>
-           <li data-md>
-            <p>Let <var>dataBytes</var> be the result of <a data-link-type="dfn" href="https://encoding.spec.whatwg.org/#utf-8-encode" id="ref-for-utf-8-encode">UTF-8 encoding</a> <var>data</var>.</p>
-          </ol>
-         <li data-md>
-          <p>If <var>writePosition</var> is larger than <var>oldSize</var>,
- append <var>writePosition</var> - <var>oldSize</var> <code>0x00</code> (NUL) bytes to the end of <var>stream</var>.<a data-link-type="dfn" href="#filesystemwritablefilestream-buffer" id="ref-for-filesystemwritablefilestream-buffer③">[[buffer]]</a>.</p>
-          <p class="note" role="note"><span>Note:</span> Implementations are expected to behave as if the skipped over file contents
- are indeed filled with NUL bytes. That doesn’t mean these bytes have to actually be
- written to disk and take up disk space. Instead most file systems support so called
- sparse files, where these NUL bytes don’t take up actual disk space.</p>
-         <li data-md>
-          <p>Let <var>head</var> be a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte-sequence" id="ref-for-byte-sequence③">byte sequence</a> containing the first <var>writePosition</var> bytes of <var>stream</var>.<a data-link-type="dfn" href="#filesystemwritablefilestream-buffer" id="ref-for-filesystemwritablefilestream-buffer④">[[buffer]]</a>.</p>
-         <li data-md>
-          <p>Let <var>tail</var> be an empty <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte-sequence" id="ref-for-byte-sequence④">byte sequence</a>.</p>
-         <li data-md>
-          <p>If <var>writePosition</var> + <var>data</var>.<a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte-sequence-length" id="ref-for-byte-sequence-length①">length</a> is smaller than <var>oldSize</var>:</p>
-          <ol>
-           <li data-md>
-            <p>Let <var>tail</var> be a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte-sequence" id="ref-for-byte-sequence⑤">byte sequence</a> containing the last <var>oldSize</var> - (<var>writePosition</var> + <var>data</var>.<a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte-sequence-length" id="ref-for-byte-sequence-length②">length</a>) bytes of <var>stream</var>.<a data-link-type="dfn" href="#filesystemwritablefilestream-buffer" id="ref-for-filesystemwritablefilestream-buffer⑤">[[buffer]]</a>.</p>
-          </ol>
-         <li data-md>
-          <p>Set <var>stream</var>.<a data-link-type="dfn" href="#filesystemwritablefilestream-buffer" id="ref-for-filesystemwritablefilestream-buffer⑥">[[buffer]]</a> to the concatenation of <var>head</var>, <var>data</var> and <var>tail</var>.</p>
-         <li data-md>
-          <p>If the operations modifying <var>stream</var>.<a data-link-type="dfn" href="#filesystemwritablefilestream-buffer" id="ref-for-filesystemwritablefilestream-buffer⑦">[[buffer]]</a> in the previous steps failed
- due to exceeding the <a data-link-type="dfn" href="https://storage.spec.whatwg.org/#storage-quota" id="ref-for-storage-quota">storage quota</a>, <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject②⓪">reject</a> <var>p</var> with a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#quotaexceedederror" id="ref-for-quotaexceedederror">QuotaExceededError</a></code> and abort,
- leaving <var>stream</var>.<a data-link-type="dfn" href="#filesystemwritablefilestream-buffer" id="ref-for-filesystemwritablefilestream-buffer⑧">[[buffer]]</a> unmodified.</p>
-          <p class="note" role="note"><span>Note:</span> <a data-link-type="dfn" href="https://storage.spec.whatwg.org/#storage-quota" id="ref-for-storage-quota①">Storage quota</a> only applies to files stored in the <a data-link-type="dfn">origin private file system</a>.
- However this operation could still fail for other files, for example if the disk being written
- to runs out of disk space.</p>
-         <li data-md>
-          <p>Set <var>stream</var>.<a data-link-type="dfn" href="#filesystemwritablefilestream-seekoffset" id="ref-for-filesystemwritablefilestream-seekoffset①">[[seekOffset]]</a> to <var>writePosition</var> + <var>data</var>.<a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte-sequence-length" id="ref-for-byte-sequence-length③">length</a>.</p>
-         <li data-md>
-          <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve①⑦">Resolve</a> <var>p</var>.</p>
-        </ol>
-       <li data-md>
-        <p>Else if <var>command</var> is <code class="idl"><a data-link-type="idl" href="#dom-writecommandtype-seek" id="ref-for-dom-writecommandtype-seek">"seek"</a></code>:</p>
-        <ol>
-         <li data-md>
-          <p>If <var>chunk</var>.<code class="idl"><a data-link-type="idl" href="#dom-writeparams-position" id="ref-for-dom-writeparams-position②">position</a></code> is <code>undefined</code>, <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject②①">reject</a> <var>p</var> with a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#exceptiondef-typeerror" id="ref-for-exceptiondef-typeerror④">TypeError</a></code> and abort.</p>
-         <li data-md>
-          <p>Set <var>stream</var>.<a data-link-type="dfn" href="#filesystemwritablefilestream-seekoffset" id="ref-for-filesystemwritablefilestream-seekoffset②">[[seekOffset]]</a> to <var>chunk</var>.<code class="idl"><a data-link-type="idl" href="#dom-writeparams-position" id="ref-for-dom-writeparams-position③">position</a></code>.</p>
-         <li data-md>
-          <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve①⑧">Resolve</a> <var>p</var>.</p>
-        </ol>
-       <li data-md>
-        <p>Else if <var>command</var> is <code class="idl"><a data-link-type="idl" href="#dom-writecommandtype-truncate" id="ref-for-dom-writecommandtype-truncate">"truncate"</a></code>:</p>
-        <ol>
-         <li data-md>
-          <p>If <var>chunk</var>.<code class="idl"><a data-link-type="idl" href="#dom-writeparams-size" id="ref-for-dom-writeparams-size">size</a></code> is <code>undefined</code>, <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject②②">reject</a> <var>p</var> with a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#exceptiondef-typeerror" id="ref-for-exceptiondef-typeerror⑤">TypeError</a></code> and abort.</p>
-         <li data-md>
-          <p>Let <var>newSize</var> be <var>chunk</var>.<code class="idl"><a data-link-type="idl" href="#dom-writeparams-size" id="ref-for-dom-writeparams-size①">size</a></code>.</p>
-         <li data-md>
-          <p>Let <var>oldSize</var> be <var>stream</var>.<a data-link-type="dfn" href="#filesystemwritablefilestream-buffer" id="ref-for-filesystemwritablefilestream-buffer⑨">[[buffer]]</a>'s <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte-sequence-length" id="ref-for-byte-sequence-length④">length</a>.</p>
-         <li data-md>
-          <p>If <var>newSize</var> is larger than <var>oldSize</var>:</p>
-          <ol>
-           <li data-md>
-            <p>Set <var>stream</var>.<a data-link-type="dfn" href="#filesystemwritablefilestream-buffer" id="ref-for-filesystemwritablefilestream-buffer①⓪">[[buffer]]</a> to a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte-sequence" id="ref-for-byte-sequence⑥">byte sequence</a> formed by concating <var>stream</var>.<a data-link-type="dfn" href="#filesystemwritablefilestream-buffer" id="ref-for-filesystemwritablefilestream-buffer①①">[[buffer]]</a> with a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte-sequence" id="ref-for-byte-sequence⑦">byte sequence</a> containing <var>newSize</var>-<var>oldSize</var> <code>0x00</code> bytes.</p>
-           <li data-md>
-            <p>If the operation in the previous step failed due to exceeding the <a data-link-type="dfn" href="https://storage.spec.whatwg.org/#storage-quota" id="ref-for-storage-quota②">storage quota</a>, <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject②③">reject</a> <var>p</var> with a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#quotaexceedederror" id="ref-for-quotaexceedederror①">QuotaExceededError</a></code> and abort,
-  leaving <var>stream</var>.<a data-link-type="dfn" href="#filesystemwritablefilestream-buffer" id="ref-for-filesystemwritablefilestream-buffer①②">[[buffer]]</a> unmodified.</p>
-            <p class="note" role="note"><span>Note:</span> <a data-link-type="dfn" href="https://storage.spec.whatwg.org/#storage-quota" id="ref-for-storage-quota③">Storage quota</a> only applies to files stored in the <a data-link-type="dfn">origin private file system</a>.
-  However this operation could still fail for other files, for example if the disk being written
-  to runs out of disk space.</p>
-          </ol>
-         <li data-md>
-          <p>Else if <var>newSize</var> is smaller than <var>oldSize</var>:</p>
-          <ol>
-           <li data-md>
-            <p>Set <var>stream</var>.<a data-link-type="dfn" href="#filesystemwritablefilestream-buffer" id="ref-for-filesystemwritablefilestream-buffer①③">[[buffer]]</a> to a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte-sequence" id="ref-for-byte-sequence⑧">byte sequence</a> containing the first <var>newSize</var> bytes
-  in <var>stream</var>.<a data-link-type="dfn" href="#filesystemwritablefilestream-buffer" id="ref-for-filesystemwritablefilestream-buffer①④">[[buffer]]</a>.</p>
-          </ol>
-         <li data-md>
-          <p>If <var>stream</var>.<a data-link-type="dfn" href="#filesystemwritablefilestream-seekoffset" id="ref-for-filesystemwritablefilestream-seekoffset③">[[seekOffset]]</a> is bigger than <var>newSize</var>,
- set <var>stream</var>.<a data-link-type="dfn" href="#filesystemwritablefilestream-seekoffset" id="ref-for-filesystemwritablefilestream-seekoffset④">[[seekOffset]]</a> to <var>newSize</var>.</p>
-         <li data-md>
-          <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve①⑨">Resolve</a> <var>p</var>.</p>
-        </ol>
-      </ol>
-     <li data-md>
-      <p>Return <var>p</var>.</p>
-    </ol>
-   </div>
-   <h4 class="heading settled" data-level="2.6.1" id="api-filesystemwritablefilestream-write"><span class="secno">2.6.1. </span><span class="content">The <code class="idl"><a data-link-type="idl" href="#dom-filesystemwritablefilestream-write" id="ref-for-dom-filesystemwritablefilestream-write②">write()</a></code> method</span><a class="self-link" href="#api-filesystemwritablefilestream-write"></a></h4>
-   <div class="note domintro" role="note">
-    <dl>
-     <dt data-md>await <var>stream</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemwritablefilestream-write" id="ref-for-dom-filesystemwritablefilestream-write③">write</a></code>(<var>data</var>)
-     <dt data-md>await <var>stream</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemwritablefilestream-write" id="ref-for-dom-filesystemwritablefilestream-write④">write</a></code>({ <code class="idl"><a data-link-type="idl" href="#dom-writeparams-type" id="ref-for-dom-writeparams-type①">type</a></code>: <code class="idl"><a data-link-type="idl" href="#dom-writecommandtype-write" id="ref-for-dom-writecommandtype-write②">"write"</a></code>, <code class="idl"><a data-link-type="idl" href="#dom-writeparams-data" id="ref-for-dom-writeparams-data①">data</a></code>: <var>data</var> })
-     <dd data-md>
-      <p>Writes the content of <var>data</var> into the file associated with <var>stream</var> at the current file
- cursor offset.</p>
-      <p>No changes are written to the actual file on disk until the stream has been closed.
- Changes are typically written to a temporary file instead.</p>
-     <dt data-md>await <var>stream</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemwritablefilestream-write" id="ref-for-dom-filesystemwritablefilestream-write⑤">write</a></code>({ <code class="idl"><a data-link-type="idl" href="#dom-writeparams-type" id="ref-for-dom-writeparams-type②">type</a></code>: <code class="idl"><a data-link-type="idl" href="#dom-writecommandtype-write" id="ref-for-dom-writecommandtype-write③">"write"</a></code>, <code class="idl"><a data-link-type="idl" href="#dom-writeparams-position" id="ref-for-dom-writeparams-position④">position</a></code>: <var>position</var>, <code class="idl"><a data-link-type="idl" href="#dom-writeparams-data" id="ref-for-dom-writeparams-data②">data</a></code>: <var>data</var> })
-     <dd data-md>
-      <p>Writes the content of <var>data</var> into the file associated with <var>stream</var> at <var>position</var> bytes from the top of the file. Also updates the current file cursor offset to the
- end of the written data.</p>
-      <p>No changes are written to the actual file on disk until the stream has been closed.
- Changes are typically written to a temporary file instead.</p>
-     <dt data-md>await <var>stream</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemwritablefilestream-write" id="ref-for-dom-filesystemwritablefilestream-write⑥">write</a></code>({ <code class="idl"><a data-link-type="idl" href="#dom-writeparams-type" id="ref-for-dom-writeparams-type③">type</a></code>: <code class="idl"><a data-link-type="idl" href="#dom-writecommandtype-seek" id="ref-for-dom-writecommandtype-seek①">"seek"</a></code>, <code class="idl"><a data-link-type="idl" href="#dom-writeparams-position" id="ref-for-dom-writeparams-position⑤">position</a></code>: <var>position</var> })
-     <dd data-md>
-      <p>Updates the current file cursor offset the <var>position</var> bytes from the top of the file.</p>
-     <dt data-md>await <var>stream</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemwritablefilestream-write" id="ref-for-dom-filesystemwritablefilestream-write⑦">write</a></code>({ <code class="idl"><a data-link-type="idl" href="#dom-writeparams-type" id="ref-for-dom-writeparams-type④">type</a></code>: <code class="idl"><a data-link-type="idl" href="#dom-writecommandtype-truncate" id="ref-for-dom-writecommandtype-truncate①">"truncate"</a></code>, <code class="idl"><a data-link-type="idl" href="#dom-writeparams-size" id="ref-for-dom-writeparams-size②">size</a></code>: <var>size</var> })
-     <dd data-md>
-      <p>Resizes the file associated with <var>stream</var> to be <var>size</var> bytes long. If <var>size</var> is larger than
- the current file size this pads the file with null bytes, otherwise it truncates the file.</p>
-      <p>The file cursor is updated when <code class="idl"><a data-link-type="idl" href="#dom-writecommandtype-truncate" id="ref-for-dom-writecommandtype-truncate②">truncate</a></code> is called. If the offset is smaller than <var>size</var>,
- it remains unchanged. If the offset is larger than <var>size</var>, the offset is set to <var>size</var> to
- ensure that subsequent writes do not error.</p>
-      <p>No changes are written to the actual file until on disk until the stream has been closed.
- Changes are typically written to a temporary file instead.</p>
-    </dl>
+      <p>Return <var>desc</var>’s <a data-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-permission-state" id="ref-for-dfn-permission-state⑤">permission state</a>.</p>
+    </ol>
    </div>
-   <div class="algorithm" data-algorithm="write(data)" data-algorithm-for="FileSystemWritableFileStream">
-     The <dfn class="dfn-paneled idl-code" data-dfn-for="FileSystemWritableFileStream" data-dfn-type="method" data-export id="dom-filesystemwritablefilestream-write"><code>write(<var>data</var>)</code></dfn> method, when invoked, must run
-these steps: 
+   <div class="algorithm" data-algorithm="requesting file system permission">
+     To <dfn class="dfn-paneled" data-dfn-type="dfn" data-lt="requesting file system permission|request file system permission" data-noexport id="requesting-file-system-permission">request file system permission</dfn> given a <code class="idl"><a data-link-type="idl" href="https://fs.spec.whatwg.org/#filesystemhandle" id="ref-for-filesystemhandle②">FileSystemHandle</a></code> <var>handle</var> and a <code class="idl"><a data-link-type="idl" href="#enumdef-filesystempermissionmode" id="ref-for-enumdef-filesystempermissionmode②">FileSystemPermissionMode</a></code> <var>mode</var>, run these steps: 
     <ol>
      <li data-md>
-      <p>Let <var>writer</var> be the result of <a data-link-type="dfn" href="https://streams.spec.whatwg.org/#writablestream-get-a-writer" id="ref-for-writablestream-get-a-writer">getting a writer</a> for <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this①⑧">this</a>.</p>
+      <p>Let <var>desc</var> be a <code class="idl"><a data-link-type="idl" href="#dictdef-filesystempermissiondescriptor" id="ref-for-dictdef-filesystempermissiondescriptor④">FileSystemPermissionDescriptor</a></code>.</p>
      <li data-md>
-      <p>Let <var>result</var> be the result of <a data-link-type="dfn" href="https://streams.spec.whatwg.org/#writablestreamdefaultwriter-write-a-chunk" id="ref-for-writablestreamdefaultwriter-write-a-chunk">writing a chunk</a> to <var>writer</var> given <var>data</var>.</p>
+      <p>Set <var>desc</var>.<code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissiondescriptor-name" id="ref-for-dom-permissiondescriptor-name①">name</a></code> to <code class="idl"><a data-link-type="idl" href="#dom-permissionname-file-system" id="ref-for-dom-permissionname-file-system①">"file-system"</a></code>.</p>
      <li data-md>
-      <p><a data-link-type="dfn" href="https://streams.spec.whatwg.org/#writablestreamdefaultwriter-release" id="ref-for-writablestreamdefaultwriter-release">Release</a> <var>writer</var>.</p>
+      <p>Set <var>desc</var>.<code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-handle" id="ref-for-dom-filesystempermissiondescriptor-handle⑤">handle</a></code> to <var>handle</var>.</p>
      <li data-md>
-      <p>Return <var>result</var>.</p>
+      <p>Set <var>desc</var>.<code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-mode" id="ref-for-dom-filesystempermissiondescriptor-mode④">mode</a></code> to <var>mode</var>.</p>
+     <li data-md>
+      <p>Let <var>status</var> be the result of running <a data-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-create-a-permissionstatus" id="ref-for-dfn-create-a-permissionstatus">create a PermissionStatus</a> for <var>desc</var>.</p>
+     <li data-md>
+      <p>Run the <a data-link-type="dfn" href="https://wicg.github.io/permissions-request/#permission-request-algorithm" id="ref-for-permission-request-algorithm①">permission request algorithm</a> for the <code class="idl"><a data-link-type="idl" href="#dom-permissionname-file-system" id="ref-for-dom-permissionname-file-system②">"file-system"</a></code> feature, given <var>desc</var> and <var>status</var>.</p>
+     <li data-md>
+      <p>Return <var>desc</var>’s <a data-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-permission-state" id="ref-for-dfn-permission-state⑥">permission state</a>.</p>
     </ol>
    </div>
-   <h4 class="heading settled" data-level="2.6.2" id="api-filesystemwritablefilestream-seek"><span class="secno">2.6.2. </span><span class="content">The <code class="idl"><a data-link-type="idl" href="#dom-filesystemwritablefilestream-seek" id="ref-for-dom-filesystemwritablefilestream-seek①">seek()</a></code> method</span><a class="self-link" href="#api-filesystemwritablefilestream-seek"></a></h4>
+   <p class="issue" id="issue-7fc2f5c7"><a class="self-link" href="#issue-7fc2f5c7"></a> Currently <code class="idl"><a data-link-type="idl" href="#enumdef-filesystempermissionmode" id="ref-for-enumdef-filesystempermissionmode③">FileSystemPermissionMode</a></code> can only be <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-read" id="ref-for-dom-filesystempermissionmode-read①">"read"</a></code> or <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-readwrite" id="ref-for-dom-filesystempermissionmode-readwrite①">"readwrite"</a></code>. In
+the future we might want to add a "write" mode as well to support write-only handles. <a href="https://github.com/wicg/file-system-access/issues/119">[Issue #119]</a></p>
+   <h3 class="heading settled" data-level="2.3" id="api-filesystemhandle"><span class="secno">2.3. </span><span class="content">The <code class="idl"><a data-link-type="idl" href="https://fs.spec.whatwg.org/#filesystemhandle" id="ref-for-filesystemhandle③">FileSystemHandle</a></code> interface</span><a class="self-link" href="#api-filesystemhandle"></a></h3>
+<pre class="idl highlight def"><c- b>dictionary</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="dictionary" data-export id="dictdef-filesystemhandlepermissiondescriptor"><code><c- g>FileSystemHandlePermissionDescriptor</c-></code></dfn> {
+  <a data-link-type="idl-name" href="#enumdef-filesystempermissionmode" id="ref-for-enumdef-filesystempermissionmode④"><c- n>FileSystemPermissionMode</c-></a> <dfn class="dfn-paneled idl-code" data-default="&quot;read&quot;" data-dfn-for="FileSystemHandlePermissionDescriptor" data-dfn-type="dict-member" data-export data-type="FileSystemPermissionMode " id="dom-filesystemhandlepermissiondescriptor-mode"><code><c- g>mode</c-></code></dfn> = "read";
+};
+
+[<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#Exposed" id="ref-for-Exposed"><c- g>Exposed</c-></a>=(<c- n>Window</c->,<c- n>Worker</c->), <a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#SecureContext" id="ref-for-SecureContext"><c- g>SecureContext</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/structured-data.html#serializable" id="ref-for-serializable"><c- g>Serializable</c-></a>]
+<c- b>partial</c-> <c- b>interface</c-> <a class="idl-code" data-link-type="interface" href="https://fs.spec.whatwg.org/#filesystemhandle" id="ref-for-filesystemhandle④"><c- g>FileSystemHandle</c-></a> {
+  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="https://w3c.github.io/permissions/#dom-permissionstate" id="ref-for-dom-permissionstate"><c- n>PermissionState</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-filesystemhandle-querypermission" id="ref-for-dom-filesystemhandle-querypermission"><c- g>queryPermission</c-></a>(<c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-filesystemhandlepermissiondescriptor" id="ref-for-dictdef-filesystemhandlepermissiondescriptor"><c- n>FileSystemHandlePermissionDescriptor</c-></a> <dfn class="idl-code" data-dfn-for="FileSystemHandle/queryPermission(descriptor), FileSystemHandle/queryPermission()" data-dfn-type="argument" data-export id="dom-filesystemhandle-querypermission-descriptor-descriptor"><code><c- g>descriptor</c-></code><a class="self-link" href="#dom-filesystemhandle-querypermission-descriptor-descriptor"></a></dfn> = {});
+  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise①"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="https://w3c.github.io/permissions/#dom-permissionstate" id="ref-for-dom-permissionstate①"><c- n>PermissionState</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-filesystemhandle-requestpermission" id="ref-for-dom-filesystemhandle-requestpermission"><c- g>requestPermission</c-></a>(<c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-filesystemhandlepermissiondescriptor" id="ref-for-dictdef-filesystemhandlepermissiondescriptor①"><c- n>FileSystemHandlePermissionDescriptor</c-></a> <dfn class="idl-code" data-dfn-for="FileSystemHandle/requestPermission(descriptor), FileSystemHandle/requestPermission()" data-dfn-type="argument" data-export id="dom-filesystemhandle-requestpermission-descriptor-descriptor"><code><c- g>descriptor</c-></code><a class="self-link" href="#dom-filesystemhandle-requestpermission-descriptor-descriptor"></a></dfn> = {});
+};
+</pre>
+   <h4 class="heading settled" data-level="2.3.1" id="api-filesystemhandle-querypermission"><span class="secno">2.3.1. </span><span class="content">The <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandle-querypermission" id="ref-for-dom-filesystemhandle-querypermission①">queryPermission()</a></code> method</span><a class="self-link" href="#api-filesystemhandle-querypermission"></a></h4>
+   <div class="mdn-anno wrapped after">
+    <button class="mdn-anno-btn"><b class="less-than-two-engines-flag" title="This feature is in less than two current engines.">⚠</b><span>MDN</span></button>
+    <div class="feature">
+     <p><a href="https://developer.mozilla.org/en-US/docs/Web/API/FileSystemHandle/queryPermission" title="The queryPermission() method of the FileSystemHandle interface queries the current permission state of the current handle.">FileSystemHandle/queryPermission</a></p>
+     <p class="less-than-two-engines-text">In only one current engine.</p>
+     <div class="support">
+      <span class="firefox no"><span>Firefox</span><span>None</span></span><span class="safari no"><span>Safari</span><span>None</span></span><span class="chrome yes"><span>Chrome</span><span>86+</span></span>
+      <hr>
+      <span class="opera no"><span>Opera</span><span>?</span></span><span class="edge_blink yes"><span>Edge</span><span>86+</span></span>
+      <hr>
+      <span class="edge no"><span>Edge (Legacy)</span><span>?</span></span><span class="ie no"><span>IE</span><span>None</span></span>
+      <hr>
+      <span class="firefox_android no"><span>Firefox for Android</span><span>?</span></span><span class="safari_ios no"><span>iOS Safari</span><span>?</span></span><span class="chrome_android no"><span>Chrome for Android</span><span>?</span></span><span class="webview_android no"><span>Android WebView</span><span>None</span></span><span class="samsunginternet_android no"><span>Samsung Internet</span><span>?</span></span><span class="opera_android no"><span>Opera Mobile</span><span>None</span></span>
+     </div>
+    </div>
+   </div>
    <div class="note domintro" role="note">
     <dl>
-     <dt data-md>await <var>stream</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemwritablefilestream-seek" id="ref-for-dom-filesystemwritablefilestream-seek②">seek</a></code>(<var>position</var>)
+     <dt data-md><var>status</var> = await <var>handle</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandle-querypermission" id="ref-for-dom-filesystemhandle-querypermission②">queryPermission</a></code>({ <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandlepermissiondescriptor-mode" id="ref-for-dom-filesystemhandlepermissiondescriptor-mode">mode</a></code> : <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-read" id="ref-for-dom-filesystempermissionmode-read②">"read"</a></code> })
+     <dt data-md><var>status</var> = await <var>handle</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandle-querypermission" id="ref-for-dom-filesystemhandle-querypermission③">queryPermission()</a></code>
+     <dt data-md><var>status</var> = (await navigator.<code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-navigator-permissions" id="ref-for-dom-navigator-permissions">permissions</a></code>.<code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissions-query" id="ref-for-dom-permissions-query">query</a></code>({ <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissiondescriptor-name" id="ref-for-dom-permissiondescriptor-name②">name</a></code> : "file-system", <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-handle" id="ref-for-dom-filesystempermissiondescriptor-handle⑥">handle</a></code> : <var>handle</var> })).<code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissionstatus-state" id="ref-for-dom-permissionstatus-state①">state</a></code>
+     <dd data-md>
+      <p>Queries the current state of the read permission of this handle. If this returns <code>"prompt"</code> the website will have to call <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandle-requestpermission" id="ref-for-dom-filesystemhandle-requestpermission①">requestPermission()</a></code> before any
+ operations on the handle can be done. If this returns <code>"denied"</code> any operations will reject.</p>
+      <p>Usually handles returned by the <a data-link-type="dfn" href="#local-file-system-handle-factories" id="ref-for-local-file-system-handle-factories">local file system handle factories</a> will initially return <code>"granted"</code> for
+ their read permission state, however other than through the user revoking permission, a handle
+ retrieved from IndexedDB is also likely to return <code>"prompt"</code>.</p>
+     <dt data-md><var>status</var> = await <var>handle</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandle-querypermission" id="ref-for-dom-filesystemhandle-querypermission④">queryPermission</a></code>({ <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandlepermissiondescriptor-mode" id="ref-for-dom-filesystemhandlepermissiondescriptor-mode①">mode</a></code> : <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-readwrite" id="ref-for-dom-filesystempermissionmode-readwrite②">"readwrite"</a></code> })
+     <dt data-md><var>status</var> = (await navigator.<code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-navigator-permissions" id="ref-for-dom-navigator-permissions①">permissions</a></code>.<code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissions-query" id="ref-for-dom-permissions-query①">query</a></code>({ <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissiondescriptor-name" id="ref-for-dom-permissiondescriptor-name③">name</a></code> : "file-system", <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-handle" id="ref-for-dom-filesystempermissiondescriptor-handle⑦">handle</a></code> : <var>handle</var>, <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-mode" id="ref-for-dom-filesystempermissiondescriptor-mode⑤">mode</a></code> : <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-readwrite" id="ref-for-dom-filesystempermissionmode-readwrite③">"readwrite"</a></code>}).<code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissionstatus-state" id="ref-for-dom-permissionstatus-state②">state</a></code>
      <dd data-md>
-      <p>Updates the current file cursor offset the <var>position</var> bytes from the top of the file.</p>
+      <p>Queries the current state of the write permission of this handle. If this returns <code>"prompt"</code>,
+ attempting to modify the file or directory this handle represents will require user activation
+ and will result in a confirmation prompt being shown to the user. However if the state of the
+ read permission of this handle is also <code>"prompt"</code> the website will need to call <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandle-requestpermission" id="ref-for-dom-filesystemhandle-requestpermission②">requestPermission()</a></code>. There is no automatic prompting for read access when
+ attempting to read from a file or directory.</p>
     </dl>
    </div>
-   <div class="algorithm" data-algorithm="seek(position)" data-algorithm-for="FileSystemWritableFileStream">
-     The <dfn class="dfn-paneled idl-code" data-dfn-for="FileSystemWritableFileStream" data-dfn-type="method" data-export id="dom-filesystemwritablefilestream-seek"><code>seek(<var>position</var>)</code></dfn> method, when invoked, must run these
-steps: 
+   <p><strong class="advisement"> The integration with the permissions API’s <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissions-query" id="ref-for-dom-permissions-query②">query()</a></code> method is not yet implemented in Chrome.</strong></p>
+   <div class="algorithm" data-algorithm="queryPermission(descriptor)" data-algorithm-for="FileSystemHandle">
+     The <dfn class="dfn-paneled idl-code" data-dfn-for="FileSystemHandle" data-dfn-type="method" data-export data-lt="queryPermission(descriptor)|queryPermission()" id="dom-filesystemhandle-querypermission"><code>queryPermission(<var>descriptor</var>)</code></dfn> method, when invoked, must run these steps: 
     <ol>
      <li data-md>
-      <p>Let <var>writer</var> be the result of <a data-link-type="dfn" href="https://streams.spec.whatwg.org/#writablestream-get-a-writer" id="ref-for-writablestream-get-a-writer①">getting a writer</a> for <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this①⑨">this</a>.</p>
-     <li data-md>
-      <p>Let <var>result</var> be the result of <a data-link-type="dfn" href="https://streams.spec.whatwg.org/#writablestreamdefaultwriter-write-a-chunk" id="ref-for-writablestreamdefaultwriter-write-a-chunk①">writing a chunk</a> to <var>writer</var> given
-  «[ "<code class="idl"><a data-link-type="idl" href="#dom-writeparams-type" id="ref-for-dom-writeparams-type⑤">type</a></code>" → <code class="idl"><a data-link-type="idl" href="#dom-writecommandtype-seek" id="ref-for-dom-writecommandtype-seek②">"seek"</a></code>, "<code class="idl"><a data-link-type="idl" href="#dom-writeparams-position" id="ref-for-dom-writeparams-position⑥">position</a></code>" → <var>position</var> ]».</p>
+      <p>Let <var>result</var> be <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-new-promise" id="ref-for-a-new-promise">a new promise</a>.</p>
      <li data-md>
-      <p><a data-link-type="dfn" href="https://streams.spec.whatwg.org/#writablestreamdefaultwriter-release" id="ref-for-writablestreamdefaultwriter-release①">Release</a> <var>writer</var>.</p>
+      <p>Run the following steps <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel" id="ref-for-in-parallel">in parallel</a>:</p>
+      <ol>
+       <li data-md>
+        <p>Let <var>state</var> be the result of <a data-link-type="dfn" href="#querying-file-system-permission" id="ref-for-querying-file-system-permission">querying file system permission</a> given <b><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this">this</a></b> and <var>descriptor</var>.<code class="idl"><a data-link-type="idl" href="#dom-filesystemhandlepermissiondescriptor-mode" id="ref-for-dom-filesystemhandlepermissiondescriptor-mode②">mode</a></code>.</p>
+       <li data-md>
+        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve">Resolve</a> <var>result</var> with <var>state</var>.</p>
+      </ol>
      <li data-md>
       <p>Return <var>result</var>.</p>
     </ol>
    </div>
-   <h4 class="heading settled" data-level="2.6.3" id="api-filesystemwritablefilestream-truncate"><span class="secno">2.6.3. </span><span class="content">The <code class="idl"><a data-link-type="idl" href="#dom-filesystemwritablefilestream-truncate" id="ref-for-dom-filesystemwritablefilestream-truncate①">truncate()</a></code> method</span><a class="self-link" href="#api-filesystemwritablefilestream-truncate"></a></h4>
+   <h4 class="heading settled" data-level="2.3.2" id="api-filesystemhandle-requestpermission"><span class="secno">2.3.2. </span><span class="content">The <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandle-requestpermission" id="ref-for-dom-filesystemhandle-requestpermission③">requestPermission()</a></code> method</span><a class="self-link" href="#api-filesystemhandle-requestpermission"></a></h4>
+   <div class="mdn-anno wrapped after">
+    <button class="mdn-anno-btn"><b class="less-than-two-engines-flag" title="This feature is in less than two current engines.">⚠</b><span>MDN</span></button>
+    <div class="feature">
+     <p><a href="https://developer.mozilla.org/en-US/docs/Web/API/FileSystemHandle/requestPermission" title="The requestPermission() method of the FileSystemHandle interface requests read or readwrite permissions for the file handle.">FileSystemHandle/requestPermission</a></p>
+     <p class="less-than-two-engines-text">In only one current engine.</p>
+     <div class="support">
+      <span class="firefox no"><span>Firefox</span><span>None</span></span><span class="safari no"><span>Safari</span><span>None</span></span><span class="chrome yes"><span>Chrome</span><span>86+</span></span>
+      <hr>
+      <span class="opera no"><span>Opera</span><span>?</span></span><span class="edge_blink yes"><span>Edge</span><span>86+</span></span>
+      <hr>
+      <span class="edge no"><span>Edge (Legacy)</span><span>?</span></span><span class="ie no"><span>IE</span><span>None</span></span>
+      <hr>
+      <span class="firefox_android no"><span>Firefox for Android</span><span>?</span></span><span class="safari_ios no"><span>iOS Safari</span><span>?</span></span><span class="chrome_android no"><span>Chrome for Android</span><span>?</span></span><span class="webview_android no"><span>Android WebView</span><span>None</span></span><span class="samsunginternet_android no"><span>Samsung Internet</span><span>?</span></span><span class="opera_android no"><span>Opera Mobile</span><span>None</span></span>
+     </div>
+    </div>
+   </div>
    <div class="note domintro" role="note">
     <dl>
-     <dt data-md>await <var>stream</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemwritablefilestream-truncate" id="ref-for-dom-filesystemwritablefilestream-truncate②">truncate</a></code>(<var>size</var>)
+     <dt data-md><var>status</var> = await <var>handle</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandle-requestpermission" id="ref-for-dom-filesystemhandle-requestpermission④">requestPermission</a></code>({ <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandlepermissiondescriptor-mode" id="ref-for-dom-filesystemhandlepermissiondescriptor-mode③">mode</a></code> : <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-read" id="ref-for-dom-filesystempermissionmode-read③">"read"</a></code> })
+     <dt data-md><var>status</var> = await <var>handle</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandle-requestpermission" id="ref-for-dom-filesystemhandle-requestpermission⑤">requestPermission()</a></code>
+     <dd data-md>
+      <p>If the state of the read permission of this handle is anything other than <code>"prompt"</code>, this
+ will return that state directly. If it is <code>"prompt"</code> however, user activation is needed and
+ this will show a confirmation prompt to the user. The new read permission state is then
+ returned, depending on the user’s response to the prompt.</p>
+     <dt data-md><var>status</var> = await <var>handle</var> . <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandle-requestpermission" id="ref-for-dom-filesystemhandle-requestpermission⑥">requestPermission</a></code>({ <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandlepermissiondescriptor-mode" id="ref-for-dom-filesystemhandlepermissiondescriptor-mode④">mode</a></code> : <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-readwrite" id="ref-for-dom-filesystempermissionmode-readwrite④">"readwrite"</a></code> })
      <dd data-md>
-      <p>Resizes the file associated with <var>stream</var> to be <var>size</var> bytes long. If <var>size</var> is larger than
- the current file size this pads the file with null bytes, otherwise it truncates the file.</p>
-      <p>The file cursor is updated when <code class="idl"><a data-link-type="idl" href="#dom-writecommandtype-truncate" id="ref-for-dom-writecommandtype-truncate③">truncate</a></code> is called. If the offset is smaller than <var>size</var>,
- it remains unchanged. If the offset is larger than <var>size</var>, the offset is set to <var>size</var> to
- ensure that subsequent writes do not error.</p>
-      <p>No changes are written to the actual file until on disk until the stream has been closed.
- Changes are typically written to a temporary file instead.</p>
+      <p>If the state of the write permission of this handle is anything other than <code>"prompt"</code>, this
+ will return that state directly. If the status of the read permission of this handle is <code>"denied"</code> this will return that.</p>
+      <p>Otherwise the state of the write permission is <code>"prompt"</code> and this will show a confirmation
+ prompt to the user. The new write permission state is then returned, depending on what the user
+ selected.</p>
     </dl>
    </div>
-   <div class="algorithm" data-algorithm="truncate(size)" data-algorithm-for="FileSystemWritableFileStream">
-     The <dfn class="dfn-paneled idl-code" data-dfn-for="FileSystemWritableFileStream" data-dfn-type="method" data-export id="dom-filesystemwritablefilestream-truncate"><code>truncate(<var>size</var>)</code></dfn> method, when invoked, must run these
-steps: 
+   <div class="algorithm" data-algorithm="requestPermission(descriptor)" data-algorithm-for="FileSystemHandle">
+     The <dfn class="dfn-paneled idl-code" data-dfn-for="FileSystemHandle" data-dfn-type="method" data-export data-lt="requestPermission(descriptor)|requestPermission()" id="dom-filesystemhandle-requestpermission"><code>requestPermission(<var>descriptor</var>)</code></dfn> method, when invoked, must run these steps: 
     <ol>
      <li data-md>
-      <p>Let <var>writer</var> be the result of <a data-link-type="dfn" href="https://streams.spec.whatwg.org/#writablestream-get-a-writer" id="ref-for-writablestream-get-a-writer②">getting a writer</a> for <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this②⓪">this</a>.</p>
+      <p>Let <var>result</var> be <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-new-promise" id="ref-for-a-new-promise①">a new promise</a>.</p>
      <li data-md>
-      <p>Let <var>result</var> be the result of <a data-link-type="dfn" href="https://streams.spec.whatwg.org/#writablestreamdefaultwriter-write-a-chunk" id="ref-for-writablestreamdefaultwriter-write-a-chunk②">writing a chunk</a> to <var>writer</var> given
-  «[ "<code class="idl"><a data-link-type="idl" href="#dom-writeparams-type" id="ref-for-dom-writeparams-type⑥">type</a></code>" → <code class="idl"><a data-link-type="idl" href="#dom-writecommandtype-truncate" id="ref-for-dom-writecommandtype-truncate④">"truncate"</a></code>, "<code class="idl"><a data-link-type="idl" href="#dom-writeparams-size" id="ref-for-dom-writeparams-size③">size</a></code>" → <var>size</var> ]».</p>
-     <li data-md>
-      <p><a data-link-type="dfn" href="https://streams.spec.whatwg.org/#writablestreamdefaultwriter-release" id="ref-for-writablestreamdefaultwriter-release②">Release</a> <var>writer</var>.</p>
+      <p>Run the following steps <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel" id="ref-for-in-parallel①">in parallel</a>:</p>
+      <ol>
+       <li data-md>
+        <p>Let <var>state</var> be the result of <a data-link-type="dfn" href="#requesting-file-system-permission" id="ref-for-requesting-file-system-permission">requesting file system permission</a> given <b><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this①">this</a></b> and <var>descriptor</var>.<code class="idl"><a data-link-type="idl" href="#dom-filesystemhandlepermissiondescriptor-mode" id="ref-for-dom-filesystemhandlepermissiondescriptor-mode⑤">mode</a></code>.
+ If that throws an exception, <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject">reject</a> <var>result</var> with that exception and abort.</p>
+       <li data-md>
+        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve①">Resolve</a> <var>result</var> with <var>state</var>.</p>
+      </ol>
      <li data-md>
       <p>Return <var>result</var>.</p>
     </ol>
@@ -2249,26 +1211,26 @@ <h2 class="heading settled" data-level="3" id="local-filesystem"><span class="se
   <a class="idl-code" data-link-type="enum-value" href="#dom-wellknowndirectory-videos" id="ref-for-dom-wellknowndirectory-videos"><c- s>"videos"</c-></a>,
 };
 
-<c- b>typedef</c-> (<a data-link-type="idl-name" href="#enumdef-wellknowndirectory" id="ref-for-enumdef-wellknowndirectory①"><c- n>WellKnownDirectory</c-></a> <c- b>or</c-> <a data-link-type="idl-name" href="#filesystemhandle" id="ref-for-filesystemhandle①⑤"><c- n>FileSystemHandle</c-></a>) <dfn class="dfn-paneled idl-code" data-dfn-type="typedef" data-export id="typedefdef-startindirectory"><code><c- g>StartInDirectory</c-></code></dfn>;
+<c- b>typedef</c-> (<a data-link-type="idl-name" href="#enumdef-wellknowndirectory" id="ref-for-enumdef-wellknowndirectory①"><c- n>WellKnownDirectory</c-></a> <c- b>or</c-> <a data-link-type="idl-name" href="https://fs.spec.whatwg.org/#filesystemhandle" id="ref-for-filesystemhandle⑤"><c- n>FileSystemHandle</c-></a>) <dfn class="dfn-paneled idl-code" data-dfn-type="typedef" data-export id="typedefdef-startindirectory"><code><c- g>StartInDirectory</c-></code></dfn>;
 
 <c- b>dictionary</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="dictionary" data-export id="dictdef-filepickeraccepttype"><code><c- g>FilePickerAcceptType</c-></code></dfn> {
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString" id="ref-for-idl-USVString⑨"><c- b>USVString</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="FilePickerAcceptType" data-dfn-type="dict-member" data-export data-type="USVString " id="dom-filepickeraccepttype-description"><code><c- g>description</c-></code></dfn>;
-    <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#idl-record" id="ref-for-idl-record"><c- b>record</c-></a>&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString" id="ref-for-idl-USVString①⓪"><c- b>USVString</c-></a>, (<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString" id="ref-for-idl-USVString①①"><c- b>USVString</c-></a> <c- b>or</c-> <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#idl-sequence" id="ref-for-idl-sequence①"><c- b>sequence</c-></a>&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString" id="ref-for-idl-USVString①②"><c- b>USVString</c-></a>>)> <dfn class="dfn-paneled idl-code" data-dfn-for="FilePickerAcceptType" data-dfn-type="dict-member" data-export data-type="record<USVString, (USVString or sequence<USVString>)> " id="dom-filepickeraccepttype-accept"><code><c- g>accept</c-></code></dfn>;
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString" id="ref-for-idl-USVString"><c- b>USVString</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="FilePickerAcceptType" data-dfn-type="dict-member" data-export data-type="USVString " id="dom-filepickeraccepttype-description"><code><c- g>description</c-></code></dfn>;
+    <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#idl-record" id="ref-for-idl-record"><c- b>record</c-></a>&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString" id="ref-for-idl-USVString①"><c- b>USVString</c-></a>, (<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString" id="ref-for-idl-USVString②"><c- b>USVString</c-></a> <c- b>or</c-> <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#idl-sequence" id="ref-for-idl-sequence"><c- b>sequence</c-></a>&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString" id="ref-for-idl-USVString③"><c- b>USVString</c-></a>>)> <dfn class="dfn-paneled idl-code" data-dfn-for="FilePickerAcceptType" data-dfn-type="dict-member" data-export data-type="record<USVString, (USVString or sequence<USVString>)> " id="dom-filepickeraccepttype-accept"><code><c- g>accept</c-></code></dfn>;
 };
 
 <c- b>dictionary</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="dictionary" data-export id="dictdef-filepickeroptions"><code><c- g>FilePickerOptions</c-></code></dfn> {
-    <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#idl-sequence" id="ref-for-idl-sequence②"><c- b>sequence</c-></a>&lt;<a data-link-type="idl-name" href="#dictdef-filepickeraccepttype" id="ref-for-dictdef-filepickeraccepttype"><c- n>FilePickerAcceptType</c-></a>> <dfn class="dfn-paneled idl-code" data-dfn-for="FilePickerOptions" data-dfn-type="dict-member" data-export data-type="sequence<FilePickerAcceptType> " id="dom-filepickeroptions-types"><code><c- g>types</c-></code></dfn>;
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-boolean" id="ref-for-idl-boolean⑤"><c- b>boolean</c-></a> <dfn class="dfn-paneled idl-code" data-default="false" data-dfn-for="FilePickerOptions" data-dfn-type="dict-member" data-export data-type="boolean " id="dom-filepickeroptions-excludeacceptalloption"><code><c- g>excludeAcceptAllOption</c-></code></dfn> = <c- b>false</c->;
+    <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#idl-sequence" id="ref-for-idl-sequence①"><c- b>sequence</c-></a>&lt;<a data-link-type="idl-name" href="#dictdef-filepickeraccepttype" id="ref-for-dictdef-filepickeraccepttype"><c- n>FilePickerAcceptType</c-></a>> <dfn class="dfn-paneled idl-code" data-dfn-for="FilePickerOptions" data-dfn-type="dict-member" data-export data-type="sequence<FilePickerAcceptType> " id="dom-filepickeroptions-types"><code><c- g>types</c-></code></dfn>;
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-boolean" id="ref-for-idl-boolean"><c- b>boolean</c-></a> <dfn class="dfn-paneled idl-code" data-default="false" data-dfn-for="FilePickerOptions" data-dfn-type="dict-member" data-export data-type="boolean " id="dom-filepickeroptions-excludeacceptalloption"><code><c- g>excludeAcceptAllOption</c-></code></dfn> = <c- b>false</c->;
     <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString"><c- b>DOMString</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="FilePickerOptions" data-dfn-type="dict-member" data-export data-type="DOMString " id="dom-filepickeroptions-id"><code><c- g>id</c-></code></dfn>;
     <a data-link-type="idl-name" href="#typedefdef-startindirectory" id="ref-for-typedefdef-startindirectory"><c- n>StartInDirectory</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="FilePickerOptions" data-dfn-type="dict-member" data-export data-type="StartInDirectory " id="dom-filepickeroptions-startin"><code><c- g>startIn</c-></code></dfn>;
 };
 
 <c- b>dictionary</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="dictionary" data-export id="dictdef-openfilepickeroptions"><code><c- g>OpenFilePickerOptions</c-></code></dfn> : <a data-link-type="idl-name" href="#dictdef-filepickeroptions" id="ref-for-dictdef-filepickeroptions"><c- n>FilePickerOptions</c-></a> {
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-boolean" id="ref-for-idl-boolean⑥"><c- b>boolean</c-></a> <dfn class="dfn-paneled idl-code" data-default="false" data-dfn-for="OpenFilePickerOptions" data-dfn-type="dict-member" data-export data-type="boolean " id="dom-openfilepickeroptions-multiple"><code><c- g>multiple</c-></code></dfn> = <c- b>false</c->;
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-boolean" id="ref-for-idl-boolean①"><c- b>boolean</c-></a> <dfn class="dfn-paneled idl-code" data-default="false" data-dfn-for="OpenFilePickerOptions" data-dfn-type="dict-member" data-export data-type="boolean " id="dom-openfilepickeroptions-multiple"><code><c- g>multiple</c-></code></dfn> = <c- b>false</c->;
 };
 
 <c- b>dictionary</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="dictionary" data-export id="dictdef-savefilepickeroptions"><code><c- g>SaveFilePickerOptions</c-></code></dfn> : <a data-link-type="idl-name" href="#dictdef-filepickeroptions" id="ref-for-dictdef-filepickeroptions①"><c- n>FilePickerOptions</c-></a> {
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString" id="ref-for-idl-USVString①③"><c- b>USVString</c-></a>? <dfn class="dfn-paneled idl-code" data-dfn-for="SaveFilePickerOptions" data-dfn-type="dict-member" data-export data-type="USVString? " id="dom-savefilepickeroptions-suggestedname"><code><c- g>suggestedName</c-></code></dfn>;
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString" id="ref-for-idl-USVString④"><c- b>USVString</c-></a>? <dfn class="dfn-paneled idl-code" data-dfn-for="SaveFilePickerOptions" data-dfn-type="dict-member" data-export data-type="USVString? " id="dom-savefilepickeroptions-suggestedname"><code><c- g>suggestedName</c-></code></dfn>;
 };
 
 <c- b>dictionary</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="dictionary" data-export id="dictdef-directorypickeroptions"><code><c- g>DirectoryPickerOptions</c-></code></dfn> {
@@ -2277,11 +1239,11 @@ <h2 class="heading settled" data-level="3" id="local-filesystem"><span class="se
     <a data-link-type="idl-name" href="#enumdef-filesystempermissionmode" id="ref-for-enumdef-filesystempermissionmode⑤"><c- n>FileSystemPermissionMode</c-></a> <dfn class="dfn-paneled idl-code" data-default="&quot;read&quot;" data-dfn-for="DirectoryPickerOptions" data-dfn-type="dict-member" data-export data-type="FileSystemPermissionMode " id="dom-directorypickeroptions-mode"><code><c- g>mode</c-></code></dfn> = "read";
 };
 
-[<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#SecureContext" id="ref-for-SecureContext④"><c- g>SecureContext</c-></a>]
+[<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#SecureContext" id="ref-for-SecureContext①"><c- g>SecureContext</c-></a>]
 <c- b>partial</c-> <c- b>interface</c-> <a class="idl-code" data-link-type="interface" href="https://html.spec.whatwg.org/multipage/nav-history-apis.html#window" id="ref-for-window①"><c- g>Window</c-></a> {
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise①②"><c- b>Promise</c-></a>&lt;<a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#idl-sequence" id="ref-for-idl-sequence③"><c- b>sequence</c-></a>&lt;<a data-link-type="idl-name" href="#filesystemfilehandle" id="ref-for-filesystemfilehandle⑧"><c- n>FileSystemFileHandle</c-></a>>> <a class="idl-code" data-link-type="method" href="#dom-window-showopenfilepicker" id="ref-for-dom-window-showopenfilepicker"><c- g>showOpenFilePicker</c-></a>(<c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-openfilepickeroptions" id="ref-for-dictdef-openfilepickeroptions"><c- n>OpenFilePickerOptions</c-></a> <dfn class="idl-code" data-dfn-for="Window/showOpenFilePicker(options), Window/showOpenFilePicker()" data-dfn-type="argument" data-export id="dom-window-showopenfilepicker-options-options"><code><c- g>options</c-></code><a class="self-link" href="#dom-window-showopenfilepicker-options-options"></a></dfn> = {});
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise①③"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="#filesystemfilehandle" id="ref-for-filesystemfilehandle⑨"><c- n>FileSystemFileHandle</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-window-showsavefilepicker" id="ref-for-dom-window-showsavefilepicker"><c- g>showSaveFilePicker</c-></a>(<c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-savefilepickeroptions" id="ref-for-dictdef-savefilepickeroptions"><c- n>SaveFilePickerOptions</c-></a> <dfn class="idl-code" data-dfn-for="Window/showSaveFilePicker(options), Window/showSaveFilePicker()" data-dfn-type="argument" data-export id="dom-window-showsavefilepicker-options-options"><code><c- g>options</c-></code><a class="self-link" href="#dom-window-showsavefilepicker-options-options"></a></dfn> = {});
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise①④"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="#filesystemdirectoryhandle" id="ref-for-filesystemdirectoryhandle①⓪"><c- n>FileSystemDirectoryHandle</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-window-showdirectorypicker" id="ref-for-dom-window-showdirectorypicker"><c- g>showDirectoryPicker</c-></a>(<c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-directorypickeroptions" id="ref-for-dictdef-directorypickeroptions"><c- n>DirectoryPickerOptions</c-></a> <dfn class="idl-code" data-dfn-for="Window/showDirectoryPicker(options), Window/showDirectoryPicker()" data-dfn-type="argument" data-export id="dom-window-showdirectorypicker-options-options"><code><c- g>options</c-></code><a class="self-link" href="#dom-window-showdirectorypicker-options-options"></a></dfn> = {});
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise②"><c- b>Promise</c-></a>&lt;<a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#idl-sequence" id="ref-for-idl-sequence②"><c- b>sequence</c-></a>&lt;<a data-link-type="idl-name" href="https://fs.spec.whatwg.org/#filesystemfilehandle" id="ref-for-filesystemfilehandle"><c- n>FileSystemFileHandle</c-></a>>> <a class="idl-code" data-link-type="method" href="#dom-window-showopenfilepicker" id="ref-for-dom-window-showopenfilepicker"><c- g>showOpenFilePicker</c-></a>(<c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-openfilepickeroptions" id="ref-for-dictdef-openfilepickeroptions"><c- n>OpenFilePickerOptions</c-></a> <dfn class="idl-code" data-dfn-for="Window/showOpenFilePicker(options), Window/showOpenFilePicker()" data-dfn-type="argument" data-export id="dom-window-showopenfilepicker-options-options"><code><c- g>options</c-></code><a class="self-link" href="#dom-window-showopenfilepicker-options-options"></a></dfn> = {});
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise③"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="https://fs.spec.whatwg.org/#filesystemfilehandle" id="ref-for-filesystemfilehandle①"><c- n>FileSystemFileHandle</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-window-showsavefilepicker" id="ref-for-dom-window-showsavefilepicker"><c- g>showSaveFilePicker</c-></a>(<c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-savefilepickeroptions" id="ref-for-dictdef-savefilepickeroptions"><c- n>SaveFilePickerOptions</c-></a> <dfn class="idl-code" data-dfn-for="Window/showSaveFilePicker(options), Window/showSaveFilePicker()" data-dfn-type="argument" data-export id="dom-window-showsavefilepicker-options-options"><code><c- g>options</c-></code><a class="self-link" href="#dom-window-showsavefilepicker-options-options"></a></dfn> = {});
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise④"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="https://fs.spec.whatwg.org/#filesystemdirectoryhandle" id="ref-for-filesystemdirectoryhandle"><c- n>FileSystemDirectoryHandle</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-window-showdirectorypicker" id="ref-for-dom-window-showdirectorypicker"><c- g>showDirectoryPicker</c-></a>(<c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-directorypickeroptions" id="ref-for-dictdef-directorypickeroptions"><c- n>DirectoryPickerOptions</c-></a> <dfn class="idl-code" data-dfn-for="Window/showDirectoryPicker(options), Window/showDirectoryPicker()" data-dfn-type="argument" data-export id="dom-window-showdirectorypicker-options-options"><code><c- g>options</c-></code><a class="self-link" href="#dom-window-showdirectorypicker-options-options"></a></dfn> = {});
 };
 </pre>
    <p>The <code class="idl"><a data-link-type="idl" href="#dom-window-showopenfilepicker" id="ref-for-dom-window-showopenfilepicker①">showOpenFilePicker()</a></code>, <code class="idl"><a data-link-type="idl" href="#dom-window-showsavefilepicker" id="ref-for-dom-window-showsavefilepicker①">showSaveFilePicker()</a></code> and <code class="idl"><a data-link-type="idl" href="#dom-window-showdirectorypicker" id="ref-for-dom-window-showdirectorypicker①">showDirectoryPicker()</a></code> methods
@@ -2292,21 +1254,21 @@ <h2 class="heading settled" data-level="3" id="local-filesystem"><span class="se
 file pickers will also let you pick files and directories on Google Drive.</p>
    <p><strong class="advisement"> In Chrome versions earlier than 85, this was implemented as a generic <code>chooseFileSystemEntries</code> method.</strong></p>
    <h3 class="heading settled" data-level="3.1" id="local-file-system-permissions"><span class="secno">3.1. </span><span class="content">Local File System Permissions</span><a class="self-link" href="#local-file-system-permissions"></a></h3>
-   <p>The fact that the user picked the specific files returned by the <a data-link-type="dfn" href="#local-file-system-handle-factories" id="ref-for-local-file-system-handle-factories②">local file system handle factories</a> in a prompt
+   <p>The fact that the user picked the specific files returned by the <a data-link-type="dfn" href="#local-file-system-handle-factories" id="ref-for-local-file-system-handle-factories①">local file system handle factories</a> in a prompt
 should be treated by the user agent as the user intending to grant read access to the website
-for the returned files. As such, at the time the promise returned by one of the <a data-link-type="dfn" href="#local-file-system-handle-factories" id="ref-for-local-file-system-handle-factories③">local file system handle factories</a> resolves, <a data-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-permission-state" id="ref-for-dfn-permission-state⑨">permission state</a> for a descriptor with <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-handle" id="ref-for-dom-filesystempermissiondescriptor-handle①⓪">handle</a></code> set to the returned handle,
-and <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-mode" id="ref-for-dom-filesystempermissiondescriptor-mode⑧">mode</a></code> set to <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-read" id="ref-for-dom-filesystempermissionmode-read⑨">"read"</a></code> should be <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissionstate-granted" id="ref-for-dom-permissionstate-granted①①">"granted"</a></code>.</p>
-   <p>Additionally for calls to <code class="idl"><a data-link-type="idl" href="#dom-window-showsavefilepicker" id="ref-for-dom-window-showsavefilepicker②">showSaveFilePicker</a></code> the <a data-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-permission-state" id="ref-for-dfn-permission-state①⓪">permission state</a> for a descriptor with <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-handle" id="ref-for-dom-filesystempermissiondescriptor-handle①①">handle</a></code> set to the returned handle,
-and <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-mode" id="ref-for-dom-filesystempermissiondescriptor-mode⑨">mode</a></code> set to <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-readwrite" id="ref-for-dom-filesystempermissionmode-readwrite①①">readwrite</a></code> should be <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissionstate-granted" id="ref-for-dom-permissionstate-granted①②">"granted"</a></code>.</p>
+for the returned files. As such, at the time the promise returned by one of the <a data-link-type="dfn" href="#local-file-system-handle-factories" id="ref-for-local-file-system-handle-factories②">local file system handle factories</a> resolves, <a data-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-permission-state" id="ref-for-dfn-permission-state⑦">permission state</a> for a descriptor with <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-handle" id="ref-for-dom-filesystempermissiondescriptor-handle⑧">handle</a></code> set to the returned handle,
+and <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-mode" id="ref-for-dom-filesystempermissiondescriptor-mode⑥">mode</a></code> set to <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-read" id="ref-for-dom-filesystempermissionmode-read④">"read"</a></code> should be <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissionstate-granted" id="ref-for-dom-permissionstate-granted②">"granted"</a></code>.</p>
+   <p>Additionally for calls to <code class="idl"><a data-link-type="idl" href="#dom-window-showsavefilepicker" id="ref-for-dom-window-showsavefilepicker②">showSaveFilePicker</a></code> the <a data-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-permission-state" id="ref-for-dfn-permission-state⑧">permission state</a> for a descriptor with <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-handle" id="ref-for-dom-filesystempermissiondescriptor-handle⑨">handle</a></code> set to the returned handle,
+and <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-mode" id="ref-for-dom-filesystempermissiondescriptor-mode⑦">mode</a></code> set to <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-readwrite" id="ref-for-dom-filesystempermissionmode-readwrite⑤">readwrite</a></code> should be <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissionstate-granted" id="ref-for-dom-permissionstate-granted③">"granted"</a></code>.</p>
    <div class="algorithm" data-algorithm="is allowed to show a file picker">
      To verify that an <var>environment</var> <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="is-allowed-to-show-a-file-picker">is allowed to show a file picker</dfn>, run these steps: 
     <ol>
      <li data-md>
-      <p>If <var>environment</var>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-settings-object-origin" id="ref-for-concept-settings-object-origin③">origin</a> is an <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsers.html#concept-origin-opaque" id="ref-for-concept-origin-opaque">opaque origin</a>,
- return <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-promise-rejected-with" id="ref-for-a-promise-rejected-with①">a promise rejected with</a> a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#securityerror" id="ref-for-securityerror③">SecurityError</a></code>.</p>
+      <p>If <var>environment</var>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-settings-object-origin" id="ref-for-concept-settings-object-origin①">origin</a> is an <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsers.html#concept-origin-opaque" id="ref-for-concept-origin-opaque">opaque origin</a>,
+ return <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-promise-rejected-with" id="ref-for-a-promise-rejected-with">a promise rejected with</a> a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#securityerror" id="ref-for-securityerror③">SecurityError</a></code>.</p>
      <li data-md>
-      <p>If <var>environment</var>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-settings-object-origin" id="ref-for-concept-settings-object-origin④">origin</a> is not <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsers.html#same-origin" id="ref-for-same-origin②">same origin</a> with <var>environment</var>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-environment-top-level-origin" id="ref-for-concept-environment-top-level-origin①">top-level origin</a>,
- return <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-promise-rejected-with" id="ref-for-a-promise-rejected-with②">a promise rejected with</a> a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#securityerror" id="ref-for-securityerror④">SecurityError</a></code>.</p>
+      <p>If <var>environment</var>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-settings-object-origin" id="ref-for-concept-settings-object-origin②">origin</a> is not <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsers.html#same-origin" id="ref-for-same-origin①">same origin</a> with <var>environment</var>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-environment-top-level-origin" id="ref-for-concept-environment-top-level-origin①">top-level origin</a>,
+ return <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-promise-rejected-with" id="ref-for-a-promise-rejected-with①">a promise rejected with</a> a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#securityerror" id="ref-for-securityerror④">SecurityError</a></code>.</p>
      <li data-md>
       <p>Let <var>global</var> be <var>environment</var>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-settings-object-global" id="ref-for-concept-settings-object-global①">global object</a>.</p>
      <li data-md>
@@ -2375,7 +1337,7 @@ <h4 class="heading settled" data-level="3.2.1" id="api-filepickeroptions-types">
      <li data-md>
       <p>Let <var>accepts options</var> be a empty <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list" id="ref-for-list">list</a> of <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#tuple" id="ref-for-tuple">tuples</a> consisting of a description and a filter.</p>
      <li data-md>
-      <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-iterate" id="ref-for-list-iterate④">For each</a> <var>type</var> of <var>options</var>.<code class="idl"><a data-link-type="idl" href="#dom-filepickeroptions-types" id="ref-for-dom-filepickeroptions-types③">types</a></code>:</p>
+      <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-iterate" id="ref-for-list-iterate">For each</a> <var>type</var> of <var>options</var>.<code class="idl"><a data-link-type="idl" href="#dom-filepickeroptions-types" id="ref-for-dom-filepickeroptions-types③">types</a></code>:</p>
       <ol>
        <li data-md>
         <p>Let <var>description</var> be <var>type</var>.<code class="idl"><a data-link-type="idl" href="#dom-filepickeraccepttype-description" id="ref-for-dom-filepickeraccepttype-description③">description</a></code>.</p>
@@ -2385,9 +1347,9 @@ <h4 class="heading settled" data-level="3.2.1" id="api-filepickeroptions-types">
          <li data-md>
           <p>Let <var>parsedType</var> be the result of <a data-link-type="dfn" href="https://mimesniff.spec.whatwg.org/#parse-a-mime-type" id="ref-for-parse-a-mime-type">parse a MIME type</a> with <var>typeString</var>.</p>
          <li data-md>
-          <p>If <var>parsedType</var> is failure, throw a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#exceptiondef-typeerror" id="ref-for-exceptiondef-typeerror⑥">TypeError</a></code>.</p>
+          <p>If <var>parsedType</var> is failure, throw a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#exceptiondef-typeerror" id="ref-for-exceptiondef-typeerror">TypeError</a></code>.</p>
          <li data-md>
-          <p>If <var>parsedType</var>’s <a data-link-type="dfn" href="https://mimesniff.spec.whatwg.org/#parameters" id="ref-for-parameters">parameters</a> are not empty, throw a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#exceptiondef-typeerror" id="ref-for-exceptiondef-typeerror⑦">TypeError</a></code>.</p>
+          <p>If <var>parsedType</var>’s <a data-link-type="dfn" href="https://mimesniff.spec.whatwg.org/#parameters" id="ref-for-parameters">parameters</a> are not empty, throw a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#exceptiondef-typeerror" id="ref-for-exceptiondef-typeerror①">TypeError</a></code>.</p>
          <li data-md>
           <p>If <var>suffixes</var> is a string:</p>
           <ol>
@@ -2395,14 +1357,14 @@ <h4 class="heading settled" data-level="3.2.1" id="api-filepickeroptions-types">
             <p><a data-link-type="dfn" href="#validate-a-suffix" id="ref-for-validate-a-suffix">Validate a suffix</a> given <var>suffixes</var>.</p>
           </ol>
          <li data-md>
-          <p>Otherwise, <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-iterate" id="ref-for-list-iterate⑤">for each</a> <var>suffix</var> of <var>suffixes</var>:</p>
+          <p>Otherwise, <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-iterate" id="ref-for-list-iterate①">for each</a> <var>suffix</var> of <var>suffixes</var>:</p>
           <ol>
            <li data-md>
             <p><a data-link-type="dfn" href="#validate-a-suffix" id="ref-for-validate-a-suffix①">Validate a suffix</a> given <var>suffix</var>.</p>
           </ol>
         </ol>
        <li data-md>
-        <p>Let <var>filter</var> be the following steps, given a <var>filename</var> (a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#string" id="ref-for-string②">string</a>), and a <var>type</var> (a <a data-link-type="dfn" href="https://mimesniff.spec.whatwg.org/#mime-type" id="ref-for-mime-type">MIME type</a>):</p>
+        <p>Let <var>filter</var> be the following steps, given a <var>filename</var> (a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#string" id="ref-for-string">string</a>), and a <var>type</var> (a <a data-link-type="dfn" href="https://mimesniff.spec.whatwg.org/#mime-type" id="ref-for-mime-type">MIME type</a>):</p>
         <ol>
          <li data-md>
           <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#map-iterate" id="ref-for-map-iterate①">For each</a> <var>typeString</var> → <var>suffixes</var> of <var>type</var>.<code class="idl"><a data-link-type="idl" href="#dom-filepickeraccepttype-accept" id="ref-for-dom-filepickeraccepttype-accept④">accept</a></code>:</p>
@@ -2422,7 +1384,7 @@ <h4 class="heading settled" data-level="3.2.1" id="api-filepickeroptions-types">
            <li data-md>
             <p>If <var>suffixes</var> is a string, set <var>suffixes</var> to « <var>suffixes</var> ».</p>
            <li data-md>
-            <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-iterate" id="ref-for-list-iterate⑥">For each</a> <var>suffix</var> of <var>suffixes</var>:</p>
+            <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-iterate" id="ref-for-list-iterate②">For each</a> <var>suffix</var> of <var>suffixes</var>:</p>
             <ol>
              <li data-md>
               <p>If <var>filename</var> ends with <var>suffix</var>, return <code>true</code>.</p>
@@ -2435,7 +1397,7 @@ <h4 class="heading settled" data-level="3.2.1" id="api-filepickeroptions-types">
         <p>If <var>description</var> is an empty string,
 set <var>description</var> to some user understandable string describing <var>filter</var>.</p>
        <li data-md>
-        <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-append" id="ref-for-list-append①">Append</a> (<var>description</var>, <var>filter</var>) to <var>accepts options</var>.</p>
+        <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-append" id="ref-for-list-append">Append</a> (<var>description</var>, <var>filter</var>) to <var>accepts options</var>.</p>
       </ol>
      <li data-md>
       <p>If either <var>accepts options</var> is <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-empty" id="ref-for-list-empty">empty</a>,
@@ -2447,11 +1409,11 @@ <h4 class="heading settled" data-level="3.2.1" id="api-filepickeroptions-types">
          <li data-md>
           <p>Let <var>filter</var> be an algorithm that returns <code>true</code>.</p>
          <li data-md>
-          <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-append" id="ref-for-list-append②">Append</a> (<var>description</var>, <var>filter</var>) to <var>accepts options</var>.</p>
+          <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-append" id="ref-for-list-append①">Append</a> (<var>description</var>, <var>filter</var>) to <var>accepts options</var>.</p>
         </ol>
       </ol>
      <li data-md>
-      <p>If <var>accepts options</var> is empty, throw a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#exceptiondef-typeerror" id="ref-for-exceptiondef-typeerror⑧">TypeError</a></code>.</p>
+      <p>If <var>accepts options</var> is empty, throw a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#exceptiondef-typeerror" id="ref-for-exceptiondef-typeerror②">TypeError</a></code>.</p>
      <li data-md>
       <p>Return <var>accepts options</var>.</p>
     </ol>
@@ -2460,14 +1422,14 @@ <h4 class="heading settled" data-level="3.2.1" id="api-filepickeroptions-types">
      To <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="validate-a-suffix">validate a suffix</dfn> <var>suffix</var>, run the following steps: 
     <ol>
      <li data-md>
-      <p>If <var>suffix</var> does not <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#string-starts-with" id="ref-for-string-starts-with">start with</a> ".", throw a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#exceptiondef-typeerror" id="ref-for-exceptiondef-typeerror⑨">TypeError</a></code>.</p>
+      <p>If <var>suffix</var> does not <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#string-starts-with" id="ref-for-string-starts-with">start with</a> ".", throw a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#exceptiondef-typeerror" id="ref-for-exceptiondef-typeerror③">TypeError</a></code>.</p>
      <li data-md>
       <p>If <var>suffix</var> contains any <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#code-point" id="ref-for-code-point①">code points</a> that are not <a data-link-type="dfn" href="#valid-suffix-code-point" id="ref-for-valid-suffix-code-point①">valid suffix code points</a>,
- throw a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#exceptiondef-typeerror" id="ref-for-exceptiondef-typeerror①⓪">TypeError</a></code>.</p>
+ throw a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#exceptiondef-typeerror" id="ref-for-exceptiondef-typeerror④">TypeError</a></code>.</p>
      <li data-md>
-      <p>If <var>suffix</var> ends with ".", throw a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#exceptiondef-typeerror" id="ref-for-exceptiondef-typeerror①①">TypeError</a></code>.</p>
+      <p>If <var>suffix</var> ends with ".", throw a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#exceptiondef-typeerror" id="ref-for-exceptiondef-typeerror⑤">TypeError</a></code>.</p>
      <li data-md>
-      <p>If <var>suffix</var>’s <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#string-length" id="ref-for-string-length">length</a> is more than 16, throw a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#exceptiondef-typeerror" id="ref-for-exceptiondef-typeerror①②">TypeError</a></code>.</p>
+      <p>If <var>suffix</var>’s <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#string-length" id="ref-for-string-length">length</a> is more than 16, throw a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#exceptiondef-typeerror" id="ref-for-exceptiondef-typeerror⑥">TypeError</a></code>.</p>
     </ol>
    </div>
    <h4 class="heading settled" data-level="3.2.2" id="api-filepickeroptions-starting-directory"><span class="secno">3.2.2. </span><span class="content">Starting Directory</span><a class="self-link" href="#api-filepickeroptions-starting-directory"></a></h4>
@@ -2484,10 +1446,10 @@ <h4 class="heading settled" data-level="3.2.2" id="api-filepickeroptions-startin
   <code class="idl"><a data-link-type="idl" href="#dom-filepickeroptions-id" id="ref-for-dom-filepickeroptions-id②">id</a></code><c- o>:</c-> <c- t>'foo'</c-><c- p>,</c->
 <c- p>};</c->
 </pre>
-    <p>Specifying <code class="idl"><a data-link-type="idl" href="#dom-filepickeroptions-startin" id="ref-for-dom-filepickeroptions-startin①">startIn</a></code> as a <code class="idl"><a data-link-type="idl" href="#filesystemfilehandle" id="ref-for-filesystemfilehandle①⓪">FileSystemFileHandle</a></code> will result in the dialog
-starting in the parent directory of that file, while passing in a <code class="idl"><a data-link-type="idl" href="#filesystemdirectoryhandle" id="ref-for-filesystemdirectoryhandle①①">FileSystemDirectoryHandle</a></code> will result in the dialog to start in the passed in directory. These take precedence even if
+    <p>Specifying <code class="idl"><a data-link-type="idl" href="#dom-filepickeroptions-startin" id="ref-for-dom-filepickeroptions-startin①">startIn</a></code> as a <code class="idl"><a data-link-type="idl" href="https://fs.spec.whatwg.org/#filesystemfilehandle" id="ref-for-filesystemfilehandle②">FileSystemFileHandle</a></code> will result in the dialog
+starting in the parent directory of that file, while passing in a <code class="idl"><a data-link-type="idl" href="https://fs.spec.whatwg.org/#filesystemdirectoryhandle" id="ref-for-filesystemdirectoryhandle①">FileSystemDirectoryHandle</a></code> will result in the dialog to start in the passed in directory. These take precedence even if
 an explicit <code class="idl"><a data-link-type="idl" href="#dom-filepickeroptions-id" id="ref-for-dom-filepickeroptions-id③">id</a></code> is also passed in.</p>
-    <p>For example, given a <code class="idl"><a data-link-type="idl" href="#filesystemdirectoryhandle" id="ref-for-filesystemdirectoryhandle①②">FileSystemDirectoryHandle</a></code> <var>project_dir</var>, the following will show
+    <p>For example, given a <code class="idl"><a data-link-type="idl" href="https://fs.spec.whatwg.org/#filesystemdirectoryhandle" id="ref-for-filesystemdirectoryhandle②">FileSystemDirectoryHandle</a></code> <var>project_dir</var>, the following will show
 a file picker that starts out in that directory:</p>
 <pre class="example highlight" id="filepickeroptions-starting-directory-example2"><a class="self-link" href="#filepickeroptions-starting-directory-example2"></a><c- c1>// The picker will open to the directory of |project_dir| regardless of whether</c->
 <c- c1>// 'foo' has a valid mapping.</c->
@@ -2525,7 +1487,7 @@ <h4 class="heading settled" data-level="3.2.2" id="api-filepickeroptions-startin
    <p><strong class="advisement"> The <code class="idl"><a data-link-type="idl" href="#dom-filepickeroptions-startin" id="ref-for-dom-filepickeroptions-startin⑧">startIn</a></code> and <code class="idl"><a data-link-type="idl" href="#dom-filepickeroptions-id" id="ref-for-dom-filepickeroptions-id①①">id</a></code> options were first introduced in Chrome 91.</strong></p>
    <p>A user agent holds a <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="recently-picked-directory-map">recently picked directory map</dfn>, which is a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#ordered-map" id="ref-for-ordered-map">map</a> of <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsers.html#concept-origin" id="ref-for-concept-origin">origins</a> to <a data-link-type="dfn" href="#path-id-map" id="ref-for-path-id-map">path id maps</a>.</p>
    <p>A <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="path-id-map">path id map</dfn> is a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#ordered-map" id="ref-for-ordered-map①">map</a> of <a data-link-type="dfn" href="#valid-path-id" id="ref-for-valid-path-id">valid path ids</a> to paths.</p>
-   <p>A <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="valid-path-id">valid path id</dfn> is a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#string" id="ref-for-string③">string</a> where each character is <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#ascii-alphanumeric" id="ref-for-ascii-alphanumeric①">ASCII alphanumeric</a> or "_" or "-".</p>
+   <p>A <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="valid-path-id">valid path id</dfn> is a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#string" id="ref-for-string①">string</a> where each character is <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#ascii-alphanumeric" id="ref-for-ascii-alphanumeric①">ASCII alphanumeric</a> or "_" or "-".</p>
    <p>To prevent a <a data-link-type="dfn" href="#path-id-map" id="ref-for-path-id-map①">path id map</a> from growing without a bound, user agents should implement
 some mechanism to limit how many recently picked directories will be remembered. This
 can for example be done by evicting least recently used entries.
@@ -2559,30 +1521,30 @@ <h4 class="heading settled" data-level="3.2.2" id="api-filepickeroptions-startin
  For example <code>C:\Documents and Settings\username\My Documents\My Videos</code>, <code>/Users/username/Movies</code>, or <code>/home/username/Videos</code>.</p>
     </dd>
     <div class="algorithm" data-algorithm="determine the directory the picker will start in">
-      To <dfn class="dfn-paneled" data-dfn-for="WellKnownDirectory" data-dfn-type="dfn" data-noexport id="wellknowndirectory-determine-the-directory-the-picker-will-start-in">determine the directory the picker will start in</dfn>, given an optional <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#string" id="ref-for-string④">string</a> <var>id</var>,
+      To <dfn class="dfn-paneled" data-dfn-for="WellKnownDirectory" data-dfn-type="dfn" data-noexport id="wellknowndirectory-determine-the-directory-the-picker-will-start-in">determine the directory the picker will start in</dfn>, given an optional <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#string" id="ref-for-string②">string</a> <var>id</var>,
 an optional <code class="idl"><a data-link-type="idl" href="#typedefdef-startindirectory" id="ref-for-typedefdef-startindirectory②">StartInDirectory</a></code> <var>startIn</var> and an <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#environment-settings-object" id="ref-for-environment-settings-object">environment settings object</a> <var>environment</var>,
 run the following steps: 
      <ol>
       <li data-md>
-       <p>If <var>id</var> given, and is not a <a data-link-type="dfn" href="#valid-path-id" id="ref-for-valid-path-id①">valid path id</a>, throw a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#exceptiondef-typeerror" id="ref-for-exceptiondef-typeerror①③">TypeError</a></code>.</p>
+       <p>If <var>id</var> given, and is not a <a data-link-type="dfn" href="#valid-path-id" id="ref-for-valid-path-id①">valid path id</a>, throw a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#exceptiondef-typeerror" id="ref-for-exceptiondef-typeerror⑦">TypeError</a></code>.</p>
       <li data-md>
-       <p>If <var>id</var>’s <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#string-length" id="ref-for-string-length①">length</a> is more than 32, throw a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#exceptiondef-typeerror" id="ref-for-exceptiondef-typeerror①④">TypeError</a></code>.</p>
+       <p>If <var>id</var>’s <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#string-length" id="ref-for-string-length①">length</a> is more than 32, throw a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#exceptiondef-typeerror" id="ref-for-exceptiondef-typeerror⑧">TypeError</a></code>.</p>
       <li data-md>
-       <p>Let <var>origin</var> be <var>environment</var>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-settings-object-origin" id="ref-for-concept-settings-object-origin⑤">origin</a>.</p>
+       <p>Let <var>origin</var> be <var>environment</var>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-settings-object-origin" id="ref-for-concept-settings-object-origin③">origin</a>.</p>
       <li data-md>
-       <p>If <var>startIn</var> is a <code class="idl"><a data-link-type="idl" href="#filesystemhandle" id="ref-for-filesystemhandle①⑥">FileSystemHandle</a></code>:</p>
+       <p>If <var>startIn</var> is a <code class="idl"><a data-link-type="idl" href="https://fs.spec.whatwg.org/#filesystemhandle" id="ref-for-filesystemhandle⑥">FileSystemHandle</a></code>:</p>
        <ol>
         <li data-md>
-         <p>Let <var>entry</var> be <var>startIn</var>’s <a data-link-type="dfn" href="#filesystemhandle-entry" id="ref-for-filesystemhandle-entry②②">entry</a>.</p>
+         <p>Let <var>entry</var> be <var>startIn</var>’s <a data-link-type="dfn" href="https://fs.spec.whatwg.org/#filesystemhandle-entry" id="ref-for-filesystemhandle-entry①">entry</a>.</p>
         <li data-md>
-         <p>If <var>entry</var> does not represent an <a data-link-type="dfn" href="#entry" id="ref-for-entry①④">entry</a> in an <a data-link-type="dfn">origin private file system</a>:</p>
+         <p>If <var>entry</var> does not represent a <a data-link-type="dfn" href="https://fs.spec.whatwg.org/#entry" id="ref-for-entry①">file system entry</a> in an <a data-link-type="dfn" href="https://fs.spec.whatwg.org/#origin-private-file-system" id="ref-for-origin-private-file-system②">origin private file system</a>:</p>
          <ol>
           <li data-md>
-           <p>If <var>entry</var> is a <a data-link-type="dfn" href="#file" id="ref-for-file⑨">file entry</a>, and a path on the local file system
- corresponding to the parent directory if <var>entry</var> can be determined,
+           <p>If <var>entry</var> is a <a data-link-type="dfn" href="https://fs.spec.whatwg.org/#file" id="ref-for-file">file entry</a>, and a path on the local file system
+ corresponding to the parent directory of <var>entry</var> can be determined,
  then return that path.</p>
           <li data-md>
-           <p>If <var>entry</var> is a <a data-link-type="dfn" href="#directory" id="ref-for-directory⑧">directory entry</a>, and a path on the local file system
+           <p>If <var>entry</var> is a <a data-link-type="dfn" href="https://fs.spec.whatwg.org/#directory" id="ref-for-directory">directory entry</a>, and a path on the local file system
  corresponding to <var>entry</var> can be determined,
  then return that path.</p>
          </ol>
@@ -2622,12 +1584,12 @@ <h4 class="heading settled" data-level="3.2.2" id="api-filepickeroptions-startin
      </ol>
     </div>
     <div class="algorithm" data-algorithm="remember a picked directory">
-      To <dfn class="dfn-paneled" data-dfn-for="WellKnownDirectory" data-dfn-type="dfn" data-noexport id="wellknowndirectory-remember-a-picked-directory">remember a picked directory</dfn>, given an optional <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#string" id="ref-for-string⑤">string</a> <var>id</var>,
-an <a data-link-type="dfn" href="#entry" id="ref-for-entry①⑤">entry</a> <var>entry</var>, and an <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#environment-settings-object" id="ref-for-environment-settings-object①">environment settings object</a> <var>environment</var>,
+      To <dfn class="dfn-paneled" data-dfn-for="WellKnownDirectory" data-dfn-type="dfn" data-noexport id="wellknowndirectory-remember-a-picked-directory">remember a picked directory</dfn>, given an optional <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#string" id="ref-for-string③">string</a> <var>id</var>,
+a <a data-link-type="dfn" href="https://fs.spec.whatwg.org/#entry" id="ref-for-entry②">file system entry</a> <var>entry</var>, and an <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#environment-settings-object" id="ref-for-environment-settings-object①">environment settings object</a> <var>environment</var>,
 run the following steps: 
      <ol>
       <li data-md>
-       <p>Let <var>origin</var> be <var>environment</var>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-settings-object-origin" id="ref-for-concept-settings-object-origin⑥">origin</a>.</p>
+       <p>Let <var>origin</var> be <var>environment</var>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-settings-object-origin" id="ref-for-concept-settings-object-origin④">origin</a>.</p>
       <li data-md>
        <p>If <a data-link-type="dfn" href="#recently-picked-directory-map" id="ref-for-recently-picked-directory-map④">recently picked directory map</a>[<var>origin</var>] does not <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#map-exists" id="ref-for-map-exists④">exist</a>,
  then set <a data-link-type="dfn" href="#recently-picked-directory-map" id="ref-for-recently-picked-directory-map⑤">recently picked directory map</a>[<var>origin</var>] to an empty <a data-link-type="dfn" href="#path-id-map" id="ref-for-path-id-map③">path id map</a>.</p>
@@ -2674,7 +1636,7 @@ <h3 class="heading settled" data-level="3.3" id="api-showopenfilepicker"><span c
 these steps: 
      <ol>
       <li data-md>
-       <p>Let <var>environment</var> be <b><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this②①">this</a></b>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#relevant-settings-object" id="ref-for-relevant-settings-object③">relevant settings object</a>.</p>
+       <p>Let <var>environment</var> be <b><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this②">this</a></b>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#relevant-settings-object" id="ref-for-relevant-settings-object①">relevant settings object</a>.</p>
       <li data-md>
        <p>Let <var>accepts options</var> be the result of <a data-link-type="dfn" href="#process-accept-types" id="ref-for-process-accept-types">processing accept types</a> given <var>options</var>.</p>
       <li data-md>
@@ -2684,9 +1646,9 @@ <h3 class="heading settled" data-level="3.3" id="api-showopenfilepicker"><span c
       <li data-md>
        <p>Verify that <var>environment</var> <a data-link-type="dfn" href="#is-allowed-to-show-a-file-picker" id="ref-for-is-allowed-to-show-a-file-picker">is allowed to show a file picker</a>.</p>
       <li data-md>
-       <p>Let <var>p</var> be <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-new-promise" id="ref-for-a-new-promise①②">a new promise</a>.</p>
+       <p>Let <var>p</var> be <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-new-promise" id="ref-for-a-new-promise②">a new promise</a>.</p>
       <li data-md>
-       <p>Run the following steps <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel" id="ref-for-in-parallel①①">in parallel</a>:</p>
+       <p>Run the following steps <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel" id="ref-for-in-parallel②">in parallel</a>:</p>
        <ol>
         <li data-md>
          <p>Optionally, wait until any prior execution of this algorithm has terminated.</p>
@@ -2700,13 +1662,13 @@ <h3 class="heading settled" data-level="3.3" id="api-showopenfilepicker"><span c
         <li data-md>
          <p>Wait for the user to have made their selection.</p>
         <li data-md>
-         <p>If the user dismissed the prompt without making a selection, <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject②④">reject</a> <var>p</var> with an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#aborterror" id="ref-for-aborterror①">AbortError</a></code> and abort.</p>
+         <p>If the user dismissed the prompt without making a selection, <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject①">reject</a> <var>p</var> with an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#aborterror" id="ref-for-aborterror">AbortError</a></code> and abort.</p>
         <li data-md>
-         <p>Let <var>entries</var> be a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list" id="ref-for-list①">list</a> of <a data-link-type="dfn" href="#file" id="ref-for-file①⓪">file entries</a> representing the selected files or directories.</p>
+         <p>Let <var>entries</var> be a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list" id="ref-for-list①">list</a> of <a data-link-type="dfn" href="https://fs.spec.whatwg.org/#file" id="ref-for-file①">file entries</a> representing the selected files or directories.</p>
         <li data-md>
          <p>Let <var>result</var> be a empty <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list" id="ref-for-list②">list</a>.</p>
         <li data-md>
-         <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-iterate" id="ref-for-list-iterate⑦">For each</a> <var>entry</var> of <var>entries</var>:</p>
+         <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-iterate" id="ref-for-list-iterate③">For each</a> <var>entry</var> of <var>entries</var>:</p>
          <ol>
           <li data-md>
            <p>If <var>entry</var> is deemed <a data-link-type="dfn" href="#wellknowndirectory-too-sensitive-or-dangerous" id="ref-for-wellknowndirectory-too-sensitive-or-dangerous">too sensitive or dangerous</a> to be exposed to this website by the user agent:</p>
@@ -2715,11 +1677,11 @@ <h3 class="heading settled" data-level="3.3" id="api-showopenfilepicker"><span c
              <p>Inform the user that the selected files or directories can’t be exposed to this website.</p>
             <li data-md>
              <p>At the discretion of the user agent,
- either go back to the beginning of these <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel" id="ref-for-in-parallel①②">in parallel</a> steps,
- or <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject②⑤">reject</a> <var>p</var> with an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#aborterror" id="ref-for-aborterror②">AbortError</a></code> and abort.</p>
+ either go back to the beginning of these <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel" id="ref-for-in-parallel③">in parallel</a> steps,
+ or <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject②">reject</a> <var>p</var> with an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#aborterror" id="ref-for-aborterror①">AbortError</a></code> and abort.</p>
            </ol>
           <li data-md>
-           <p>Add a new <code class="idl"><a data-link-type="idl" href="#filesystemfilehandle" id="ref-for-filesystemfilehandle①①">FileSystemFileHandle</a></code> associated with <var>entry</var> to <var>result</var>.</p>
+           <p>Add a new <code class="idl"><a data-link-type="idl" href="https://fs.spec.whatwg.org/#filesystemfilehandle" id="ref-for-filesystemfilehandle③">FileSystemFileHandle</a></code> associated with <var>entry</var> to <var>result</var>.</p>
          </ol>
         <li data-md>
          <p><a data-link-type="dfn" href="#wellknowndirectory-remember-a-picked-directory" id="ref-for-wellknowndirectory-remember-a-picked-directory">Remember a picked directory</a> given <var>options</var>.<code class="idl"><a data-link-type="idl" href="#dom-filepickeroptions-id" id="ref-for-dom-filepickeroptions-id①③">id</a></code>, <var>entries</var>[0] and <var>environment</var>.</p>
@@ -2728,7 +1690,7 @@ <h3 class="heading settled" data-level="3.3" id="api-showopenfilepicker"><span c
          <p class="note" role="note"><span>Note:</span> This lets a website immediately perform operations on the returned handles that
  might require user activation, such as requesting more permissions.</p>
         <li data-md>
-         <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve②⓪">Resolve</a> <var>p</var> with <var>result</var>.</p>
+         <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve②">Resolve</a> <var>p</var> with <var>result</var>.</p>
        </ol>
       <li data-md>
        <p>Return <var>p</var>.</p>
@@ -2771,7 +1733,7 @@ <h3 class="heading settled" data-level="3.4" id="api-showsavefilepicker"><span c
 these steps: 
      <ol>
       <li data-md>
-       <p>Let <var>environment</var> be <b><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this②②">this</a></b>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#relevant-settings-object" id="ref-for-relevant-settings-object④">relevant settings object</a>.</p>
+       <p>Let <var>environment</var> be <b><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this③">this</a></b>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#relevant-settings-object" id="ref-for-relevant-settings-object②">relevant settings object</a>.</p>
       <li data-md>
        <p>Let <var>accepts options</var> be the result of <a data-link-type="dfn" href="#process-accept-types" id="ref-for-process-accept-types①">processing accept types</a> given <var>options</var>.</p>
       <li data-md>
@@ -2781,9 +1743,9 @@ <h3 class="heading settled" data-level="3.4" id="api-showsavefilepicker"><span c
       <li data-md>
        <p>Verify that <var>environment</var> <a data-link-type="dfn" href="#is-allowed-to-show-a-file-picker" id="ref-for-is-allowed-to-show-a-file-picker①">is allowed to show a file picker</a>.</p>
       <li data-md>
-       <p>Let <var>p</var> be <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-new-promise" id="ref-for-a-new-promise①③">a new promise</a>.</p>
+       <p>Let <var>p</var> be <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-new-promise" id="ref-for-a-new-promise③">a new promise</a>.</p>
       <li data-md>
-       <p>Run the following steps <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel" id="ref-for-in-parallel①③">in parallel</a>:</p>
+       <p>Run the following steps <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel" id="ref-for-in-parallel④">in parallel</a>:</p>
        <ol>
         <li data-md>
          <p>Optionally, wait until any prior execution of this algorithm has terminated.</p>
@@ -2803,9 +1765,9 @@ <h3 class="heading settled" data-level="3.4" id="api-showsavefilepicker"><span c
         <li data-md>
          <p>Wait for the user to have made their selection.</p>
         <li data-md>
-         <p>If the user dismissed the prompt without making a selection, <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject②⑥">reject</a> <var>p</var> with an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#aborterror" id="ref-for-aborterror③">AbortError</a></code> and abort.</p>
+         <p>If the user dismissed the prompt without making a selection, <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject③">reject</a> <var>p</var> with an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#aborterror" id="ref-for-aborterror②">AbortError</a></code> and abort.</p>
         <li data-md>
-         <p>Let <var>entry</var> be a <a data-link-type="dfn" href="#file" id="ref-for-file①①">file entry</a> representing the selected file.</p>
+         <p>Let <var>entry</var> be a <a data-link-type="dfn" href="https://fs.spec.whatwg.org/#file" id="ref-for-file②">file entry</a> representing the selected file.</p>
         <li data-md>
          <p>If <var>entry</var> is deemed <a data-link-type="dfn" href="#wellknowndirectory-too-sensitive-or-dangerous" id="ref-for-wellknowndirectory-too-sensitive-or-dangerous①">too sensitive or dangerous</a> to be exposed to this website by the user agent:</p>
          <ol>
@@ -2813,13 +1775,13 @@ <h3 class="heading settled" data-level="3.4" id="api-showsavefilepicker"><span c
            <p>Inform the user that the selected files or directories can’t be exposed to this website.</p>
           <li data-md>
            <p>At the discretion of the user agent,
- either go back to the beginning of these <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel" id="ref-for-in-parallel①④">in parallel</a> steps,
- or <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject②⑦">reject</a> <var>p</var> with an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#aborterror" id="ref-for-aborterror④">AbortError</a></code> and abort.</p>
+ either go back to the beginning of these <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel" id="ref-for-in-parallel⑤">in parallel</a> steps,
+ or <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject④">reject</a> <var>p</var> with an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#aborterror" id="ref-for-aborterror③">AbortError</a></code> and abort.</p>
          </ol>
         <li data-md>
-         <p>Set <var>entry</var>’s <a data-link-type="dfn" href="#file-entry-binary-data" id="ref-for-file-entry-binary-data⑤">binary data</a> to an empty <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte-sequence" id="ref-for-byte-sequence⑨">byte sequence</a>.</p>
+         <p>Set <var>entry</var>’s <a data-link-type="dfn" href="https://fs.spec.whatwg.org/#file-entry-binary-data" id="ref-for-file-entry-binary-data">binary data</a> to an empty <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte-sequence" id="ref-for-byte-sequence">byte sequence</a>.</p>
         <li data-md>
-         <p>Set <var>result</var> to a new <code class="idl"><a data-link-type="idl" href="#filesystemfilehandle" id="ref-for-filesystemfilehandle①②">FileSystemFileHandle</a></code> associated with <var>entry</var>.</p>
+         <p>Set <var>result</var> to a new <code class="idl"><a data-link-type="idl" href="https://fs.spec.whatwg.org/#filesystemfilehandle" id="ref-for-filesystemfilehandle④">FileSystemFileHandle</a></code> associated with <var>entry</var>.</p>
         <li data-md>
          <p><a data-link-type="dfn" href="#wellknowndirectory-remember-a-picked-directory" id="ref-for-wellknowndirectory-remember-a-picked-directory①">Remember a picked directory</a> given <var>options</var>.<code class="idl"><a data-link-type="idl" href="#dom-filepickeroptions-id" id="ref-for-dom-filepickeroptions-id①⑤">id</a></code>, <var>entry</var> and <var>environment</var>.</p>
         <li data-md>
@@ -2827,7 +1789,7 @@ <h3 class="heading settled" data-level="3.4" id="api-showsavefilepicker"><span c
          <p class="note" role="note"><span>Note:</span> This lets a website immediately perform operations on the returned handles that
  might require user activation, such as requesting more permissions.</p>
         <li data-md>
-         <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve②①">Resolve</a> <var>p</var> with <var>result</var>.</p>
+         <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve③">Resolve</a> <var>p</var> with <var>result</var>.</p>
        </ol>
       <li data-md>
        <p>Return <var>p</var>.</p>
@@ -2871,7 +1833,7 @@ <h3 class="heading settled" data-level="3.5" id="api-showdirectorypicker"><span
 these steps: 
      <ol>
       <li data-md>
-       <p>Let <var>environment</var> be <b><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this②③">this</a></b>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#relevant-settings-object" id="ref-for-relevant-settings-object⑤">relevant settings object</a>.</p>
+       <p>Let <var>environment</var> be <b><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this④">this</a></b>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#relevant-settings-object" id="ref-for-relevant-settings-object③">relevant settings object</a>.</p>
       <li data-md>
        <p>Let <var>starting directory</var> be the result of <a data-link-type="dfn" href="#wellknowndirectory-determine-the-directory-the-picker-will-start-in" id="ref-for-wellknowndirectory-determine-the-directory-the-picker-will-start-in②">determining the directory the picker will start in</a> given <var>options</var>.<code class="idl"><a data-link-type="idl" href="#dom-directorypickeroptions-id" id="ref-for-dom-directorypickeroptions-id①">id</a></code>, <var>options</var>.<code class="idl"><a data-link-type="idl" href="#dom-directorypickeroptions-startin" id="ref-for-dom-directorypickeroptions-startin①">startIn</a></code> and <var>environment</var>.</p>
       <li data-md>
@@ -2879,9 +1841,9 @@ <h3 class="heading settled" data-level="3.5" id="api-showdirectorypicker"><span
       <li data-md>
        <p>Verify that <var>environment</var> <a data-link-type="dfn" href="#is-allowed-to-show-a-file-picker" id="ref-for-is-allowed-to-show-a-file-picker②">is allowed to show a file picker</a>.</p>
       <li data-md>
-       <p>Let <var>p</var> be <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-new-promise" id="ref-for-a-new-promise①④">a new promise</a>.</p>
+       <p>Let <var>p</var> be <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-new-promise" id="ref-for-a-new-promise④">a new promise</a>.</p>
       <li data-md>
-       <p>Run the following steps <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel" id="ref-for-in-parallel①⑤">in parallel</a>:</p>
+       <p>Run the following steps <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel" id="ref-for-in-parallel⑥">in parallel</a>:</p>
        <ol>
         <li data-md>
          <p>Optionally, wait until any prior execution of this algorithm has terminated.</p>
@@ -2891,9 +1853,9 @@ <h3 class="heading settled" data-level="3.5" id="api-showdirectorypicker"><span
         <li data-md>
          <p>Wait for the user to have made their selection.</p>
         <li data-md>
-         <p>If the user dismissed the prompt without making a selection, <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject②⑧">reject</a> <var>p</var> with an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#aborterror" id="ref-for-aborterror⑤">AbortError</a></code> and abort.</p>
+         <p>If the user dismissed the prompt without making a selection, <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject⑤">reject</a> <var>p</var> with an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#aborterror" id="ref-for-aborterror④">AbortError</a></code> and abort.</p>
         <li data-md>
-         <p>Let <var>entry</var> be a <a data-link-type="dfn" href="#directory" id="ref-for-directory⑨">directory entry</a> representing the selected directory.</p>
+         <p>Let <var>entry</var> be a <a data-link-type="dfn" href="https://fs.spec.whatwg.org/#directory" id="ref-for-directory①">directory entry</a> representing the selected directory.</p>
         <li data-md>
          <p>If <var>entry</var> is deemed <a data-link-type="dfn" href="#wellknowndirectory-too-sensitive-or-dangerous" id="ref-for-wellknowndirectory-too-sensitive-or-dangerous②">too sensitive or dangerous</a> to be exposed to this website by the user agent:</p>
          <ol>
@@ -2901,15 +1863,15 @@ <h3 class="heading settled" data-level="3.5" id="api-showdirectorypicker"><span
            <p>Inform the user that the selected files or directories can’t be exposed to this website.</p>
           <li data-md>
            <p>At the discretion of the user agent,
- either go back to the beginning of these <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel" id="ref-for-in-parallel①⑥">in parallel</a> steps,
- or <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject②⑨">reject</a> <var>p</var> with an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#aborterror" id="ref-for-aborterror⑥">AbortError</a></code> and abort.</p>
+ either go back to the beginning of these <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel" id="ref-for-in-parallel⑦">in parallel</a> steps,
+ or <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject⑥">reject</a> <var>p</var> with an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#aborterror" id="ref-for-aborterror⑤">AbortError</a></code> and abort.</p>
          </ol>
         <li data-md>
-         <p>Set <var>result</var> to a new <code class="idl"><a data-link-type="idl" href="#filesystemdirectoryhandle" id="ref-for-filesystemdirectoryhandle①③">FileSystemDirectoryHandle</a></code> associated with <var>entry</var>.</p>
+         <p>Set <var>result</var> to a new <code class="idl"><a data-link-type="idl" href="https://fs.spec.whatwg.org/#filesystemdirectoryhandle" id="ref-for-filesystemdirectoryhandle③">FileSystemDirectoryHandle</a></code> associated with <var>entry</var>.</p>
         <li data-md>
          <p><a data-link-type="dfn" href="#wellknowndirectory-remember-a-picked-directory" id="ref-for-wellknowndirectory-remember-a-picked-directory②">Remember a picked directory</a> given <var>options</var>.<code class="idl"><a data-link-type="idl" href="#dom-directorypickeroptions-id" id="ref-for-dom-directorypickeroptions-id②">id</a></code>, <var>entry</var> and <var>environment</var>.</p>
         <li data-md>
-         <p>Let <var>desc</var> be a <code class="idl"><a data-link-type="idl" href="#dictdef-filesystempermissiondescriptor" id="ref-for-dictdef-filesystempermissiondescriptor⑦">FileSystemPermissionDescriptor</a></code> with <var>entry</var> as <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-handle" id="ref-for-dom-filesystempermissiondescriptor-handle①②">handle</a></code> and <var>options</var>.<code class="idl"><a data-link-type="idl" href="#dom-directorypickeroptions-mode" id="ref-for-dom-directorypickeroptions-mode②">mode</a></code> as <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-mode" id="ref-for-dom-filesystempermissiondescriptor-mode①⓪">mode</a></code>.</p>
+         <p>Let <var>desc</var> be a <code class="idl"><a data-link-type="idl" href="#dictdef-filesystempermissiondescriptor" id="ref-for-dictdef-filesystempermissiondescriptor⑤">FileSystemPermissionDescriptor</a></code> with <var>entry</var> as <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-handle" id="ref-for-dom-filesystempermissiondescriptor-handle①⓪">handle</a></code> and <var>options</var>.<code class="idl"><a data-link-type="idl" href="#dom-directorypickeroptions-mode" id="ref-for-dom-directorypickeroptions-mode②">mode</a></code> as <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissiondescriptor-mode" id="ref-for-dom-filesystempermissiondescriptor-mode⑧">mode</a></code>.</p>
         <li data-md>
          <p>Let <var>status</var> be the result of running <a data-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-create-a-permissionstatus" id="ref-for-dfn-create-a-permissionstatus①">create a PermissionStatus</a> for <var>desc</var>.</p>
         <li data-md>
@@ -2919,12 +1881,12 @@ <h3 class="heading settled" data-level="3.5" id="api-showdirectorypicker"><span
         <li data-md>
          <p>Run the <a data-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-default-permission-query-algorithm" id="ref-for-dfn-default-permission-query-algorithm②">default permission query algorithm</a> on <var>desc</var> and <var>status</var>.</p>
         <li data-md>
-         <p>If <var>status</var> is not <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissionstate-granted" id="ref-for-dom-permissionstate-granted①③">"granted"</a></code>,
- reject <var>result</var> with a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#aborterror" id="ref-for-aborterror⑦">AbortError</a></code> and abort.</p>
+         <p>If <var>status</var> is not <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissionstate-granted" id="ref-for-dom-permissionstate-granted④">"granted"</a></code>,
+ reject <var>result</var> with a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#aborterror" id="ref-for-aborterror⑥">AbortError</a></code> and abort.</p>
         <li data-md>
          <p>Perform the <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/interaction.html#activation-notification" id="ref-for-activation-notification③">activation notification</a> steps in <var>global</var>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/nav-history-apis.html#window-bc" id="ref-for-window-bc③">browsing context</a>.</p>
         <li data-md>
-         <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve②②">Resolve</a> <var>p</var> with <var>result</var>.</p>
+         <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve④">Resolve</a> <var>p</var> with <var>result</var>.</p>
        </ol>
       <li data-md>
        <p>Return <var>p</var>.</p>
@@ -2932,15 +1894,15 @@ <h3 class="heading settled" data-level="3.5" id="api-showdirectorypicker"><span
     </div>
     <h3 class="heading settled" data-level="3.6" id="drag-and-drop"><span class="secno">3.6. </span><span class="content">Drag and Drop</span><a class="self-link" href="#drag-and-drop"></a></h3>
 <pre class="idl highlight def"><c- b>partial</c-> <c- b>interface</c-> <a class="idl-code" data-link-type="interface" href="https://html.spec.whatwg.org/multipage/dnd.html#datatransferitem" id="ref-for-datatransferitem"><c- g>DataTransferItem</c-></a> {
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise①⑤"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="#filesystemhandle" id="ref-for-filesystemhandle①⑦"><c- n>FileSystemHandle</c-></a>?> <a class="idl-code" data-link-type="method" href="#dom-datatransferitem-getasfilesystemhandle" id="ref-for-dom-datatransferitem-getasfilesystemhandle"><c- g>getAsFileSystemHandle</c-></a>();
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise⑤"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="https://fs.spec.whatwg.org/#filesystemhandle" id="ref-for-filesystemhandle⑦"><c- n>FileSystemHandle</c-></a>?> <a class="idl-code" data-link-type="method" href="#dom-datatransferitem-getasfilesystemhandle" id="ref-for-dom-datatransferitem-getasfilesystemhandle"><c- g>getAsFileSystemHandle</c-></a>();
 };
 </pre>
     <p>During a <em>drag-and-drop operation</em>, dragged file and
-directory items are associated with <a data-link-type="dfn" href="#file" id="ref-for-file①②">file entries</a> and <a data-link-type="dfn" href="#directory" id="ref-for-directory①⓪">directory entries</a> respectively.</p>
+directory items are associated with <a data-link-type="dfn" href="https://fs.spec.whatwg.org/#file" id="ref-for-file③">file entries</a> and <a data-link-type="dfn" href="https://fs.spec.whatwg.org/#directory" id="ref-for-directory②">directory entries</a> respectively.</p>
     <div class="note domintro" role="note">
      <dt data-md><var>handle</var> = await item . <code class="idl"><a data-link-type="idl" href="#dom-datatransferitem-getasfilesystemhandle" id="ref-for-dom-datatransferitem-getasfilesystemhandle①">getAsFileSystemHandle()</a></code>
      <dd data-md>
-      <p>Returns a <code class="idl"><a data-link-type="idl" href="#filesystemfilehandle" id="ref-for-filesystemfilehandle①③">FileSystemFileHandle</a></code> object if the dragged item is a file and a <code class="idl"><a data-link-type="idl" href="#filesystemdirectoryhandle" id="ref-for-filesystemdirectoryhandle①④">FileSystemDirectoryHandle</a></code> object if the dragged item is a directory.</p>
+      <p>Returns a <code class="idl"><a data-link-type="idl" href="https://fs.spec.whatwg.org/#filesystemfilehandle" id="ref-for-filesystemfilehandle⑤">FileSystemFileHandle</a></code> object if the dragged item is a file and a <code class="idl"><a data-link-type="idl" href="https://fs.spec.whatwg.org/#filesystemdirectoryhandle" id="ref-for-filesystemdirectoryhandle④">FileSystemDirectoryHandle</a></code> object if the dragged item is a directory.</p>
     </div>
     <div class="algorithm" data-algorithm="getAsFileSystemHandle()" data-algorithm-for="DataTransferItem">
      <div class="mdn-anno wrapped">
@@ -2968,26 +1930,26 @@ <h3 class="heading settled" data-level="3.6" id="drag-and-drop"><span class="sec
        <p>If the <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/dnd.html#the-drag-data-item-kind" id="ref-for-the-drag-data-item-kind">the drag data item kind</a> is not <em>File</em>,
   then return <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-promise-resolved-with" id="ref-for-a-promise-resolved-with①">a promise resolved with</a> <code>null</code>.</p>
       <li data-md>
-       <p>Let <var>p</var> be <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-new-promise" id="ref-for-a-new-promise①⑤">a new promise</a>.</p>
+       <p>Let <var>p</var> be <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-new-promise" id="ref-for-a-new-promise⑤">a new promise</a>.</p>
       <li data-md>
-       <p>Run the following steps <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel" id="ref-for-in-parallel①⑦">in parallel</a>:</p>
+       <p>Run the following steps <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel" id="ref-for-in-parallel⑧">in parallel</a>:</p>
        <ol>
         <li data-md>
-         <p>Let <var>entry</var> be the <a data-link-type="dfn" href="#entry" id="ref-for-entry①⑥">entry</a> representing the dragged file or directory.</p>
+         <p>Let <var>entry</var> be the <a data-link-type="dfn" href="https://fs.spec.whatwg.org/#entry" id="ref-for-entry③">file system entry</a> representing the dragged file or directory.</p>
         <li data-md>
-         <p>If <var>entry</var> is a <a data-link-type="dfn" href="#file" id="ref-for-file①③">file entry</a>:</p>
+         <p>If <var>entry</var> is a <a data-link-type="dfn" href="https://fs.spec.whatwg.org/#file" id="ref-for-file④">file entry</a>:</p>
          <ol>
           <li data-md>
-           <p>Let <var>handle</var> be a <code class="idl"><a data-link-type="idl" href="#filesystemfilehandle" id="ref-for-filesystemfilehandle①④">FileSystemFileHandle</a></code> associated with <var>entry</var>.</p>
+           <p>Let <var>handle</var> be a <code class="idl"><a data-link-type="idl" href="https://fs.spec.whatwg.org/#filesystemfilehandle" id="ref-for-filesystemfilehandle⑥">FileSystemFileHandle</a></code> associated with <var>entry</var>.</p>
          </ol>
         <li data-md>
-         <p>Else if <var>entry</var> is a <a data-link-type="dfn" href="#directory" id="ref-for-directory①①">directory entry</a>:</p>
+         <p>Else if <var>entry</var> is a <a data-link-type="dfn" href="https://fs.spec.whatwg.org/#directory" id="ref-for-directory③">directory entry</a>:</p>
          <ol>
           <li data-md>
-           <p>Let <var>handle</var> be a <code class="idl"><a data-link-type="idl" href="#filesystemdirectoryhandle" id="ref-for-filesystemdirectoryhandle①⑤">FileSystemDirectoryHandle</a></code> associated with <var>entry</var>.</p>
+           <p>Let <var>handle</var> be a <code class="idl"><a data-link-type="idl" href="https://fs.spec.whatwg.org/#filesystemdirectoryhandle" id="ref-for-filesystemdirectoryhandle⑤">FileSystemDirectoryHandle</a></code> associated with <var>entry</var>.</p>
          </ol>
         <li data-md>
-         <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve②③">Resolve</a> <var>p</var> with <var>entry</var>.</p>
+         <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve⑤">Resolve</a> <var>p</var> with <var>entry</var>.</p>
        </ol>
       <li data-md>
        <p>Return <var>p</var>.</p>
@@ -3019,65 +1981,17 @@ <h3 class="heading settled" data-level="3.6" id="drag-and-drop"><span class="sec
     </div>
     <p class="issue" id="issue-8306b646"><a class="self-link" href="#issue-8306b646"></a> This currently does not block access to <a data-link-type="dfn" href="#wellknowndirectory-too-sensitive-or-dangerous" id="ref-for-wellknowndirectory-too-sensitive-or-dangerous③">too sensitive or dangerous</a> directories, to
 be consistent with other APIs that give access to dropped files and directories. This is inconsistent
-with the <a data-link-type="dfn" href="#local-file-system-handle-factories" id="ref-for-local-file-system-handle-factories④">local file system handle factories</a> though, so we might want to reconsider this.</p>
-    <h2 class="heading settled" data-level="4" id="sandboxed-filesystem"><span class="secno">4. </span><span class="content">Accessing the Origin Private File System</span><a class="self-link" href="#sandboxed-filesystem"></a></h2>
-    <p>The <dfn data-dfn-for="WellKnownDirectory" data-dfn-type="dfn" data-noexport id="wellknowndirectory-origin-private-file-system">origin private file system<a class="self-link" href="#wellknowndirectory-origin-private-file-system"></a></dfn> is a <a data-link-type="dfn" href="https://storage.spec.whatwg.org/#storage-endpoint" id="ref-for-storage-endpoint">storage endpoint</a> whose <a data-link-type="dfn" href="https://storage.spec.whatwg.org/#storage-endpoint-identifier" id="ref-for-storage-endpoint-identifier">identifier</a> is <code>"fileSystem"</code>, <a data-link-type="dfn" href="https://storage.spec.whatwg.org/#storage-endpoint-types" id="ref-for-storage-endpoint-types">types</a> are <code>« "local" »</code>,
-and <a data-link-type="dfn" href="https://storage.spec.whatwg.org/#storage-endpoint-quota" id="ref-for-storage-endpoint-quota">quota</a> is null.</p>
-    <p class="issue" id="issue-9c98e739"><a class="self-link" href="#issue-9c98e739"></a> Storage endpoints should be defined in <a data-link-type="biblio" href="#biblio-storage">[storage]</a> itself, rather
-than being defined here. So merge this into the table there.</p>
-    <p class="note" role="note"><span>Note:</span> While user agents will typically implement this by persisting the contents of this <a data-link-type="dfn">origin private file system</a> to disk, it is not intended that the contents are easily
-user accessible. Similarly there is no expectation that files or directories with names
-matching the names of children of the <a data-link-type="dfn">origin private file system</a> exist.</p>
-<pre class="idl highlight def">[<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#SecureContext" id="ref-for-SecureContext⑤"><c- g>SecureContext</c-></a>]
-<c- b>partial</c-> <c- b>interface</c-> <a class="idl-code" data-link-type="interface" href="https://storage.spec.whatwg.org/#storagemanager" id="ref-for-storagemanager"><c- g>StorageManager</c-></a> {
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise①⑥"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="#filesystemdirectoryhandle" id="ref-for-filesystemdirectoryhandle①⑥"><c- n>FileSystemDirectoryHandle</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-storagemanager-getdirectory" id="ref-for-dom-storagemanager-getdirectory②"><c- g>getDirectory</c-></a>();
-};
-</pre>
-    <p><strong class="advisement"> In Chrome this functionality was previously exposed as <code>FileSystemDirectoryHandle.getSystemDirectory({type: "sandbox"})</code>.
-This new method is available as of Chrome 85.</strong></p>
-    <div class="note domintro" role="note">
-     <dt data-md><var>directoryHandle</var> = await navigator . storage . <code class="idl"><a data-link-type="idl" href="#dom-storagemanager-getdirectory" id="ref-for-dom-storagemanager-getdirectory③">getDirectory()</a></code>
-     <dd data-md>
-      <p>Returns the root directory of the origin private file system.</p>
-    </div>
-    <div class="algorithm" data-algorithm="getDirectory()" data-algorithm-for="StorageManager">
-      The <dfn class="dfn-paneled idl-code" data-dfn-for="StorageManager" data-dfn-type="method" data-export id="dom-storagemanager-getdirectory"><code>getDirectory()</code></dfn> method, when
-invoked, must run these steps: 
-     <ol>
-      <li data-md>
-       <p>Let <var>environment</var> be the <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#current-settings-object" id="ref-for-current-settings-object">current settings object</a>.</p>
-      <li data-md>
-       <p>Let <var>map</var> be the result of running <a data-link-type="dfn" href="https://storage.spec.whatwg.org/#obtain-a-local-storage-bottle-map" id="ref-for-obtain-a-local-storage-bottle-map">obtain a local storage bottle map</a> with <var>environment</var> and <code>"fileSystem"</code>. If this returns failure,
- return <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-promise-rejected-with" id="ref-for-a-promise-rejected-with③">a promise rejected with</a> a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#securityerror" id="ref-for-securityerror⑥">SecurityError</a></code>.</p>
-      <li data-md>
-       <p>If <var>map</var>["root"] does not <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#map-exists" id="ref-for-map-exists⑤">exist</a>:</p>
-       <ol>
-        <li data-md>
-         <p>Let <var>dir</var> be a new <a data-link-type="dfn" href="#directory" id="ref-for-directory①②">directory entry</a>.</p>
-        <li data-md>
-         <p>Set <var>dir</var>’s <a data-link-type="dfn" href="#entry-name" id="ref-for-entry-name①③">name</a> to <code>""</code>.</p>
-        <li data-md>
-         <p>Set <var>dir</var>’s <a data-link-type="dfn" href="#directory-entry-children" id="ref-for-directory-entry-children①②">children</a> to an empty <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#ordered-set" id="ref-for-ordered-set③">set</a>.</p>
-        <li data-md>
-         <p>Set <var>map</var>["root"] to <var>dir</var>.</p>
-       </ol>
-      <li data-md>
-       <p>Return <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-promise-resolved-with" id="ref-for-a-promise-resolved-with②">a promise resolved with</a> a new <code class="idl"><a data-link-type="idl" href="#filesystemdirectoryhandle" id="ref-for-filesystemdirectoryhandle①⑦">FileSystemDirectoryHandle</a></code>,
- whose associated <a data-link-type="dfn" href="#filesystemhandle-entry" id="ref-for-filesystemhandle-entry②③">entry</a> is <var>map</var>["root"].</p>
-     </ol>
-    </div>
-    <p class="note" role="note"><span>Note:</span> In Chrome the directory entry returned by the above algorithm refers to the same storage as the <a href="https://dev.w3.org/2009/dap/file-system/file-dir-sys.html#dfn-temporary">temporary
-file system</a> as used to be defined in <a data-link-type="biblio" href="#biblio-file-system-api">File API: Directories and System</a>.</p>
-    <h2 class="heading settled" data-level="5" id="accessibility-considerations"><span class="secno">5. </span><span class="content">Accessibility Considerations</span><a class="self-link" href="#accessibility-considerations"></a></h2>
+with the <a data-link-type="dfn" href="#local-file-system-handle-factories" id="ref-for-local-file-system-handle-factories③">local file system handle factories</a> though, so we might want to reconsider this.</p>
+    <h2 class="heading settled" data-level="4" id="accessibility-considerations"><span class="secno">4. </span><span class="content">Accessibility Considerations</span><a class="self-link" href="#accessibility-considerations"></a></h2>
     <p><em>This section is non-normative.</em></p>
     <p>When this specification is used to present information in the user interface,
 implementors will want to follow the OS level accessibility guidelines for the platform.</p>
-    <h2 class="heading settled" data-level="6" id="privacy-considerations"><span class="secno">6. </span><span class="content">Privacy Considerations</span><a class="self-link" href="#privacy-considerations"></a></h2>
+    <h2 class="heading settled" data-level="5" id="privacy-considerations"><span class="secno">5. </span><span class="content">Privacy Considerations</span><a class="self-link" href="#privacy-considerations"></a></h2>
     <p><em>This section is non-normative.</em></p>
     <p>This API does not give websites any more read access to data than the existing <code>&lt;input type=file></code> and <code>&lt;input type=file webkitdirectory></code> APIs already do. Furthermore similarly to those APIs, all
 access to files and directories is explicitly gated behind a file or directory picker.</p>
     <p>There are however several major privacy risks with this new API:</p>
-    <h3 class="heading settled" data-level="6.1" id="privacy-wide-access"><span class="secno">6.1. </span><span class="content">Users giving access to more, or more sensitive files than they intended.</span><a class="self-link" href="#privacy-wide-access"></a></h3>
+    <h3 class="heading settled" data-level="5.1" id="privacy-wide-access"><span class="secno">5.1. </span><span class="content">Users giving access to more, or more sensitive files than they intended.</span><a class="self-link" href="#privacy-wide-access"></a></h3>
     <p>This isn’t a new risk with this API, but user agents should try to make sure that users are aware
 of what exactly they’re giving websites access to. This is particularly important when giving
 access to a directory, where it might not be immediately clear to a user just how many files
@@ -3117,7 +2031,7 @@ <h3 class="heading settled" data-level="6.1" id="privacy-wide-access"><span clas
 Windows uses these files to decide what DLLs to load, and as such writing to
 these files could be used to cause code to be executed.</p>
     </ul>
-    <h3 class="heading settled" data-level="6.2" id="privacy-tracking"><span class="secno">6.2. </span><span class="content">Websites trying to use this API for tracking.</span><a class="self-link" href="#privacy-tracking"></a></h3>
+    <h3 class="heading settled" data-level="5.2" id="privacy-tracking"><span class="secno">5.2. </span><span class="content">Websites trying to use this API for tracking.</span><a class="self-link" href="#privacy-tracking"></a></h3>
     <p>This API could be used by websites to track the user across clearing browsing
 data. This is because, in contrast with existing file access APIs, user agents are
 able to grant persistent access to files or directories and can re-prompt. In
@@ -3132,41 +2046,41 @@ <h3 class="heading settled" data-level="6.2" id="privacy-tracking"><span class="
 origins (for example persistent permissions could be limited to "installed" web applications).</p>
     <p>User agents also are encouraged to provide a way for users to revoke permissions granted.
 Clearing browsing data is expected to revoke all permissions as well.</p>
-    <h3 class="heading settled" data-level="6.3" id="privacy-third-party"><span class="secno">6.3. </span><span class="content">First-party vs third-party contexts.</span><a class="self-link" href="#privacy-third-party"></a></h3>
+    <h3 class="heading settled" data-level="5.3" id="privacy-third-party"><span class="secno">5.3. </span><span class="content">First-party vs third-party contexts.</span><a class="self-link" href="#privacy-third-party"></a></h3>
     <p>In third-party contexts (e.g. an iframe whose origin does not match that of the top-level frame)
 websites can’t gain access to data they don’t already have access to. This includes both getting
-access to new files or directories via the <a data-link-type="dfn" href="#local-file-system-handle-factories" id="ref-for-local-file-system-handle-factories⑤">local file system handle factories</a>, as well as requesting
+access to new files or directories via the <a data-link-type="dfn" href="#local-file-system-handle-factories" id="ref-for-local-file-system-handle-factories④">local file system handle factories</a>, as well as requesting
 more permissions to existing handles via the <code class="idl"><a data-link-type="idl" href="#dom-filesystemhandle-requestpermission" id="ref-for-dom-filesystemhandle-requestpermission⑦">requestPermission</a></code> API.</p>
     <p>Handles can also only be post-messaged to same-origin destinations. Attempts to send a handle to
 a cross-origin destination will result in a <code class="idl"><a data-link-type="idl" href="https://html.spec.whatwg.org/multipage/indices.html#event-messageerror" id="ref-for-event-messageerror">messageerror</a></code> event.</p>
-    <h2 class="heading settled" data-level="7" id="security-considerations"><span class="secno">7. </span><span class="content">Security Considerations</span><a class="self-link" href="#security-considerations"></a></h2>
+    <h2 class="heading settled" data-level="6" id="security-considerations"><span class="secno">6. </span><span class="content">Security Considerations</span><a class="self-link" href="#security-considerations"></a></h2>
     <p><em>This section is non-normative.</em></p>
     <p>This API gives websites the ability to modify existing files on disk, as well as write to new
 files. This has a couple of important security considerations:</p>
-    <h3 class="heading settled" data-level="7.1" id="security-malware"><span class="secno">7.1. </span><span class="content">Malware</span><a class="self-link" href="#security-malware"></a></h3>
+    <h3 class="heading settled" data-level="6.1" id="security-malware"><span class="secno">6.1. </span><span class="content">Malware</span><a class="self-link" href="#security-malware"></a></h3>
     <p>This API could be used by websites to try to store and/or execute malware on the users system.
 To mitigate this risk, this API does not provide any way to mark files as executable (on the other
 hand files that are already executable likely remain that way, even after the files are modified
 through this API). Furthermore user agents are encouraged to apply things like Mark-of-the-Web to
 files created or modified by this API.</p>
-    <p>Finally, user agents are encouraged to verify the contents of files modified by this API via <dfn class="dfn-paneled" data-dfn-for="WellKnownDirectory" data-dfn-type="dfn" data-lt="malware scans and safe browsing checks" data-noexport id="wellknowndirectory-malware-scans-and-safe-browsing-checks">malware
-scans and safe browsing checks</dfn>, unless some kind of external strong trust relation already exists.
+    <p>Finally, user agents are encouraged to verify the contents of files modified by this API via malware
+scans and safe browsing checks, unless some kind of external strong trust relation already exists.
 This of course has effects on the performance characteristics of this API.</p>
-    <h3 class="heading settled" data-level="7.2" id="security-ransomware"><span class="secno">7.2. </span><span class="content">Ransomware attacks</span><a class="self-link" href="#security-ransomware"></a></h3>
+    <h3 class="heading settled" data-level="6.2" id="security-ransomware"><span class="secno">6.2. </span><span class="content">Ransomware attacks</span><a class="self-link" href="#security-ransomware"></a></h3>
     <p>Another risk factor is that of ransomware attacks. The limitations described above regarding
 blocking access to certain sensitive directories helps limit the damage such an attack can do.
 Additionally user agents can grant write access to files at whatever granularity they deem
 appropriate.</p>
-    <h3 class="heading settled" data-level="7.3" id="filling-up-disk"><span class="secno">7.3. </span><span class="content">Filling up a users disk</span><a class="self-link" href="#filling-up-disk"></a></h3>
-    <p>Other than files in the <a data-link-type="dfn">origin private file system</a>, files written by this API are not subject
-to <a data-link-type="dfn" href="https://storage.spec.whatwg.org/#storage-quota" id="ref-for-storage-quota④">storage quota</a>. As such websites can fill up a users disk without being limited by
+    <h3 class="heading settled" data-level="6.3" id="filling-up-disk"><span class="secno">6.3. </span><span class="content">Filling up a users disk</span><a class="self-link" href="#filling-up-disk"></a></h3>
+    <p>Other than files in the <a data-link-type="dfn" href="https://fs.spec.whatwg.org/#origin-private-file-system" id="ref-for-origin-private-file-system③">origin private file system</a>, files written by this API are not subject
+to <a data-link-type="dfn" href="https://storage.spec.whatwg.org/#storage-quota" id="ref-for-storage-quota">storage quota</a>. As such websites can fill up a users disk without being limited by
 quota, which could leave a users device in a bad state (do note that even with storage that is
-subject to <a data-link-type="dfn" href="https://storage.spec.whatwg.org/#storage-quota" id="ref-for-storage-quota⑤">storage quota</a> it is still possible to fill up, or come close to filling up, a users
-disk, since <a data-link-type="dfn" href="https://storage.spec.whatwg.org/#storage-quota" id="ref-for-storage-quota⑥">storage quota</a> in general is not dependent on the amount of available disk
+subject to <a data-link-type="dfn" href="https://storage.spec.whatwg.org/#storage-quota" id="ref-for-storage-quota①">storage quota</a> it is still possible to fill up, or come close to filling up, a users
+disk, since <a data-link-type="dfn" href="https://storage.spec.whatwg.org/#storage-quota" id="ref-for-storage-quota②">storage quota</a> in general is not dependent on the amount of available disk
 space).</p>
     <p>Without this API websites can write data to disk not subject to quota limitations already
 by triggering downloads of large files (potentially created client side, to not incur any network
-overhead). While the presence of <code class="idl"><a data-link-type="idl" href="#dom-filesystemwritablefilestream-truncate" id="ref-for-dom-filesystemwritablefilestream-truncate③">truncate()</a></code> and writing at a
+overhead). While the presence of <code class="idl"><a data-link-type="idl" href="https://fs.spec.whatwg.org/#dom-filesystemwritablefilestream-truncate" id="ref-for-dom-filesystemwritablefilestream-truncate">truncate()</a></code> and writing at a
 potentially really large offset past the end of a file makes it much easier and lower cost to
 create large files, on most file systems such files should not actually take up as much disk space as
 most commonly used file systems support sparse files (and thus wouldn’t actually store the NUL
@@ -3222,62 +2136,20 @@ <h2 class="no-num no-ref heading settled" id="index"><span class="content">Index
   <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="content">Terms defined by this specification</span><a class="self-link" href="#index-defined-here"></a></h3>
   <ul class="index">
    <li><a href="#dom-filepickeraccepttype-accept">accept</a><span>, in § 3</span>
-   <li><a href="#file-entry-binary-data">binary data</a><span>, in § 2.1</span>
-   <li><a href="#filesystemwritablefilestream-buffer">[[buffer]]</a><span>, in § 2.6</span>
-   <li><a href="#directory-entry-children">children</a><span>, in § 2.1</span>
-   <li>
-    create
-    <ul>
-     <li><a href="#dom-filesystemgetdirectoryoptions-create">dict-member for FileSystemGetDirectoryOptions</a><span>, in § 2.5</span>
-     <li><a href="#dom-filesystemgetfileoptions-create">dict-member for FileSystemGetFileOptions</a><span>, in § 2.5</span>
-    </ul>
-   <li><a href="#create-a-new-filesystemwritablefilestream">create a new FileSystemWritableFileStream</a><span>, in § 2.6</span>
-   <li><a href="#dom-filesystemfilehandle-createwritable">createWritable()</a><span>, in § 2.4.2</span>
-   <li><a href="#dom-filesystemfilehandle-createwritable">createWritable(options)</a><span>, in § 2.4.2</span>
-   <li><a href="#dom-writeparams-data">data</a><span>, in § 2.6</span>
    <li><a href="#dom-filepickeraccepttype-description">description</a><span>, in § 3</span>
    <li><a href="#dom-wellknowndirectory-desktop">"desktop"</a><span>, in § 3.2.2</span>
    <li><a href="#wellknowndirectory-determine-the-directory-the-picker-will-start-in">determine the directory the picker will start in</a><span>, in § 3.2.2</span>
-   <li><a href="#dom-filesystemhandlekind-directory">"directory"</a><span>, in § 2.3</span>
-   <li><a href="#directory">directory</a><span>, in § 2.1</span>
-   <li><a href="#directory">directory entry</a><span>, in § 2.1</span>
    <li><a href="#dictdef-directorypickeroptions">DirectoryPickerOptions</a><span>, in § 3</span>
    <li><a href="#dom-wellknowndirectory-documents">"documents"</a><span>, in § 3.2.2</span>
    <li><a href="#dom-wellknowndirectory-downloads">"downloads"</a><span>, in § 3.2.2</span>
-   <li>
-    entry
-    <ul>
-     <li><a href="#entry">definition of</a><span>, in § 2.1</span>
-     <li><a href="#filesystemhandle-entry">dfn for FileSystemHandle</a><span>, in § 2.3</span>
-    </ul>
    <li><a href="#dom-filepickeroptions-excludeacceptalloption">excludeAcceptAllOption</a><span>, in § 3</span>
-   <li><a href="#dom-filesystemhandlekind-file">"file"</a><span>, in § 2.3</span>
-   <li><a href="#filesystemwritablefilestream-file">[[file]]</a><span>, in § 2.6</span>
-   <li><a href="#file">file</a><span>, in § 2.1</span>
-   <li><a href="#file">file entry</a><span>, in § 2.1</span>
    <li><a href="#dictdef-filepickeraccepttype">FilePickerAcceptType</a><span>, in § 3</span>
    <li><a href="#dictdef-filepickeroptions">FilePickerOptions</a><span>, in § 3</span>
    <li><a href="#dom-permissionname-file-system">"file-system"</a><span>, in § 2.2</span>
-   <li><a href="#dictdef-filesystemcreatewritableoptions">FileSystemCreateWritableOptions</a><span>, in § 2.4</span>
-   <li><a href="#filesystemdirectoryhandle">FileSystemDirectoryHandle</a><span>, in § 2.5</span>
-   <li><a href="#filesystemfilehandle">FileSystemFileHandle</a><span>, in § 2.4</span>
-   <li><a href="#dictdef-filesystemgetdirectoryoptions">FileSystemGetDirectoryOptions</a><span>, in § 2.5</span>
-   <li><a href="#dictdef-filesystemgetfileoptions">FileSystemGetFileOptions</a><span>, in § 2.5</span>
-   <li><a href="#filesystemhandle">FileSystemHandle</a><span>, in § 2.3</span>
-   <li><a href="#enumdef-filesystemhandlekind">FileSystemHandleKind</a><span>, in § 2.3</span>
    <li><a href="#dictdef-filesystemhandlepermissiondescriptor">FileSystemHandlePermissionDescriptor</a><span>, in § 2.3</span>
    <li><a href="#dictdef-filesystempermissiondescriptor">FileSystemPermissionDescriptor</a><span>, in § 2.2</span>
    <li><a href="#enumdef-filesystempermissionmode">FileSystemPermissionMode</a><span>, in § 2.2</span>
-   <li><a href="#dictdef-filesystemremoveoptions">FileSystemRemoveOptions</a><span>, in § 2.5</span>
-   <li><a href="#filesystemwritablefilestream">FileSystemWritableFileStream</a><span>, in § 2.6</span>
-   <li><a href="#typedefdef-filesystemwritechunktype">FileSystemWriteChunkType</a><span>, in § 2.6</span>
    <li><a href="#dom-datatransferitem-getasfilesystemhandle">getAsFileSystemHandle()</a><span>, in § 3.6</span>
-   <li><a href="#dom-storagemanager-getdirectory">getDirectory()</a><span>, in § 4</span>
-   <li><a href="#dom-filesystemdirectoryhandle-getdirectoryhandle">getDirectoryHandle(name)</a><span>, in § 2.5.3</span>
-   <li><a href="#dom-filesystemdirectoryhandle-getdirectoryhandle">getDirectoryHandle(name, options)</a><span>, in § 2.5.3</span>
-   <li><a href="#dom-filesystemfilehandle-getfile">getFile()</a><span>, in § 2.4.1</span>
-   <li><a href="#dom-filesystemdirectoryhandle-getfilehandle">getFileHandle(name)</a><span>, in § 2.5.2</span>
-   <li><a href="#dom-filesystemdirectoryhandle-getfilehandle">getFileHandle(name, options)</a><span>, in § 2.5.2</span>
    <li><a href="#dom-filesystempermissiondescriptor-handle">handle</a><span>, in § 2.2</span>
    <li>
     id
@@ -3286,11 +2158,7 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
      <li><a href="#dom-filepickeroptions-id">dict-member for FilePickerOptions</a><span>, in § 3</span>
     </ul>
    <li><a href="#is-allowed-to-show-a-file-picker">is allowed to show a file picker</a><span>, in § 3.1</span>
-   <li><a href="#dom-filesystemhandle-issameentry">isSameEntry(other)</a><span>, in § 2.3.1</span>
-   <li><a href="#dom-filesystemcreatewritableoptions-keepexistingdata">keepExistingData</a><span>, in § 2.4</span>
-   <li><a href="#dom-filesystemhandle-kind">kind</a><span>, in § 2.3</span>
    <li><a href="#local-file-system-handle-factories">local file system handle factories</a><span>, in § 3</span>
-   <li><a href="#wellknowndirectory-malware-scans-and-safe-browsing-checks">malware scans and safe browsing checks</a><span>, in § 7.1</span>
    <li>
     mode
     <ul>
@@ -3298,51 +2166,31 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
      <li><a href="#dom-filesystemhandlepermissiondescriptor-mode">dict-member for FileSystemHandlePermissionDescriptor</a><span>, in § 2.3</span>
      <li><a href="#dom-filesystempermissiondescriptor-mode">dict-member for FileSystemPermissionDescriptor</a><span>, in § 2.2</span>
     </ul>
-   <li><a href="#file-entry-modification-timestamp">modification timestamp</a><span>, in § 2.1</span>
    <li><a href="#dom-openfilepickeroptions-multiple">multiple</a><span>, in § 3</span>
    <li><a href="#dom-wellknowndirectory-music">"music"</a><span>, in § 3.2.2</span>
-   <li>
-    name
-    <ul>
-     <li><a href="#dom-filesystemhandle-name">attribute for FileSystemHandle</a><span>, in § 2.3</span>
-     <li><a href="#entry-name">dfn for entry</a><span>, in § 2.1</span>
-    </ul>
    <li><a href="#dictdef-openfilepickeroptions">OpenFilePickerOptions</a><span>, in § 3</span>
-   <li><a href="#wellknowndirectory-origin-private-file-system">origin private file system</a><span>, in § 4</span>
-   <li><a href="#entry-parent">parent</a><span>, in § 2.1</span>
-   <li><a href="#filesystemdirectoryhandle-iterator-past-results">past results</a><span>, in § 2.5.1</span>
    <li><a href="#path-id-map">path id map</a><span>, in § 3.2.2</span>
    <li><a href="#dom-wellknowndirectory-pictures">"pictures"</a><span>, in § 3.2.2</span>
-   <li><a href="#dom-writeparams-position">position</a><span>, in § 2.6</span>
    <li><a href="#process-accept-types">process accept types</a><span>, in § 3.2.1</span>
    <li><a href="#querying-file-system-permission">query file system permission</a><span>, in § 2.2</span>
    <li><a href="#querying-file-system-permission">querying file system permission</a><span>, in § 2.2</span>
-   <li><a href="#dom-filesystemhandle-querypermission">queryPermission()</a><span>, in § 2.3.2</span>
-   <li><a href="#dom-filesystemhandle-querypermission">queryPermission(descriptor)</a><span>, in § 2.3.2</span>
+   <li><a href="#dom-filesystemhandle-querypermission">queryPermission()</a><span>, in § 2.3.1</span>
+   <li><a href="#dom-filesystemhandle-querypermission">queryPermission(descriptor)</a><span>, in § 2.3.1</span>
    <li><a href="#dom-filesystempermissionmode-read">"read"</a><span>, in § 2.2</span>
    <li><a href="#dom-filesystempermissionmode-readwrite">"readwrite"</a><span>, in § 2.2</span>
    <li><a href="#recently-picked-directory-map">recently picked directory map</a><span>, in § 3.2.2</span>
-   <li><a href="#dom-filesystemremoveoptions-recursive">recursive</a><span>, in § 2.5</span>
    <li><a href="#wellknowndirectory-remember-a-picked-directory">remember a picked directory</a><span>, in § 3.2.2</span>
-   <li><a href="#dom-filesystemdirectoryhandle-removeentry">removeEntry(name)</a><span>, in § 2.5.4</span>
-   <li><a href="#dom-filesystemdirectoryhandle-removeentry">removeEntry(name, options)</a><span>, in § 2.5.4</span>
    <li><a href="#requesting-file-system-permission">request file system permission</a><span>, in § 2.2</span>
    <li><a href="#requesting-file-system-permission">requesting file system permission</a><span>, in § 2.2</span>
-   <li><a href="#dom-filesystemhandle-requestpermission">requestPermission()</a><span>, in § 2.3.3</span>
-   <li><a href="#dom-filesystemhandle-requestpermission">requestPermission(descriptor)</a><span>, in § 2.3.3</span>
-   <li><a href="#entry-resolve">resolve</a><span>, in § 2.1</span>
-   <li><a href="#dom-filesystemdirectoryhandle-resolve">resolve(possibleDescendant)</a><span>, in § 2.5.5</span>
+   <li><a href="#dom-filesystemhandle-requestpermission">requestPermission()</a><span>, in § 2.3.2</span>
+   <li><a href="#dom-filesystemhandle-requestpermission">requestPermission(descriptor)</a><span>, in § 2.3.2</span>
    <li><a href="#dictdef-savefilepickeroptions">SaveFilePickerOptions</a><span>, in § 3</span>
-   <li><a href="#dom-writecommandtype-seek">"seek"</a><span>, in § 2.6</span>
-   <li><a href="#filesystemwritablefilestream-seekoffset">[[seekOffset]]</a><span>, in § 2.6</span>
-   <li><a href="#dom-filesystemwritablefilestream-seek">seek(position)</a><span>, in § 2.6.2</span>
    <li><a href="#dom-window-showdirectorypicker">showDirectoryPicker()</a><span>, in § 3.5</span>
    <li><a href="#dom-window-showdirectorypicker">showDirectoryPicker(options)</a><span>, in § 3.5</span>
    <li><a href="#dom-window-showopenfilepicker">showOpenFilePicker()</a><span>, in § 3.3</span>
    <li><a href="#dom-window-showopenfilepicker">showOpenFilePicker(options)</a><span>, in § 3.3</span>
    <li><a href="#dom-window-showsavefilepicker">showSaveFilePicker()</a><span>, in § 3.4</span>
    <li><a href="#dom-window-showsavefilepicker">showSaveFilePicker(options)</a><span>, in § 3.4</span>
-   <li><a href="#dom-writeparams-size">size</a><span>, in § 2.6</span>
    <li>
     startIn
     <ul>
@@ -3351,83 +2199,100 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
     </ul>
    <li><a href="#typedefdef-startindirectory">StartInDirectory</a><span>, in § 3</span>
    <li><a href="#dom-savefilepickeroptions-suggestedname">suggestedName</a><span>, in § 3</span>
-   <li><a href="#entry-the-same-as">the same as</a><span>, in § 2.1</span>
-   <li><a href="#wellknowndirectory-too-sensitive-or-dangerous">too sensitive or dangerous</a><span>, in § 6.1</span>
-   <li><a href="#dom-writecommandtype-truncate">"truncate"</a><span>, in § 2.6</span>
-   <li><a href="#dom-filesystemwritablefilestream-truncate">truncate(size)</a><span>, in § 2.6.3</span>
-   <li><a href="#dom-writeparams-type">type</a><span>, in § 2.6</span>
+   <li><a href="#wellknowndirectory-too-sensitive-or-dangerous">too sensitive or dangerous</a><span>, in § 5.1</span>
    <li><a href="#dom-filepickeroptions-types">types</a><span>, in § 3</span>
    <li><a href="#validate-a-suffix">validate a suffix</a><span>, in § 3.2.1</span>
-   <li><a href="#valid-file-name">valid file name</a><span>, in § 2.1</span>
    <li><a href="#valid-path-id">valid path id</a><span>, in § 3.2.2</span>
    <li><a href="#valid-suffix-code-point">valid suffix code point</a><span>, in § 2.1</span>
    <li><a href="#dom-wellknowndirectory-videos">"videos"</a><span>, in § 3.2.2</span>
    <li><a href="#enumdef-wellknowndirectory">WellKnownDirectory</a><span>, in § 3.2.2</span>
-   <li><a href="#dom-writecommandtype-write">"write"</a><span>, in § 2.6</span>
-   <li><a href="#write-a-chunk">write a chunk</a><span>, in § 2.6</span>
-   <li><a href="#enumdef-writecommandtype">WriteCommandType</a><span>, in § 2.6</span>
-   <li><a href="#dom-filesystemwritablefilestream-write">write(data)</a><span>, in § 2.6.1</span>
-   <li><a href="#dictdef-writeparams">WriteParams</a><span>, in § 2.6</span>
   </ul>
-  <aside class="dfn-panel" data-for="term-for-realm">
-   <a href="https://tc39.github.io/ecma262/#realm">https://tc39.github.io/ecma262/#realm</a><b>Referenced in:</b>
+  <aside class="dfn-panel" data-for="term-for-filesystemdirectoryhandle">
+   <a href="https://fs.spec.whatwg.org/#filesystemdirectoryhandle">https://fs.spec.whatwg.org/#filesystemdirectoryhandle</a><b>Referenced in:</b>
+   <ul>
+    <li><a href="#ref-for-filesystemdirectoryhandle">3. Accessing Local File System</a>
+    <li><a href="#ref-for-filesystemdirectoryhandle①">3.2.2. Starting Directory</a> <a href="#ref-for-filesystemdirectoryhandle②">(2)</a>
+    <li><a href="#ref-for-filesystemdirectoryhandle③">3.5. The showDirectoryPicker() method</a>
+    <li><a href="#ref-for-filesystemdirectoryhandle④">3.6. Drag and Drop</a> <a href="#ref-for-filesystemdirectoryhandle⑤">(2)</a>
+   </ul>
+  </aside>
+  <aside class="dfn-panel" data-for="term-for-filesystemfilehandle">
+   <a href="https://fs.spec.whatwg.org/#filesystemfilehandle">https://fs.spec.whatwg.org/#filesystemfilehandle</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-realm">2.6. The FileSystemWritableFileStream interface</a>
+    <li><a href="#ref-for-filesystemfilehandle">3. Accessing Local File System</a> <a href="#ref-for-filesystemfilehandle①">(2)</a>
+    <li><a href="#ref-for-filesystemfilehandle②">3.2.2. Starting Directory</a>
+    <li><a href="#ref-for-filesystemfilehandle③">3.3. The showOpenFilePicker() method</a>
+    <li><a href="#ref-for-filesystemfilehandle④">3.4. The showSaveFilePicker() method</a>
+    <li><a href="#ref-for-filesystemfilehandle⑤">3.6. Drag and Drop</a> <a href="#ref-for-filesystemfilehandle⑥">(2)</a>
    </ul>
   </aside>
-  <aside class="dfn-panel" data-for="term-for-utf-8-encode">
-   <a href="https://encoding.spec.whatwg.org/#utf-8-encode">https://encoding.spec.whatwg.org/#utf-8-encode</a><b>Referenced in:</b>
+  <aside class="dfn-panel" data-for="term-for-filesystemhandle">
+   <a href="https://fs.spec.whatwg.org/#filesystemhandle">https://fs.spec.whatwg.org/#filesystemhandle</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-utf-8-encode">2.6. The FileSystemWritableFileStream interface</a>
+    <li><a href="#ref-for-filesystemhandle">2.2. Permissions</a> <a href="#ref-for-filesystemhandle①">(2)</a> <a href="#ref-for-filesystemhandle②">(3)</a>
+    <li><a href="#ref-for-filesystemhandle③">2.3. The FileSystemHandle interface</a> <a href="#ref-for-filesystemhandle④">(2)</a>
+    <li><a href="#ref-for-filesystemhandle⑤">3. Accessing Local File System</a>
+    <li><a href="#ref-for-filesystemhandle⑥">3.2.2. Starting Directory</a>
+    <li><a href="#ref-for-filesystemhandle⑦">3.6. Drag and Drop</a>
    </ul>
   </aside>
-  <aside class="dfn-panel" data-for="term-for-dfn-Blob">
-   <a href="https://w3c.github.io/FileAPI/#dfn-Blob">https://w3c.github.io/FileAPI/#dfn-Blob</a><b>Referenced in:</b>
+  <aside class="dfn-panel" data-for="term-for-file-entry-binary-data">
+   <a href="https://fs.spec.whatwg.org/#file-entry-binary-data">https://fs.spec.whatwg.org/#file-entry-binary-data</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-dfn-Blob">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-dfn-Blob①">(2)</a> <a href="#ref-for-dfn-Blob②">(3)</a>
+    <li><a href="#ref-for-file-entry-binary-data">3.4. The showSaveFilePicker() method</a>
    </ul>
   </aside>
-  <aside class="dfn-panel" data-for="term-for-dfn-file">
-   <a href="https://w3c.github.io/FileAPI/#dfn-file">https://w3c.github.io/FileAPI/#dfn-file</a><b>Referenced in:</b>
+  <aside class="dfn-panel" data-for="term-for-directory">
+   <a href="https://fs.spec.whatwg.org/#directory">https://fs.spec.whatwg.org/#directory</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-dfn-file">2.4. The FileSystemFileHandle interface</a>
-    <li><a href="#ref-for-dfn-file①">2.4.1. The getFile() method</a> <a href="#ref-for-dfn-file②">(2)</a> <a href="#ref-for-dfn-file③">(3)</a>
+    <li><a href="#ref-for-directory">3.2.2. Starting Directory</a>
+    <li><a href="#ref-for-directory①">3.5. The showDirectoryPicker() method</a>
+    <li><a href="#ref-for-directory②">3.6. Drag and Drop</a> <a href="#ref-for-directory③">(2)</a>
    </ul>
   </aside>
-  <aside class="dfn-panel" data-for="term-for-dfn-lastModified">
-   <a href="https://w3c.github.io/FileAPI/#dfn-lastModified">https://w3c.github.io/FileAPI/#dfn-lastModified</a><b>Referenced in:</b>
+  <aside class="dfn-panel" data-for="term-for-filesystemhandle-entry">
+   <a href="https://fs.spec.whatwg.org/#filesystemhandle-entry">https://fs.spec.whatwg.org/#filesystemhandle-entry</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-dfn-lastModified">2.4.1. The getFile() method</a>
+    <li><a href="#ref-for-filesystemhandle-entry">2.2. Permissions</a>
+    <li><a href="#ref-for-filesystemhandle-entry①">3.2.2. Starting Directory</a>
    </ul>
   </aside>
-  <aside class="dfn-panel" data-for="term-for-dfn-name">
-   <a href="https://w3c.github.io/FileAPI/#dfn-name">https://w3c.github.io/FileAPI/#dfn-name</a><b>Referenced in:</b>
+  <aside class="dfn-panel" data-for="term-for-file">
+   <a href="https://fs.spec.whatwg.org/#file">https://fs.spec.whatwg.org/#file</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-dfn-name">2.4.1. The getFile() method</a>
+    <li><a href="#ref-for-file">3.2.2. Starting Directory</a>
+    <li><a href="#ref-for-file①">3.3. The showOpenFilePicker() method</a>
+    <li><a href="#ref-for-file②">3.4. The showSaveFilePicker() method</a>
+    <li><a href="#ref-for-file③">3.6. Drag and Drop</a> <a href="#ref-for-file④">(2)</a>
    </ul>
   </aside>
-  <aside class="dfn-panel" data-for="term-for-readOperation">
-   <a href="https://w3c.github.io/FileAPI/#readOperation">https://w3c.github.io/FileAPI/#readOperation</a><b>Referenced in:</b>
+  <aside class="dfn-panel" data-for="term-for-entry">
+   <a href="https://fs.spec.whatwg.org/#entry">https://fs.spec.whatwg.org/#entry</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-readOperation">2.6. The FileSystemWritableFileStream interface</a>
+    <li><a href="#ref-for-entry">2.2. Permissions</a>
+    <li><a href="#ref-for-entry①">3.2.2. Starting Directory</a> <a href="#ref-for-entry②">(2)</a>
+    <li><a href="#ref-for-entry③">3.6. Drag and Drop</a>
    </ul>
   </aside>
-  <aside class="dfn-panel" data-for="term-for-snapshot-state">
-   <a href="https://w3c.github.io/FileAPI/#snapshot-state">https://w3c.github.io/FileAPI/#snapshot-state</a><b>Referenced in:</b>
+  <aside class="dfn-panel" data-for="term-for-origin-private-file-system">
+   <a href="https://fs.spec.whatwg.org/#origin-private-file-system">https://fs.spec.whatwg.org/#origin-private-file-system</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-snapshot-state">2.4.1. The getFile() method</a>
+    <li><a href="#ref-for-origin-private-file-system">1. Introduction</a>
+    <li><a href="#ref-for-origin-private-file-system①">2.2. Permissions</a>
+    <li><a href="#ref-for-origin-private-file-system②">3.2.2. Starting Directory</a>
+    <li><a href="#ref-for-origin-private-file-system③">6.3. Filling up a users disk</a>
    </ul>
   </aside>
-  <aside class="dfn-panel" data-for="term-for-dfn-type">
-   <a href="https://w3c.github.io/FileAPI/#dfn-type">https://w3c.github.io/FileAPI/#dfn-type</a><b>Referenced in:</b>
+  <aside class="dfn-panel" data-for="term-for-entry-parent">
+   <a href="https://fs.spec.whatwg.org/#entry-parent">https://fs.spec.whatwg.org/#entry-parent</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-dfn-type">2.4.1. The getFile() method</a>
+    <li><a href="#ref-for-entry-parent">2.2. Permissions</a> <a href="#ref-for-entry-parent①">(2)</a>
    </ul>
   </aside>
-  <aside class="dfn-panel" data-for="term-for-UnixEpoch">
-   <a href="https://w3c.github.io/FileAPI/#UnixEpoch">https://w3c.github.io/FileAPI/#UnixEpoch</a><b>Referenced in:</b>
+  <aside class="dfn-panel" data-for="term-for-dom-filesystemwritablefilestream-truncate">
+   <a href="https://fs.spec.whatwg.org/#dom-filesystemwritablefilestream-truncate">https://fs.spec.whatwg.org/#dom-filesystemwritablefilestream-truncate</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-UnixEpoch">2.1. Concepts</a>
+    <li><a href="#ref-for-dom-filesystemwritablefilestream-truncate">6.3. Filling up a users disk</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-datatransferitem">
@@ -3440,8 +2305,6 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
    <a href="https://html.spec.whatwg.org/multipage/structured-data.html#serializable">https://html.spec.whatwg.org/multipage/structured-data.html#serializable</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-serializable">2.3. The FileSystemHandle interface</a>
-    <li><a href="#ref-for-serializable①">2.4. The FileSystemFileHandle interface</a>
-    <li><a href="#ref-for-serializable②">2.5. The FileSystemDirectoryHandle interface</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-window">
@@ -3473,20 +2336,6 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
     <li><a href="#ref-for-window-bc②">3.5. The showDirectoryPicker() method</a> <a href="#ref-for-window-bc③">(2)</a>
    </ul>
   </aside>
-  <aside class="dfn-panel" data-for="term-for-current-settings-object">
-   <a href="https://html.spec.whatwg.org/multipage/webappapis.html#current-settings-object">https://html.spec.whatwg.org/multipage/webappapis.html#current-settings-object</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-current-settings-object">4. Accessing the Origin Private File System</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-deserialization-steps">
-   <a href="https://html.spec.whatwg.org/multipage/structured-data.html#deserialization-steps">https://html.spec.whatwg.org/multipage/structured-data.html#deserialization-steps</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-deserialization-steps">2.3. The FileSystemHandle interface</a>
-    <li><a href="#ref-for-deserialization-steps①">2.4. The FileSystemFileHandle interface</a>
-    <li><a href="#ref-for-deserialization-steps②">2.5. The FileSystemDirectoryHandle interface</a>
-   </ul>
-  </aside>
   <aside class="dfn-panel" data-for="term-for-environment-settings-object">
    <a href="https://html.spec.whatwg.org/multipage/webappapis.html#environment-settings-object">https://html.spec.whatwg.org/multipage/webappapis.html#environment-settings-object</a><b>Referenced in:</b>
    <ul>
@@ -3506,26 +2355,18 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
   <aside class="dfn-panel" data-for="term-for-in-parallel">
    <a href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel">https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-in-parallel">2.1. Concepts</a>
-    <li><a href="#ref-for-in-parallel①">2.3.1. The isSameEntry() method</a>
-    <li><a href="#ref-for-in-parallel②">2.3.2. The queryPermission() method</a>
-    <li><a href="#ref-for-in-parallel③">2.3.3. The requestPermission() method</a>
-    <li><a href="#ref-for-in-parallel④">2.4.1. The getFile() method</a>
-    <li><a href="#ref-for-in-parallel⑤">2.4.2. The createWritable() method</a>
-    <li><a href="#ref-for-in-parallel⑥">2.5.2. The getFileHandle() method</a>
-    <li><a href="#ref-for-in-parallel⑦">2.5.3. The getDirectoryHandle() method</a>
-    <li><a href="#ref-for-in-parallel⑧">2.5.4. The removeEntry() method</a>
-    <li><a href="#ref-for-in-parallel⑨">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-in-parallel①⓪">(2)</a>
-    <li><a href="#ref-for-in-parallel①①">3.3. The showOpenFilePicker() method</a> <a href="#ref-for-in-parallel①②">(2)</a>
-    <li><a href="#ref-for-in-parallel①③">3.4. The showSaveFilePicker() method</a> <a href="#ref-for-in-parallel①④">(2)</a>
-    <li><a href="#ref-for-in-parallel①⑤">3.5. The showDirectoryPicker() method</a> <a href="#ref-for-in-parallel①⑥">(2)</a>
-    <li><a href="#ref-for-in-parallel①⑦">3.6. Drag and Drop</a>
+    <li><a href="#ref-for-in-parallel">2.3.1. The queryPermission() method</a>
+    <li><a href="#ref-for-in-parallel①">2.3.2. The requestPermission() method</a>
+    <li><a href="#ref-for-in-parallel②">3.3. The showOpenFilePicker() method</a> <a href="#ref-for-in-parallel③">(2)</a>
+    <li><a href="#ref-for-in-parallel④">3.4. The showSaveFilePicker() method</a> <a href="#ref-for-in-parallel⑤">(2)</a>
+    <li><a href="#ref-for-in-parallel⑥">3.5. The showDirectoryPicker() method</a> <a href="#ref-for-in-parallel⑦">(2)</a>
+    <li><a href="#ref-for-in-parallel⑧">3.6. Drag and Drop</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-event-messageerror">
    <a href="https://html.spec.whatwg.org/multipage/indices.html#event-messageerror">https://html.spec.whatwg.org/multipage/indices.html#event-messageerror</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-event-messageerror">6.3. First-party vs third-party contexts.</a>
+    <li><a href="#ref-for-event-messageerror">5.3. First-party vs third-party contexts.</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-concept-origin-opaque">
@@ -3544,9 +2385,8 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
    <a href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-settings-object-origin">https://html.spec.whatwg.org/multipage/webappapis.html#concept-settings-object-origin</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-concept-settings-object-origin">2.2. Permissions</a>
-    <li><a href="#ref-for-concept-settings-object-origin①">2.3. The FileSystemHandle interface</a> <a href="#ref-for-concept-settings-object-origin②">(2)</a>
-    <li><a href="#ref-for-concept-settings-object-origin③">3.1. Local File System Permissions</a> <a href="#ref-for-concept-settings-object-origin④">(2)</a>
-    <li><a href="#ref-for-concept-settings-object-origin⑤">3.2.2. Starting Directory</a> <a href="#ref-for-concept-settings-object-origin⑥">(2)</a>
+    <li><a href="#ref-for-concept-settings-object-origin①">3.1. Local File System Permissions</a> <a href="#ref-for-concept-settings-object-origin②">(2)</a>
+    <li><a href="#ref-for-concept-settings-object-origin③">3.2.2. Starting Directory</a> <a href="#ref-for-concept-settings-object-origin④">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-concept-dnd-ro">
@@ -3561,45 +2401,20 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
     <li><a href="#ref-for-concept-dnd-rw">3.6. Drag and Drop</a>
    </ul>
   </aside>
-  <aside class="dfn-panel" data-for="term-for-concept-relevant-realm">
-   <a href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-realm">https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-realm</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-concept-relevant-realm">2.3.1. The isSameEntry() method</a>
-    <li><a href="#ref-for-concept-relevant-realm①">2.4.2. The createWritable() method</a>
-   </ul>
-  </aside>
   <aside class="dfn-panel" data-for="term-for-relevant-settings-object">
    <a href="https://html.spec.whatwg.org/multipage/webappapis.html#relevant-settings-object">https://html.spec.whatwg.org/multipage/webappapis.html#relevant-settings-object</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-relevant-settings-object">2.2. Permissions</a>
-    <li><a href="#ref-for-relevant-settings-object①">2.3. The FileSystemHandle interface</a> <a href="#ref-for-relevant-settings-object②">(2)</a>
-    <li><a href="#ref-for-relevant-settings-object③">3.3. The showOpenFilePicker() method</a>
-    <li><a href="#ref-for-relevant-settings-object④">3.4. The showSaveFilePicker() method</a>
-    <li><a href="#ref-for-relevant-settings-object⑤">3.5. The showDirectoryPicker() method</a>
+    <li><a href="#ref-for-relevant-settings-object①">3.3. The showOpenFilePicker() method</a>
+    <li><a href="#ref-for-relevant-settings-object②">3.4. The showSaveFilePicker() method</a>
+    <li><a href="#ref-for-relevant-settings-object③">3.5. The showDirectoryPicker() method</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-same-origin">
    <a href="https://html.spec.whatwg.org/multipage/browsers.html#same-origin">https://html.spec.whatwg.org/multipage/browsers.html#same-origin</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-same-origin">2.2. Permissions</a>
-    <li><a href="#ref-for-same-origin①">2.3. The FileSystemHandle interface</a>
-    <li><a href="#ref-for-same-origin②">3.1. Local File System Permissions</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-serializable-objects">
-   <a href="https://html.spec.whatwg.org/multipage/structured-data.html#serializable-objects">https://html.spec.whatwg.org/multipage/structured-data.html#serializable-objects</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-serializable-objects">2.3. The FileSystemHandle interface</a>
-    <li><a href="#ref-for-serializable-objects①">2.4. The FileSystemFileHandle interface</a>
-    <li><a href="#ref-for-serializable-objects②">2.5. The FileSystemDirectoryHandle interface</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-serialization-steps">
-   <a href="https://html.spec.whatwg.org/multipage/structured-data.html#serialization-steps">https://html.spec.whatwg.org/multipage/structured-data.html#serialization-steps</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-serialization-steps">2.3. The FileSystemHandle interface</a>
-    <li><a href="#ref-for-serialization-steps①">2.4. The FileSystemFileHandle interface</a>
-    <li><a href="#ref-for-serialization-steps②">2.5. The FileSystemDirectoryHandle interface</a>
+    <li><a href="#ref-for-same-origin①">3.1. Local File System Permissions</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-the-drag-data-item-kind">
@@ -3625,16 +2440,7 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
   <aside class="dfn-panel" data-for="term-for-list-append">
    <a href="https://infra.spec.whatwg.org/#list-append">https://infra.spec.whatwg.org/#list-append</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-list-append">2.1. Concepts</a>
-    <li><a href="#ref-for-list-append①">3.2.1. Accepted file types</a> <a href="#ref-for-list-append②">(2)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-set-append">
-   <a href="https://infra.spec.whatwg.org/#set-append">https://infra.spec.whatwg.org/#set-append</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-set-append">2.5.1. Directory iteration</a>
-    <li><a href="#ref-for-set-append①">2.5.2. The getFileHandle() method</a>
-    <li><a href="#ref-for-set-append②">2.5.3. The getDirectoryHandle() method</a>
+    <li><a href="#ref-for-list-append">3.2.1. Accepted file types</a> <a href="#ref-for-list-append①">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-ascii-alphanumeric">
@@ -3644,19 +2450,10 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
     <li><a href="#ref-for-ascii-alphanumeric①">3.2.2. Starting Directory</a>
    </ul>
   </aside>
-  <aside class="dfn-panel" data-for="term-for-assert">
-   <a href="https://infra.spec.whatwg.org/#assert">https://infra.spec.whatwg.org/#assert</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-assert">2.6. The FileSystemWritableFileStream interface</a>
-   </ul>
-  </aside>
   <aside class="dfn-panel" data-for="term-for-byte-sequence">
    <a href="https://infra.spec.whatwg.org/#byte-sequence">https://infra.spec.whatwg.org/#byte-sequence</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-byte-sequence">2.1. Concepts</a>
-    <li><a href="#ref-for-byte-sequence①">2.5.2. The getFileHandle() method</a>
-    <li><a href="#ref-for-byte-sequence②">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-byte-sequence③">(2)</a> <a href="#ref-for-byte-sequence④">(3)</a> <a href="#ref-for-byte-sequence⑤">(4)</a> <a href="#ref-for-byte-sequence⑥">(5)</a> <a href="#ref-for-byte-sequence⑦">(6)</a> <a href="#ref-for-byte-sequence⑧">(7)</a>
-    <li><a href="#ref-for-byte-sequence⑨">3.4. The showSaveFilePicker() method</a>
+    <li><a href="#ref-for-byte-sequence">3.4. The showSaveFilePicker() method</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-code-point">
@@ -3666,18 +2463,6 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
     <li><a href="#ref-for-code-point①">3.2.1. Accepted file types</a>
    </ul>
   </aside>
-  <aside class="dfn-panel" data-for="term-for-list-contain">
-   <a href="https://infra.spec.whatwg.org/#list-contain">https://infra.spec.whatwg.org/#list-contain</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-list-contain">2.1. Concepts</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-javascript-string-convert">
-   <a href="https://infra.spec.whatwg.org/#javascript-string-convert">https://infra.spec.whatwg.org/#javascript-string-convert</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-javascript-string-convert">2.6. The FileSystemWritableFileStream interface</a>
-   </ul>
-  </aside>
   <aside class="dfn-panel" data-for="term-for-list-empty">
    <a href="https://infra.spec.whatwg.org/#list-empty">https://infra.spec.whatwg.org/#list-empty</a><b>Referenced in:</b>
    <ul>
@@ -3688,18 +2473,13 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
    <a href="https://infra.spec.whatwg.org/#map-exists">https://infra.spec.whatwg.org/#map-exists</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-map-exists">3.2.2. Starting Directory</a> <a href="#ref-for-map-exists①">(2)</a> <a href="#ref-for-map-exists②">(3)</a> <a href="#ref-for-map-exists③">(4)</a> <a href="#ref-for-map-exists④">(5)</a>
-    <li><a href="#ref-for-map-exists⑤">4. Accessing the Origin Private File System</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-list-iterate">
    <a href="https://infra.spec.whatwg.org/#list-iterate">https://infra.spec.whatwg.org/#list-iterate</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-list-iterate">2.1. Concepts</a>
-    <li><a href="#ref-for-list-iterate①">2.5.2. The getFileHandle() method</a>
-    <li><a href="#ref-for-list-iterate②">2.5.3. The getDirectoryHandle() method</a>
-    <li><a href="#ref-for-list-iterate③">2.5.4. The removeEntry() method</a>
-    <li><a href="#ref-for-list-iterate④">3.2.1. Accepted file types</a> <a href="#ref-for-list-iterate⑤">(2)</a> <a href="#ref-for-list-iterate⑥">(3)</a>
-    <li><a href="#ref-for-list-iterate⑦">3.3. The showOpenFilePicker() method</a>
+    <li><a href="#ref-for-list-iterate">3.2.1. Accepted file types</a> <a href="#ref-for-list-iterate①">(2)</a> <a href="#ref-for-list-iterate②">(3)</a>
+    <li><a href="#ref-for-list-iterate③">3.3. The showOpenFilePicker() method</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-map-iterate">
@@ -3716,18 +2496,6 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
     <li><a href="#ref-for-implementation-defined②">3.4. The showSaveFilePicker() method</a> <a href="#ref-for-implementation-defined③">(2)</a>
    </ul>
   </aside>
-  <aside class="dfn-panel" data-for="term-for-list-is-empty">
-   <a href="https://infra.spec.whatwg.org/#list-is-empty">https://infra.spec.whatwg.org/#list-is-empty</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-list-is-empty">2.5.4. The removeEntry() method</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-byte-sequence-length">
-   <a href="https://infra.spec.whatwg.org/#byte-sequence-length">https://infra.spec.whatwg.org/#byte-sequence-length</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-byte-sequence-length">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-byte-sequence-length①">(2)</a> <a href="#ref-for-byte-sequence-length②">(3)</a> <a href="#ref-for-byte-sequence-length③">(4)</a> <a href="#ref-for-byte-sequence-length④">(5)</a>
-   </ul>
-  </aside>
   <aside class="dfn-panel" data-for="term-for-string-length">
    <a href="https://infra.spec.whatwg.org/#string-length">https://infra.spec.whatwg.org/#string-length</a><b>Referenced in:</b>
    <ul>
@@ -3748,27 +2516,6 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
     <li><a href="#ref-for-ordered-map">3.2.2. Starting Directory</a> <a href="#ref-for-ordered-map①">(2)</a>
    </ul>
   </aside>
-  <aside class="dfn-panel" data-for="term-for-list-prepend">
-   <a href="https://infra.spec.whatwg.org/#list-prepend">https://infra.spec.whatwg.org/#list-prepend</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-list-prepend">2.1. Concepts</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-list-remove">
-   <a href="https://infra.spec.whatwg.org/#list-remove">https://infra.spec.whatwg.org/#list-remove</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-list-remove">2.5.4. The removeEntry() method</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-ordered-set">
-   <a href="https://infra.spec.whatwg.org/#ordered-set">https://infra.spec.whatwg.org/#ordered-set</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-ordered-set">2.1. Concepts</a>
-    <li><a href="#ref-for-ordered-set①">2.5.1. Directory iteration</a>
-    <li><a href="#ref-for-ordered-set②">2.5.3. The getDirectoryHandle() method</a>
-    <li><a href="#ref-for-ordered-set③">4. Accessing the Origin Private File System</a>
-   </ul>
-  </aside>
   <aside class="dfn-panel" data-for="term-for-string-starts-with">
    <a href="https://infra.spec.whatwg.org/#string-starts-with">https://infra.spec.whatwg.org/#string-starts-with</a><b>Referenced in:</b>
    <ul>
@@ -3778,9 +2525,8 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
   <aside class="dfn-panel" data-for="term-for-string">
    <a href="https://infra.spec.whatwg.org/#string">https://infra.spec.whatwg.org/#string</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-string">2.1. Concepts</a> <a href="#ref-for-string①">(2)</a>
-    <li><a href="#ref-for-string②">3.2.1. Accepted file types</a>
-    <li><a href="#ref-for-string③">3.2.2. Starting Directory</a> <a href="#ref-for-string④">(2)</a> <a href="#ref-for-string⑤">(3)</a>
+    <li><a href="#ref-for-string">3.2.1. Accepted file types</a>
+    <li><a href="#ref-for-string①">3.2.2. Starting Directory</a> <a href="#ref-for-string②">(2)</a> <a href="#ref-for-string③">(3)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-tuple">
@@ -3861,22 +2607,15 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
    <a href="https://w3c.github.io/permissions/#dom-permissionstate-granted">https://w3c.github.io/permissions/#dom-permissionstate-granted</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dom-permissionstate-granted">2.2. Permissions</a> <a href="#ref-for-dom-permissionstate-granted①">(2)</a>
-    <li><a href="#ref-for-dom-permissionstate-granted②">2.4.1. The getFile() method</a>
-    <li><a href="#ref-for-dom-permissionstate-granted③">2.4.2. The createWritable() method</a>
-    <li><a href="#ref-for-dom-permissionstate-granted④">2.5.1. Directory iteration</a> <a href="#ref-for-dom-permissionstate-granted⑤">(2)</a>
-    <li><a href="#ref-for-dom-permissionstate-granted⑥">2.5.2. The getFileHandle() method</a>
-    <li><a href="#ref-for-dom-permissionstate-granted⑦">2.5.3. The getDirectoryHandle() method</a>
-    <li><a href="#ref-for-dom-permissionstate-granted⑧">2.5.4. The removeEntry() method</a>
-    <li><a href="#ref-for-dom-permissionstate-granted⑨">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-dom-permissionstate-granted①⓪">(2)</a>
-    <li><a href="#ref-for-dom-permissionstate-granted①①">3.1. Local File System Permissions</a> <a href="#ref-for-dom-permissionstate-granted①②">(2)</a>
-    <li><a href="#ref-for-dom-permissionstate-granted①③">3.5. The showDirectoryPicker() method</a>
+    <li><a href="#ref-for-dom-permissionstate-granted②">3.1. Local File System Permissions</a> <a href="#ref-for-dom-permissionstate-granted③">(2)</a>
+    <li><a href="#ref-for-dom-permissionstate-granted④">3.5. The showDirectoryPicker() method</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-dom-permissiondescriptor-name">
    <a href="https://w3c.github.io/permissions/#dom-permissiondescriptor-name">https://w3c.github.io/permissions/#dom-permissiondescriptor-name</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dom-permissiondescriptor-name">2.2. Permissions</a> <a href="#ref-for-dom-permissiondescriptor-name①">(2)</a>
-    <li><a href="#ref-for-dom-permissiondescriptor-name②">2.3.2. The queryPermission() method</a> <a href="#ref-for-dom-permissiondescriptor-name③">(2)</a>
+    <li><a href="#ref-for-dom-permissiondescriptor-name②">2.3.1. The queryPermission() method</a> <a href="#ref-for-dom-permissiondescriptor-name③">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-dfn-permission-descriptor-type">
@@ -3889,8 +2628,7 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
    <a href="https://w3c.github.io/permissions/#dfn-permission-state">https://w3c.github.io/permissions/#dfn-permission-state</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dfn-permission-state">2.2. Permissions</a> <a href="#ref-for-dfn-permission-state①">(2)</a> <a href="#ref-for-dfn-permission-state②">(3)</a> <a href="#ref-for-dfn-permission-state③">(4)</a> <a href="#ref-for-dfn-permission-state④">(5)</a> <a href="#ref-for-dfn-permission-state⑤">(6)</a> <a href="#ref-for-dfn-permission-state⑥">(7)</a>
-    <li><a href="#ref-for-dfn-permission-state⑦">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-dfn-permission-state⑧">(2)</a>
-    <li><a href="#ref-for-dfn-permission-state⑨">3.1. Local File System Permissions</a> <a href="#ref-for-dfn-permission-state①⓪">(2)</a>
+    <li><a href="#ref-for-dfn-permission-state⑦">3.1. Local File System Permissions</a> <a href="#ref-for-dfn-permission-state⑧">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-dfn-permission-state-constraints">
@@ -3902,7 +2640,7 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
   <aside class="dfn-panel" data-for="term-for-dom-navigator-permissions">
    <a href="https://w3c.github.io/permissions/#dom-navigator-permissions">https://w3c.github.io/permissions/#dom-navigator-permissions</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-dom-navigator-permissions">2.3.2. The queryPermission() method</a> <a href="#ref-for-dom-navigator-permissions①">(2)</a>
+    <li><a href="#ref-for-dom-navigator-permissions">2.3.1. The queryPermission() method</a> <a href="#ref-for-dom-navigator-permissions①">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-dfn-powerful-feature">
@@ -3920,7 +2658,7 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
   <aside class="dfn-panel" data-for="term-for-dom-permissions-query">
    <a href="https://w3c.github.io/permissions/#dom-permissions-query">https://w3c.github.io/permissions/#dom-permissions-query</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-dom-permissions-query">2.3.2. The queryPermission() method</a> <a href="#ref-for-dom-permissions-query①">(2)</a> <a href="#ref-for-dom-permissions-query②">(3)</a>
+    <li><a href="#ref-for-dom-permissions-query">2.3.1. The queryPermission() method</a> <a href="#ref-for-dom-permissions-query①">(2)</a> <a href="#ref-for-dom-permissions-query②">(3)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-dfn-request-permission-to-use">
@@ -3934,7 +2672,7 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
    <a href="https://w3c.github.io/permissions/#dom-permissionstatus-state">https://w3c.github.io/permissions/#dom-permissionstatus-state</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dom-permissionstatus-state">2.2. Permissions</a>
-    <li><a href="#ref-for-dom-permissionstatus-state①">2.3.2. The queryPermission() method</a> <a href="#ref-for-dom-permissionstatus-state②">(2)</a>
+    <li><a href="#ref-for-dom-permissionstatus-state①">2.3.1. The queryPermission() method</a> <a href="#ref-for-dom-permissionstatus-state②">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-permission-request-algorithm">
@@ -3943,228 +2681,51 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
     <li><a href="#ref-for-permission-request-algorithm">2.2. Permissions</a> <a href="#ref-for-permission-request-algorithm①">(2)</a>
    </ul>
   </aside>
-  <aside class="dfn-panel" data-for="term-for-storagemanager">
-   <a href="https://storage.spec.whatwg.org/#storagemanager">https://storage.spec.whatwg.org/#storagemanager</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-storagemanager">4. Accessing the Origin Private File System</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-storage-endpoint-identifier">
-   <a href="https://storage.spec.whatwg.org/#storage-endpoint-identifier">https://storage.spec.whatwg.org/#storage-endpoint-identifier</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-storage-endpoint-identifier">4. Accessing the Origin Private File System</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-obtain-a-local-storage-bottle-map">
-   <a href="https://storage.spec.whatwg.org/#obtain-a-local-storage-bottle-map">https://storage.spec.whatwg.org/#obtain-a-local-storage-bottle-map</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-obtain-a-local-storage-bottle-map">4. Accessing the Origin Private File System</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-storage-endpoint-quota">
-   <a href="https://storage.spec.whatwg.org/#storage-endpoint-quota">https://storage.spec.whatwg.org/#storage-endpoint-quota</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-storage-endpoint-quota">4. Accessing the Origin Private File System</a>
-   </ul>
-  </aside>
   <aside class="dfn-panel" data-for="term-for-site-storage">
    <a href="https://storage.spec.whatwg.org/#site-storage">https://storage.spec.whatwg.org/#site-storage</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-site-storage">6.1. Users giving access to more, or more sensitive files than they intended.</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-storage-endpoint">
-   <a href="https://storage.spec.whatwg.org/#storage-endpoint">https://storage.spec.whatwg.org/#storage-endpoint</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-storage-endpoint">4. Accessing the Origin Private File System</a>
+    <li><a href="#ref-for-site-storage">5.1. Users giving access to more, or more sensitive files than they intended.</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-storage-quota">
-   <a href="https://storage.spec.whatwg.org/#storage-quota">https://storage.spec.whatwg.org/#storage-quota</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-storage-quota">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-storage-quota①">(2)</a> <a href="#ref-for-storage-quota②">(3)</a> <a href="#ref-for-storage-quota③">(4)</a>
-    <li><a href="#ref-for-storage-quota④">7.3. Filling up a users disk</a> <a href="#ref-for-storage-quota⑤">(2)</a> <a href="#ref-for-storage-quota⑥">(3)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-storage-endpoint-types">
-   <a href="https://storage.spec.whatwg.org/#storage-endpoint-types">https://storage.spec.whatwg.org/#storage-endpoint-types</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-storage-endpoint-types">4. Accessing the Origin Private File System</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-readablestream">
-   <a href="https://streams.spec.whatwg.org/#readablestream">https://streams.spec.whatwg.org/#readablestream</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-readablestream">2.6. The FileSystemWritableFileStream interface</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-writablestream">
-   <a href="https://streams.spec.whatwg.org/#writablestream">https://streams.spec.whatwg.org/#writablestream</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-writablestream">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-writablestream①">(2)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-writablestreamdefaultwriter">
-   <a href="https://streams.spec.whatwg.org/#writablestreamdefaultwriter">https://streams.spec.whatwg.org/#writablestreamdefaultwriter</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-writablestreamdefaultwriter">2.6. The FileSystemWritableFileStream interface</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-writablestream-set-up-closealgorithm">
-   <a href="https://streams.spec.whatwg.org/#writablestream-set-up-closealgorithm">https://streams.spec.whatwg.org/#writablestream-set-up-closealgorithm</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-writablestream-set-up-closealgorithm">2.6. The FileSystemWritableFileStream interface</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-ws-get-writer">
-   <a href="https://streams.spec.whatwg.org/#ws-get-writer">https://streams.spec.whatwg.org/#ws-get-writer</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-ws-get-writer">2.6. The FileSystemWritableFileStream interface</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-writablestream-get-a-writer">
-   <a href="https://streams.spec.whatwg.org/#writablestream-get-a-writer">https://streams.spec.whatwg.org/#writablestream-get-a-writer</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-writablestream-get-a-writer">2.6.1. The write() method</a>
-    <li><a href="#ref-for-writablestream-get-a-writer①">2.6.2. The seek() method</a>
-    <li><a href="#ref-for-writablestream-get-a-writer②">2.6.3. The truncate() method</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-writablestream-set-up-highwatermark">
-   <a href="https://streams.spec.whatwg.org/#writablestream-set-up-highwatermark">https://streams.spec.whatwg.org/#writablestream-set-up-highwatermark</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-writablestream-set-up-highwatermark">2.6. The FileSystemWritableFileStream interface</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-writablestreamdefaultwriter-release">
-   <a href="https://streams.spec.whatwg.org/#writablestreamdefaultwriter-release">https://streams.spec.whatwg.org/#writablestreamdefaultwriter-release</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-writablestreamdefaultwriter-release">2.6.1. The write() method</a>
-    <li><a href="#ref-for-writablestreamdefaultwriter-release①">2.6.2. The seek() method</a>
-    <li><a href="#ref-for-writablestreamdefaultwriter-release②">2.6.3. The truncate() method</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-writablestream-set-up">
-   <a href="https://streams.spec.whatwg.org/#writablestream-set-up">https://streams.spec.whatwg.org/#writablestream-set-up</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-writablestream-set-up">2.6. The FileSystemWritableFileStream interface</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-writablestream-set-up-sizealgorithm">
-   <a href="https://streams.spec.whatwg.org/#writablestream-set-up-sizealgorithm">https://streams.spec.whatwg.org/#writablestream-set-up-sizealgorithm</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-writablestream-set-up-sizealgorithm">2.6. The FileSystemWritableFileStream interface</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-default-writer-write">
-   <a href="https://streams.spec.whatwg.org/#default-writer-write">https://streams.spec.whatwg.org/#default-writer-write</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-default-writer-write">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-default-writer-write①">(2)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-writablestream-set-up-writealgorithm">
-   <a href="https://streams.spec.whatwg.org/#writablestream-set-up-writealgorithm">https://streams.spec.whatwg.org/#writablestream-set-up-writealgorithm</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-writablestream-set-up-writealgorithm">2.6. The FileSystemWritableFileStream interface</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-writablestreamdefaultwriter-write-a-chunk">
-   <a href="https://streams.spec.whatwg.org/#writablestreamdefaultwriter-write-a-chunk">https://streams.spec.whatwg.org/#writablestreamdefaultwriter-write-a-chunk</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-writablestreamdefaultwriter-write-a-chunk">2.6.1. The write() method</a>
-    <li><a href="#ref-for-writablestreamdefaultwriter-write-a-chunk①">2.6.2. The seek() method</a>
-    <li><a href="#ref-for-writablestreamdefaultwriter-write-a-chunk②">2.6.3. The truncate() method</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-aborterror">
-   <a href="https://webidl.spec.whatwg.org/#aborterror">https://webidl.spec.whatwg.org/#aborterror</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-aborterror">2.6. The FileSystemWritableFileStream interface</a>
-    <li><a href="#ref-for-aborterror①">3.3. The showOpenFilePicker() method</a> <a href="#ref-for-aborterror②">(2)</a>
-    <li><a href="#ref-for-aborterror③">3.4. The showSaveFilePicker() method</a> <a href="#ref-for-aborterror④">(2)</a>
-    <li><a href="#ref-for-aborterror⑤">3.5. The showDirectoryPicker() method</a> <a href="#ref-for-aborterror⑥">(2)</a> <a href="#ref-for-aborterror⑦">(3)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-BufferSource">
-   <a href="https://webidl.spec.whatwg.org/#BufferSource">https://webidl.spec.whatwg.org/#BufferSource</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-BufferSource">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-BufferSource①">(2)</a> <a href="#ref-for-BufferSource②">(3)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-idl-DOMString">
-   <a href="https://webidl.spec.whatwg.org/#idl-DOMString">https://webidl.spec.whatwg.org/#idl-DOMString</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-idl-DOMString">3. Accessing Local File System</a> <a href="#ref-for-idl-DOMString①">(2)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-datacloneerror">
-   <a href="https://webidl.spec.whatwg.org/#datacloneerror">https://webidl.spec.whatwg.org/#datacloneerror</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-datacloneerror">2.3. The FileSystemHandle interface</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-Exposed">
-   <a href="https://webidl.spec.whatwg.org/#Exposed">https://webidl.spec.whatwg.org/#Exposed</a><b>Referenced in:</b>
+   <a href="https://storage.spec.whatwg.org/#storage-quota">https://storage.spec.whatwg.org/#storage-quota</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-Exposed">2.3. The FileSystemHandle interface</a>
-    <li><a href="#ref-for-Exposed①">2.4. The FileSystemFileHandle interface</a>
-    <li><a href="#ref-for-Exposed②">2.5. The FileSystemDirectoryHandle interface</a>
-    <li><a href="#ref-for-Exposed③">2.6. The FileSystemWritableFileStream interface</a>
+    <li><a href="#ref-for-storage-quota">6.3. Filling up a users disk</a> <a href="#ref-for-storage-quota①">(2)</a> <a href="#ref-for-storage-quota②">(3)</a>
    </ul>
   </aside>
-  <aside class="dfn-panel" data-for="term-for-invalidmodificationerror">
-   <a href="https://webidl.spec.whatwg.org/#invalidmodificationerror">https://webidl.spec.whatwg.org/#invalidmodificationerror</a><b>Referenced in:</b>
+  <aside class="dfn-panel" data-for="term-for-aborterror">
+   <a href="https://webidl.spec.whatwg.org/#aborterror">https://webidl.spec.whatwg.org/#aborterror</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-invalidmodificationerror">2.5.4. The removeEntry() method</a>
+    <li><a href="#ref-for-aborterror">3.3. The showOpenFilePicker() method</a> <a href="#ref-for-aborterror①">(2)</a>
+    <li><a href="#ref-for-aborterror②">3.4. The showSaveFilePicker() method</a> <a href="#ref-for-aborterror③">(2)</a>
+    <li><a href="#ref-for-aborterror④">3.5. The showDirectoryPicker() method</a> <a href="#ref-for-aborterror⑤">(2)</a> <a href="#ref-for-aborterror⑥">(3)</a>
    </ul>
   </aside>
-  <aside class="dfn-panel" data-for="term-for-notallowederror">
-   <a href="https://webidl.spec.whatwg.org/#notallowederror">https://webidl.spec.whatwg.org/#notallowederror</a><b>Referenced in:</b>
+  <aside class="dfn-panel" data-for="term-for-idl-DOMString">
+   <a href="https://webidl.spec.whatwg.org/#idl-DOMString">https://webidl.spec.whatwg.org/#idl-DOMString</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-notallowederror">2.4.1. The getFile() method</a>
-    <li><a href="#ref-for-notallowederror①">2.4.2. The createWritable() method</a>
-    <li><a href="#ref-for-notallowederror②">2.5.1. Directory iteration</a> <a href="#ref-for-notallowederror③">(2)</a>
-    <li><a href="#ref-for-notallowederror④">2.5.2. The getFileHandle() method</a>
-    <li><a href="#ref-for-notallowederror⑤">2.5.3. The getDirectoryHandle() method</a>
-    <li><a href="#ref-for-notallowederror⑥">2.5.4. The removeEntry() method</a>
-    <li><a href="#ref-for-notallowederror⑦">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-notallowederror⑧">(2)</a>
+    <li><a href="#ref-for-idl-DOMString">3. Accessing Local File System</a> <a href="#ref-for-idl-DOMString①">(2)</a>
    </ul>
   </aside>
-  <aside class="dfn-panel" data-for="term-for-notfounderror">
-   <a href="https://webidl.spec.whatwg.org/#notfounderror">https://webidl.spec.whatwg.org/#notfounderror</a><b>Referenced in:</b>
+  <aside class="dfn-panel" data-for="term-for-Exposed">
+   <a href="https://webidl.spec.whatwg.org/#Exposed">https://webidl.spec.whatwg.org/#Exposed</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-notfounderror">2.5.2. The getFileHandle() method</a>
-    <li><a href="#ref-for-notfounderror①">2.5.3. The getDirectoryHandle() method</a>
-    <li><a href="#ref-for-notfounderror②">2.5.4. The removeEntry() method</a>
+    <li><a href="#ref-for-Exposed">2.3. The FileSystemHandle interface</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-idl-promise">
    <a href="https://webidl.spec.whatwg.org/#idl-promise">https://webidl.spec.whatwg.org/#idl-promise</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-idl-promise">2.3. The FileSystemHandle interface</a> <a href="#ref-for-idl-promise①">(2)</a> <a href="#ref-for-idl-promise②">(3)</a>
-    <li><a href="#ref-for-idl-promise③">2.4. The FileSystemFileHandle interface</a> <a href="#ref-for-idl-promise④">(2)</a>
-    <li><a href="#ref-for-idl-promise⑤">2.5. The FileSystemDirectoryHandle interface</a> <a href="#ref-for-idl-promise⑥">(2)</a> <a href="#ref-for-idl-promise⑦">(3)</a> <a href="#ref-for-idl-promise⑧">(4)</a>
-    <li><a href="#ref-for-idl-promise⑨">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-idl-promise①⓪">(2)</a> <a href="#ref-for-idl-promise①①">(3)</a>
-    <li><a href="#ref-for-idl-promise①②">3. Accessing Local File System</a> <a href="#ref-for-idl-promise①③">(2)</a> <a href="#ref-for-idl-promise①④">(3)</a>
-    <li><a href="#ref-for-idl-promise①⑤">3.6. Drag and Drop</a>
-    <li><a href="#ref-for-idl-promise①⑥">4. Accessing the Origin Private File System</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-quotaexceedederror">
-   <a href="https://webidl.spec.whatwg.org/#quotaexceedederror">https://webidl.spec.whatwg.org/#quotaexceedederror</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-quotaexceedederror">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-quotaexceedederror①">(2)</a>
+    <li><a href="#ref-for-idl-promise">2.3. The FileSystemHandle interface</a> <a href="#ref-for-idl-promise①">(2)</a>
+    <li><a href="#ref-for-idl-promise②">3. Accessing Local File System</a> <a href="#ref-for-idl-promise③">(2)</a> <a href="#ref-for-idl-promise④">(3)</a>
+    <li><a href="#ref-for-idl-promise⑤">3.6. Drag and Drop</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-SecureContext">
    <a href="https://webidl.spec.whatwg.org/#SecureContext">https://webidl.spec.whatwg.org/#SecureContext</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-SecureContext">2.3. The FileSystemHandle interface</a>
-    <li><a href="#ref-for-SecureContext①">2.4. The FileSystemFileHandle interface</a>
-    <li><a href="#ref-for-SecureContext②">2.5. The FileSystemDirectoryHandle interface</a>
-    <li><a href="#ref-for-SecureContext③">2.6. The FileSystemWritableFileStream interface</a>
-    <li><a href="#ref-for-SecureContext④">3. Accessing Local File System</a>
-    <li><a href="#ref-for-SecureContext⑤">4. Accessing the Origin Private File System</a>
+    <li><a href="#ref-for-SecureContext①">3. Accessing Local File System</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-securityerror">
@@ -4172,102 +2733,48 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
    <ul>
     <li><a href="#ref-for-securityerror">2.2. Permissions</a> <a href="#ref-for-securityerror①">(2)</a> <a href="#ref-for-securityerror②">(3)</a>
     <li><a href="#ref-for-securityerror③">3.1. Local File System Permissions</a> <a href="#ref-for-securityerror④">(2)</a> <a href="#ref-for-securityerror⑤">(3)</a>
-    <li><a href="#ref-for-securityerror⑥">4. Accessing the Origin Private File System</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-exceptiondef-typeerror">
    <a href="https://webidl.spec.whatwg.org/#exceptiondef-typeerror">https://webidl.spec.whatwg.org/#exceptiondef-typeerror</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-exceptiondef-typeerror">2.5.2. The getFileHandle() method</a>
-    <li><a href="#ref-for-exceptiondef-typeerror①">2.5.3. The getDirectoryHandle() method</a>
-    <li><a href="#ref-for-exceptiondef-typeerror②">2.5.4. The removeEntry() method</a>
-    <li><a href="#ref-for-exceptiondef-typeerror③">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-exceptiondef-typeerror④">(2)</a> <a href="#ref-for-exceptiondef-typeerror⑤">(3)</a>
-    <li><a href="#ref-for-exceptiondef-typeerror⑥">3.2.1. Accepted file types</a> <a href="#ref-for-exceptiondef-typeerror⑦">(2)</a> <a href="#ref-for-exceptiondef-typeerror⑧">(3)</a> <a href="#ref-for-exceptiondef-typeerror⑨">(4)</a> <a href="#ref-for-exceptiondef-typeerror①⓪">(5)</a> <a href="#ref-for-exceptiondef-typeerror①①">(6)</a> <a href="#ref-for-exceptiondef-typeerror①②">(7)</a>
-    <li><a href="#ref-for-exceptiondef-typeerror①③">3.2.2. Starting Directory</a> <a href="#ref-for-exceptiondef-typeerror①④">(2)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-typemismatcherror">
-   <a href="https://webidl.spec.whatwg.org/#typemismatcherror">https://webidl.spec.whatwg.org/#typemismatcherror</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-typemismatcherror">2.5.2. The getFileHandle() method</a>
-    <li><a href="#ref-for-typemismatcherror①">2.5.3. The getDirectoryHandle() method</a>
+    <li><a href="#ref-for-exceptiondef-typeerror">3.2.1. Accepted file types</a> <a href="#ref-for-exceptiondef-typeerror①">(2)</a> <a href="#ref-for-exceptiondef-typeerror②">(3)</a> <a href="#ref-for-exceptiondef-typeerror③">(4)</a> <a href="#ref-for-exceptiondef-typeerror④">(5)</a> <a href="#ref-for-exceptiondef-typeerror⑤">(6)</a> <a href="#ref-for-exceptiondef-typeerror⑥">(7)</a>
+    <li><a href="#ref-for-exceptiondef-typeerror⑦">3.2.2. Starting Directory</a> <a href="#ref-for-exceptiondef-typeerror⑧">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-idl-USVString">
    <a href="https://webidl.spec.whatwg.org/#idl-USVString">https://webidl.spec.whatwg.org/#idl-USVString</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-idl-USVString">2.3. The FileSystemHandle interface</a>
-    <li><a href="#ref-for-idl-USVString①">2.5. The FileSystemDirectoryHandle interface</a> <a href="#ref-for-idl-USVString②">(2)</a> <a href="#ref-for-idl-USVString③">(3)</a> <a href="#ref-for-idl-USVString④">(4)</a> <a href="#ref-for-idl-USVString⑤">(5)</a>
-    <li><a href="#ref-for-idl-USVString⑥">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-idl-USVString⑦">(2)</a> <a href="#ref-for-idl-USVString⑧">(3)</a>
-    <li><a href="#ref-for-idl-USVString⑨">3. Accessing Local File System</a> <a href="#ref-for-idl-USVString①⓪">(2)</a> <a href="#ref-for-idl-USVString①①">(3)</a> <a href="#ref-for-idl-USVString①②">(4)</a> <a href="#ref-for-idl-USVString①③">(5)</a>
+    <li><a href="#ref-for-idl-USVString">3. Accessing Local File System</a> <a href="#ref-for-idl-USVString①">(2)</a> <a href="#ref-for-idl-USVString②">(3)</a> <a href="#ref-for-idl-USVString③">(4)</a> <a href="#ref-for-idl-USVString④">(5)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-a-new-promise">
    <a href="https://webidl.spec.whatwg.org/#a-new-promise">https://webidl.spec.whatwg.org/#a-new-promise</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-a-new-promise">2.1. Concepts</a>
-    <li><a href="#ref-for-a-new-promise①">2.3.1. The isSameEntry() method</a>
-    <li><a href="#ref-for-a-new-promise②">2.3.2. The queryPermission() method</a>
-    <li><a href="#ref-for-a-new-promise③">2.3.3. The requestPermission() method</a>
-    <li><a href="#ref-for-a-new-promise④">2.4.1. The getFile() method</a>
-    <li><a href="#ref-for-a-new-promise⑤">2.4.2. The createWritable() method</a>
-    <li><a href="#ref-for-a-new-promise⑥">2.5.1. Directory iteration</a>
-    <li><a href="#ref-for-a-new-promise⑦">2.5.2. The getFileHandle() method</a>
-    <li><a href="#ref-for-a-new-promise⑧">2.5.3. The getDirectoryHandle() method</a>
-    <li><a href="#ref-for-a-new-promise⑨">2.5.4. The removeEntry() method</a>
-    <li><a href="#ref-for-a-new-promise①⓪">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-a-new-promise①①">(2)</a>
-    <li><a href="#ref-for-a-new-promise①②">3.3. The showOpenFilePicker() method</a>
-    <li><a href="#ref-for-a-new-promise①③">3.4. The showSaveFilePicker() method</a>
-    <li><a href="#ref-for-a-new-promise①④">3.5. The showDirectoryPicker() method</a>
-    <li><a href="#ref-for-a-new-promise①⑤">3.6. Drag and Drop</a>
+    <li><a href="#ref-for-a-new-promise">2.3.1. The queryPermission() method</a>
+    <li><a href="#ref-for-a-new-promise①">2.3.2. The requestPermission() method</a>
+    <li><a href="#ref-for-a-new-promise②">3.3. The showOpenFilePicker() method</a>
+    <li><a href="#ref-for-a-new-promise③">3.4. The showSaveFilePicker() method</a>
+    <li><a href="#ref-for-a-new-promise④">3.5. The showDirectoryPicker() method</a>
+    <li><a href="#ref-for-a-new-promise⑤">3.6. Drag and Drop</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-a-promise-rejected-with">
    <a href="https://webidl.spec.whatwg.org/#a-promise-rejected-with">https://webidl.spec.whatwg.org/#a-promise-rejected-with</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-a-promise-rejected-with">2.6. The FileSystemWritableFileStream interface</a>
-    <li><a href="#ref-for-a-promise-rejected-with①">3.1. Local File System Permissions</a> <a href="#ref-for-a-promise-rejected-with②">(2)</a>
-    <li><a href="#ref-for-a-promise-rejected-with③">4. Accessing the Origin Private File System</a>
+    <li><a href="#ref-for-a-promise-rejected-with">3.1. Local File System Permissions</a> <a href="#ref-for-a-promise-rejected-with①">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-a-promise-resolved-with">
    <a href="https://webidl.spec.whatwg.org/#a-promise-resolved-with">https://webidl.spec.whatwg.org/#a-promise-resolved-with</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-a-promise-resolved-with">3.6. Drag and Drop</a> <a href="#ref-for-a-promise-resolved-with①">(2)</a>
-    <li><a href="#ref-for-a-promise-resolved-with②">4. Accessing the Origin Private File System</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-asynchronous-iterator-initialization-steps">
-   <a href="https://webidl.spec.whatwg.org/#asynchronous-iterator-initialization-steps">https://webidl.spec.whatwg.org/#asynchronous-iterator-initialization-steps</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-asynchronous-iterator-initialization-steps">2.5.1. Directory iteration</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-idl-boolean">
    <a href="https://webidl.spec.whatwg.org/#idl-boolean">https://webidl.spec.whatwg.org/#idl-boolean</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-idl-boolean">2.3. The FileSystemHandle interface</a>
-    <li><a href="#ref-for-idl-boolean①">2.4. The FileSystemFileHandle interface</a>
-    <li><a href="#ref-for-idl-boolean②">2.5. The FileSystemDirectoryHandle interface</a> <a href="#ref-for-idl-boolean③">(2)</a> <a href="#ref-for-idl-boolean④">(3)</a>
-    <li><a href="#ref-for-idl-boolean⑤">3. Accessing Local File System</a> <a href="#ref-for-idl-boolean⑥">(2)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-dfn-get-buffer-source-copy">
-   <a href="https://webidl.spec.whatwg.org/#dfn-get-buffer-source-copy">https://webidl.spec.whatwg.org/#dfn-get-buffer-source-copy</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dfn-get-buffer-source-copy">2.6. The FileSystemWritableFileStream interface</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-dfn-get-the-next-iteration-result">
-   <a href="https://webidl.spec.whatwg.org/#dfn-get-the-next-iteration-result">https://webidl.spec.whatwg.org/#dfn-get-the-next-iteration-result</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dfn-get-the-next-iteration-result">2.5.1. Directory iteration</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-new">
-   <a href="https://webidl.spec.whatwg.org/#new">https://webidl.spec.whatwg.org/#new</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-new">2.6. The FileSystemWritableFileStream interface</a>
+    <li><a href="#ref-for-idl-boolean">3. Accessing Local File System</a> <a href="#ref-for-idl-boolean①">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-idl-record">
@@ -4279,112 +2786,55 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
   <aside class="dfn-panel" data-for="term-for-reject">
    <a href="https://webidl.spec.whatwg.org/#reject">https://webidl.spec.whatwg.org/#reject</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-reject">2.3.3. The requestPermission() method</a>
-    <li><a href="#ref-for-reject①">2.4.2. The createWritable() method</a>
-    <li><a href="#ref-for-reject②">2.5.2. The getFileHandle() method</a> <a href="#ref-for-reject③">(2)</a> <a href="#ref-for-reject④">(3)</a> <a href="#ref-for-reject⑤">(4)</a> <a href="#ref-for-reject⑥">(5)</a>
-    <li><a href="#ref-for-reject⑦">2.5.3. The getDirectoryHandle() method</a> <a href="#ref-for-reject⑧">(2)</a> <a href="#ref-for-reject⑨">(3)</a> <a href="#ref-for-reject①⓪">(4)</a> <a href="#ref-for-reject①①">(5)</a>
-    <li><a href="#ref-for-reject①②">2.5.4. The removeEntry() method</a> <a href="#ref-for-reject①③">(2)</a> <a href="#ref-for-reject①④">(3)</a> <a href="#ref-for-reject①⑤">(4)</a> <a href="#ref-for-reject①⑥">(5)</a>
-    <li><a href="#ref-for-reject①⑦">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-reject①⑧">(2)</a> <a href="#ref-for-reject①⑨">(3)</a> <a href="#ref-for-reject②⓪">(4)</a> <a href="#ref-for-reject②①">(5)</a> <a href="#ref-for-reject②②">(6)</a> <a href="#ref-for-reject②③">(7)</a>
-    <li><a href="#ref-for-reject②④">3.3. The showOpenFilePicker() method</a> <a href="#ref-for-reject②⑤">(2)</a>
-    <li><a href="#ref-for-reject②⑥">3.4. The showSaveFilePicker() method</a> <a href="#ref-for-reject②⑦">(2)</a>
-    <li><a href="#ref-for-reject②⑧">3.5. The showDirectoryPicker() method</a> <a href="#ref-for-reject②⑨">(2)</a>
+    <li><a href="#ref-for-reject">2.3.2. The requestPermission() method</a>
+    <li><a href="#ref-for-reject①">3.3. The showOpenFilePicker() method</a> <a href="#ref-for-reject②">(2)</a>
+    <li><a href="#ref-for-reject③">3.4. The showSaveFilePicker() method</a> <a href="#ref-for-reject④">(2)</a>
+    <li><a href="#ref-for-reject⑤">3.5. The showDirectoryPicker() method</a> <a href="#ref-for-reject⑥">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-resolve">
    <a href="https://webidl.spec.whatwg.org/#resolve">https://webidl.spec.whatwg.org/#resolve</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-resolve">2.1. Concepts</a> <a href="#ref-for-resolve①">(2)</a> <a href="#ref-for-resolve②">(3)</a>
-    <li><a href="#ref-for-resolve③">2.3.1. The isSameEntry() method</a> <a href="#ref-for-resolve④">(2)</a>
-    <li><a href="#ref-for-resolve⑤">2.3.2. The queryPermission() method</a>
-    <li><a href="#ref-for-resolve⑥">2.3.3. The requestPermission() method</a>
-    <li><a href="#ref-for-resolve⑦">2.4.1. The getFile() method</a>
-    <li><a href="#ref-for-resolve⑧">2.4.2. The createWritable() method</a>
-    <li><a href="#ref-for-resolve⑨">2.5.1. Directory iteration</a> <a href="#ref-for-resolve①⓪">(2)</a>
-    <li><a href="#ref-for-resolve①①">2.5.2. The getFileHandle() method</a> <a href="#ref-for-resolve①②">(2)</a>
-    <li><a href="#ref-for-resolve①③">2.5.3. The getDirectoryHandle() method</a> <a href="#ref-for-resolve①④">(2)</a>
-    <li><a href="#ref-for-resolve①⑤">2.5.4. The removeEntry() method</a>
-    <li><a href="#ref-for-resolve①⑥">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-resolve①⑦">(2)</a> <a href="#ref-for-resolve①⑧">(3)</a> <a href="#ref-for-resolve①⑨">(4)</a>
-    <li><a href="#ref-for-resolve②⓪">3.3. The showOpenFilePicker() method</a>
-    <li><a href="#ref-for-resolve②①">3.4. The showSaveFilePicker() method</a>
-    <li><a href="#ref-for-resolve②②">3.5. The showDirectoryPicker() method</a>
-    <li><a href="#ref-for-resolve②③">3.6. Drag and Drop</a>
+    <li><a href="#ref-for-resolve">2.3.1. The queryPermission() method</a>
+    <li><a href="#ref-for-resolve①">2.3.2. The requestPermission() method</a>
+    <li><a href="#ref-for-resolve②">3.3. The showOpenFilePicker() method</a>
+    <li><a href="#ref-for-resolve③">3.4. The showSaveFilePicker() method</a>
+    <li><a href="#ref-for-resolve④">3.5. The showDirectoryPicker() method</a>
+    <li><a href="#ref-for-resolve⑤">3.6. Drag and Drop</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-idl-sequence">
    <a href="https://webidl.spec.whatwg.org/#idl-sequence">https://webidl.spec.whatwg.org/#idl-sequence</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-idl-sequence">2.5. The FileSystemDirectoryHandle interface</a>
-    <li><a href="#ref-for-idl-sequence①">3. Accessing Local File System</a> <a href="#ref-for-idl-sequence②">(2)</a> <a href="#ref-for-idl-sequence③">(3)</a>
+    <li><a href="#ref-for-idl-sequence">3. Accessing Local File System</a> <a href="#ref-for-idl-sequence①">(2)</a> <a href="#ref-for-idl-sequence②">(3)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-this">
    <a href="https://webidl.spec.whatwg.org/#this">https://webidl.spec.whatwg.org/#this</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-this">2.3.1. The isSameEntry() method</a> <a href="#ref-for-this①">(2)</a>
-    <li><a href="#ref-for-this②">2.3.2. The queryPermission() method</a>
-    <li><a href="#ref-for-this③">2.3.3. The requestPermission() method</a>
-    <li><a href="#ref-for-this④">2.4.1. The getFile() method</a> <a href="#ref-for-this⑤">(2)</a>
-    <li><a href="#ref-for-this⑥">2.4.2. The createWritable() method</a> <a href="#ref-for-this⑦">(2)</a> <a href="#ref-for-this⑧">(3)</a>
-    <li><a href="#ref-for-this⑨">2.5.2. The getFileHandle() method</a> <a href="#ref-for-this①⓪">(2)</a> <a href="#ref-for-this①①">(3)</a>
-    <li><a href="#ref-for-this①②">2.5.3. The getDirectoryHandle() method</a> <a href="#ref-for-this①③">(2)</a> <a href="#ref-for-this①④">(3)</a>
-    <li><a href="#ref-for-this①⑤">2.5.4. The removeEntry() method</a> <a href="#ref-for-this①⑥">(2)</a>
-    <li><a href="#ref-for-this①⑦">2.5.5. The resolve() method</a>
-    <li><a href="#ref-for-this①⑧">2.6.1. The write() method</a>
-    <li><a href="#ref-for-this①⑨">2.6.2. The seek() method</a>
-    <li><a href="#ref-for-this②⓪">2.6.3. The truncate() method</a>
-    <li><a href="#ref-for-this②①">3.3. The showOpenFilePicker() method</a>
-    <li><a href="#ref-for-this②②">3.4. The showSaveFilePicker() method</a>
-    <li><a href="#ref-for-this②③">3.5. The showDirectoryPicker() method</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-idl-undefined">
-   <a href="https://webidl.spec.whatwg.org/#idl-undefined">https://webidl.spec.whatwg.org/#idl-undefined</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-idl-undefined">2.5. The FileSystemDirectoryHandle interface</a>
-    <li><a href="#ref-for-idl-undefined①">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-idl-undefined②">(2)</a> <a href="#ref-for-idl-undefined③">(3)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-idl-unsigned-long-long">
-   <a href="https://webidl.spec.whatwg.org/#idl-unsigned-long-long">https://webidl.spec.whatwg.org/#idl-unsigned-long-long</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-idl-unsigned-long-long">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-idl-unsigned-long-long①">(2)</a> <a href="#ref-for-idl-unsigned-long-long②">(3)</a> <a href="#ref-for-idl-unsigned-long-long③">(4)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-upon-fulfillment">
-   <a href="https://webidl.spec.whatwg.org/#upon-fulfillment">https://webidl.spec.whatwg.org/#upon-fulfillment</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-upon-fulfillment">2.1. Concepts</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="term-for-wait-for-all">
-   <a href="https://webidl.spec.whatwg.org/#wait-for-all">https://webidl.spec.whatwg.org/#wait-for-all</a><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-wait-for-all">2.1. Concepts</a>
+    <li><a href="#ref-for-this">2.3.1. The queryPermission() method</a>
+    <li><a href="#ref-for-this①">2.3.2. The requestPermission() method</a>
+    <li><a href="#ref-for-this②">3.3. The showOpenFilePicker() method</a>
+    <li><a href="#ref-for-this③">3.4. The showSaveFilePicker() method</a>
+    <li><a href="#ref-for-this④">3.5. The showDirectoryPicker() method</a>
    </ul>
   </aside>
   <h3 class="no-num no-ref heading settled" id="index-defined-elsewhere"><span class="content">Terms defined by reference</span><a class="self-link" href="#index-defined-elsewhere"></a></h3>
   <ul class="index">
    <li>
-    <a data-link-type="biblio">[ECMASCRIPT]</a> defines the following terms:
+    <a data-link-type="biblio">[FS]</a> defines the following terms:
     <ul>
-     <li><span class="dfn-paneled" id="term-for-realm">realm</span>
-    </ul>
-   <li>
-    <a data-link-type="biblio">[ENCODING]</a> defines the following terms:
-    <ul>
-     <li><span class="dfn-paneled" id="term-for-utf-8-encode">utf-8 encode</span>
-    </ul>
-   <li>
-    <a data-link-type="biblio">[FILE-API]</a> defines the following terms:
-    <ul>
-     <li><span class="dfn-paneled" id="term-for-dfn-Blob">Blob</span>
-     <li><span class="dfn-paneled" id="term-for-dfn-file">File</span>
-     <li><span class="dfn-paneled" id="term-for-dfn-lastModified">lastModified</span>
-     <li><span class="dfn-paneled" id="term-for-dfn-name">name</span>
-     <li><span class="dfn-paneled" id="term-for-readOperation">read operation</span>
-     <li><span class="dfn-paneled" id="term-for-snapshot-state">snapshot state</span>
-     <li><span class="dfn-paneled" id="term-for-dfn-type">type</span>
-     <li><span class="dfn-paneled" id="term-for-UnixEpoch">unix epoch</span>
+     <li><span class="dfn-paneled" id="term-for-filesystemdirectoryhandle">FileSystemDirectoryHandle</span>
+     <li><span class="dfn-paneled" id="term-for-filesystemfilehandle">FileSystemFileHandle</span>
+     <li><span class="dfn-paneled" id="term-for-filesystemhandle">FileSystemHandle</span>
+     <li><span class="dfn-paneled" id="term-for-file-entry-binary-data">binary data</span>
+     <li><span class="dfn-paneled" id="term-for-directory">directory entry</span>
+     <li><span class="dfn-paneled" id="term-for-filesystemhandle-entry">entry</span>
+     <li><span class="dfn-paneled" id="term-for-file">file entry</span>
+     <li><span class="dfn-paneled" id="term-for-entry">file system entry</span>
+     <li><span class="dfn-paneled" id="term-for-origin-private-file-system">origin private file system</span>
+     <li><span class="dfn-paneled" id="term-for-entry-parent">parent</span>
+     <li><span class="dfn-paneled" id="term-for-dom-filesystemwritablefilestream-truncate">truncate(size)</span>
     </ul>
    <li>
     <a data-link-type="biblio">[HTML]</a> defines the following terms:
@@ -4395,8 +2845,6 @@ <h3 class="no-num no-ref heading settled" id="index-defined-elsewhere"><span cla
      <li><span class="dfn-paneled" id="term-for-activation-notification">activation notification</span>
      <li><span class="dfn-paneled" id="term-for-as-a-download">as a download</span>
      <li><span class="dfn-paneled" id="term-for-window-bc">browsing context</span>
-     <li><span class="dfn-paneled" id="term-for-current-settings-object">current settings object</span>
-     <li><span class="dfn-paneled" id="term-for-deserialization-steps">deserialization steps</span>
      <li><span class="dfn-paneled" id="term-for-environment-settings-object">environment settings object</span>
      <li><span class="dfn-paneled" id="term-for-concept-settings-object-global">global object</span>
      <li><span class="dfn-paneled" id="term-for-in-parallel">in parallel</span>
@@ -4406,11 +2854,8 @@ <h3 class="no-num no-ref heading settled" id="index-defined-elsewhere"><span cla
      <li><span class="dfn-paneled" id="term-for-concept-settings-object-origin">origin <small>(for environment settings object)</small></span>
      <li><span class="dfn-paneled" id="term-for-concept-dnd-ro">read-only mode</span>
      <li><span class="dfn-paneled" id="term-for-concept-dnd-rw">read/write mode</span>
-     <li><span class="dfn-paneled" id="term-for-concept-relevant-realm">relevant realm</span>
      <li><span class="dfn-paneled" id="term-for-relevant-settings-object">relevant settings object</span>
      <li><span class="dfn-paneled" id="term-for-same-origin">same origin</span>
-     <li><span class="dfn-paneled" id="term-for-serializable-objects">serializable objects</span>
-     <li><span class="dfn-paneled" id="term-for-serialization-steps">serialization steps</span>
      <li><span class="dfn-paneled" id="term-for-the-drag-data-item-kind">the drag data item kind</span>
      <li><span class="dfn-paneled" id="term-for-concept-environment-top-level-origin">top-level origin</span>
      <li><span class="dfn-paneled" id="term-for-transient-activation">transient activation</span>
@@ -4418,27 +2863,18 @@ <h3 class="no-num no-ref heading settled" id="index-defined-elsewhere"><span cla
    <li>
     <a data-link-type="biblio">[INFRA]</a> defines the following terms:
     <ul>
-     <li><span class="dfn-paneled" id="term-for-list-append">append <small>(for list)</small></span>
-     <li><span class="dfn-paneled" id="term-for-set-append">append <small>(for set)</small></span>
+     <li><span class="dfn-paneled" id="term-for-list-append">append</span>
      <li><span class="dfn-paneled" id="term-for-ascii-alphanumeric">ascii alphanumeric</span>
-     <li><span class="dfn-paneled" id="term-for-assert">assert</span>
      <li><span class="dfn-paneled" id="term-for-byte-sequence">byte sequence</span>
      <li><span class="dfn-paneled" id="term-for-code-point">code point</span>
-     <li><span class="dfn-paneled" id="term-for-list-contain">contain</span>
-     <li><span class="dfn-paneled" id="term-for-javascript-string-convert">convert</span>
      <li><span class="dfn-paneled" id="term-for-list-empty">empty</span>
      <li><span class="dfn-paneled" id="term-for-map-exists">exist</span>
      <li><span class="dfn-paneled" id="term-for-list-iterate">for each <small>(for list)</small></span>
      <li><span class="dfn-paneled" id="term-for-map-iterate">for each <small>(for map)</small></span>
      <li><span class="dfn-paneled" id="term-for-implementation-defined">implementation-defined</span>
-     <li><span class="dfn-paneled" id="term-for-list-is-empty">is empty</span>
-     <li><span class="dfn-paneled" id="term-for-byte-sequence-length">length <small>(for byte sequence)</small></span>
-     <li><span class="dfn-paneled" id="term-for-string-length">length <small>(for string)</small></span>
+     <li><span class="dfn-paneled" id="term-for-string-length">length</span>
      <li><span class="dfn-paneled" id="term-for-list">list</span>
      <li><span class="dfn-paneled" id="term-for-ordered-map">map</span>
-     <li><span class="dfn-paneled" id="term-for-list-prepend">prepend</span>
-     <li><span class="dfn-paneled" id="term-for-list-remove">remove</span>
-     <li><span class="dfn-paneled" id="term-for-ordered-set">set</span>
      <li><span class="dfn-paneled" id="term-for-string-starts-with">starts with</span>
      <li><span class="dfn-paneled" id="term-for-string">string</span>
      <li><span class="dfn-paneled" id="term-for-tuple">tuple</span>
@@ -4481,78 +2917,36 @@ <h3 class="no-num no-ref heading settled" id="index-defined-elsewhere"><span cla
    <li>
     <a data-link-type="biblio">[STORAGE]</a> defines the following terms:
     <ul>
-     <li><span class="dfn-paneled" id="term-for-storagemanager">StorageManager</span>
-     <li><span class="dfn-paneled" id="term-for-storage-endpoint-identifier">identifier</span>
-     <li><span class="dfn-paneled" id="term-for-obtain-a-local-storage-bottle-map">obtain a local storage bottle map</span>
-     <li><span class="dfn-paneled" id="term-for-storage-endpoint-quota">quota</span>
      <li><span class="dfn-paneled" id="term-for-site-storage">storage</span>
-     <li><span class="dfn-paneled" id="term-for-storage-endpoint">storage endpoint</span>
      <li><span class="dfn-paneled" id="term-for-storage-quota">storage quota</span>
-     <li><span class="dfn-paneled" id="term-for-storage-endpoint-types">types</span>
-    </ul>
-   <li>
-    <a data-link-type="biblio">[STREAMS]</a> defines the following terms:
-    <ul>
-     <li><span class="dfn-paneled" id="term-for-readablestream">ReadableStream</span>
-     <li><span class="dfn-paneled" id="term-for-writablestream">WritableStream</span>
-     <li><span class="dfn-paneled" id="term-for-writablestreamdefaultwriter">WritableStreamDefaultWriter</span>
-     <li><span class="dfn-paneled" id="term-for-writablestream-set-up-closealgorithm">closealgorithm</span>
-     <li><span class="dfn-paneled" id="term-for-ws-get-writer">getWriter()</span>
-     <li><span class="dfn-paneled" id="term-for-writablestream-get-a-writer">getting a writer</span>
-     <li><span class="dfn-paneled" id="term-for-writablestream-set-up-highwatermark">highwatermark</span>
-     <li><span class="dfn-paneled" id="term-for-writablestreamdefaultwriter-release">release</span>
-     <li><span class="dfn-paneled" id="term-for-writablestream-set-up">set up</span>
-     <li><span class="dfn-paneled" id="term-for-writablestream-set-up-sizealgorithm">sizealgorithm</span>
-     <li><span class="dfn-paneled" id="term-for-default-writer-write">write()</span>
-     <li><span class="dfn-paneled" id="term-for-writablestream-set-up-writealgorithm">writealgorithm</span>
-     <li><span class="dfn-paneled" id="term-for-writablestreamdefaultwriter-write-a-chunk">writing a chunk</span>
     </ul>
    <li>
     <a data-link-type="biblio">[WEBIDL]</a> defines the following terms:
     <ul>
      <li><span class="dfn-paneled" id="term-for-aborterror">AbortError</span>
-     <li><span class="dfn-paneled" id="term-for-BufferSource">BufferSource</span>
      <li><span class="dfn-paneled" id="term-for-idl-DOMString">DOMString</span>
-     <li><span class="dfn-paneled" id="term-for-datacloneerror">DataCloneError</span>
      <li><span class="dfn-paneled" id="term-for-Exposed">Exposed</span>
-     <li><span class="dfn-paneled" id="term-for-invalidmodificationerror">InvalidModificationError</span>
-     <li><span class="dfn-paneled" id="term-for-notallowederror">NotAllowedError</span>
-     <li><span class="dfn-paneled" id="term-for-notfounderror">NotFoundError</span>
      <li><span class="dfn-paneled" id="term-for-idl-promise">Promise</span>
-     <li><span class="dfn-paneled" id="term-for-quotaexceedederror">QuotaExceededError</span>
      <li><span class="dfn-paneled" id="term-for-SecureContext">SecureContext</span>
      <li><span class="dfn-paneled" id="term-for-securityerror">SecurityError</span>
      <li><span class="dfn-paneled" id="term-for-exceptiondef-typeerror">TypeError</span>
-     <li><span class="dfn-paneled" id="term-for-typemismatcherror">TypeMismatchError</span>
      <li><span class="dfn-paneled" id="term-for-idl-USVString">USVString</span>
      <li><span class="dfn-paneled" id="term-for-a-new-promise">a new promise</span>
      <li><span class="dfn-paneled" id="term-for-a-promise-rejected-with">a promise rejected with</span>
      <li><span class="dfn-paneled" id="term-for-a-promise-resolved-with">a promise resolved with</span>
-     <li><span class="dfn-paneled" id="term-for-asynchronous-iterator-initialization-steps">asynchronous iterator initialization steps</span>
      <li><span class="dfn-paneled" id="term-for-idl-boolean">boolean</span>
-     <li><span class="dfn-paneled" id="term-for-dfn-get-buffer-source-copy">get a copy of the buffer source</span>
-     <li><span class="dfn-paneled" id="term-for-dfn-get-the-next-iteration-result">get the next iteration result</span>
-     <li><span class="dfn-paneled" id="term-for-new">new</span>
      <li><span class="dfn-paneled" id="term-for-idl-record">record</span>
      <li><span class="dfn-paneled" id="term-for-reject">reject</span>
      <li><span class="dfn-paneled" id="term-for-resolve">resolve</span>
      <li><span class="dfn-paneled" id="term-for-idl-sequence">sequence</span>
      <li><span class="dfn-paneled" id="term-for-this">this</span>
-     <li><span class="dfn-paneled" id="term-for-idl-undefined">undefined</span>
-     <li><span class="dfn-paneled" id="term-for-idl-unsigned-long-long">unsigned long long</span>
-     <li><span class="dfn-paneled" id="term-for-upon-fulfillment">upon fulfillment</span>
-     <li><span class="dfn-paneled" id="term-for-wait-for-all">wait for all</span>
     </ul>
   </ul>
   <h2 class="no-num no-ref heading settled" id="references"><span class="content">References</span><a class="self-link" href="#references"></a></h2>
   <h3 class="no-num no-ref heading settled" id="normative"><span class="content">Normative References</span><a class="self-link" href="#normative"></a></h3>
   <dl>
-   <dt id="biblio-ecmascript">[ECMASCRIPT]
-   <dd><a href="https://tc39.es/ecma262/multipage/"><cite>ECMAScript Language Specification</cite></a>. URL: <a href="https://tc39.es/ecma262/multipage/">https://tc39.es/ecma262/multipage/</a>
-   <dt id="biblio-encoding">[ENCODING]
-   <dd>Anne van Kesteren. <a href="https://encoding.spec.whatwg.org/"><cite>Encoding Standard</cite></a>. Living Standard. URL: <a href="https://encoding.spec.whatwg.org/">https://encoding.spec.whatwg.org/</a>
-   <dt id="biblio-file-api">[FILE-API]
-   <dd>Marijn Kruisselbrink. <a href="https://w3c.github.io/FileAPI/"><cite>File API</cite></a>. URL: <a href="https://w3c.github.io/FileAPI/">https://w3c.github.io/FileAPI/</a>
+   <dt id="biblio-fs">[FS]
+   <dd>Marijn Kruisselbrink. <a href="https://fs.spec.whatwg.org/"><cite>File System Standard</cite></a>. Living Standard. URL: <a href="https://fs.spec.whatwg.org/">https://fs.spec.whatwg.org/</a>
    <dt id="biblio-html">[HTML]
    <dd>Anne van Kesteren; et al. <a href="https://html.spec.whatwg.org/multipage/"><cite>HTML Standard</cite></a>. Living Standard. URL: <a href="https://html.spec.whatwg.org/multipage/">https://html.spec.whatwg.org/multipage/</a>
    <dt id="biblio-infra">[INFRA]
@@ -4567,8 +2961,6 @@ <h3 class="no-num no-ref heading settled" id="normative"><span class="content">N
    <dd>S. Bradner. <a href="https://datatracker.ietf.org/doc/html/rfc2119"><cite>Key words for use in RFCs to Indicate Requirement Levels</cite></a>. March 1997. Best Current Practice. URL: <a href="https://datatracker.ietf.org/doc/html/rfc2119">https://datatracker.ietf.org/doc/html/rfc2119</a>
    <dt id="biblio-storage">[STORAGE]
    <dd>Anne van Kesteren. <a href="https://storage.spec.whatwg.org/"><cite>Storage Standard</cite></a>. Living Standard. URL: <a href="https://storage.spec.whatwg.org/">https://storage.spec.whatwg.org/</a>
-   <dt id="biblio-streams">[STREAMS]
-   <dd>Adam Rice; et al. <a href="https://streams.spec.whatwg.org/"><cite>Streams Standard</cite></a>. Living Standard. URL: <a href="https://streams.spec.whatwg.org/">https://streams.spec.whatwg.org/</a>
    <dt id="biblio-webidl">[WEBIDL]
    <dd>Edgar Chen; Timothy Gu. <a href="https://webidl.spec.whatwg.org/"><cite>Web IDL Standard</cite></a>. Living Standard. URL: <a href="https://webidl.spec.whatwg.org/">https://webidl.spec.whatwg.org/</a>
   </dl>
@@ -4576,8 +2968,8 @@ <h3 class="no-num no-ref heading settled" id="informative"><span class="content"
   <dl>
    <dt id="biblio-entries-api">[ENTRIES-API]
    <dd><a href="https://wicg.github.io/entries-api/"><cite>File and Directory Entries API</cite></a>. cg-draft. URL: <a href="https://wicg.github.io/entries-api/">https://wicg.github.io/entries-api/</a>
-   <dt id="biblio-file-system-api">[FILE-SYSTEM-API]
-   <dd>Eric Uhrhane. <a href="https://dev.w3.org/2009/dap/file-system/file-dir-sys.html"><cite>File API: Directories and System</cite></a>. URL: <a href="https://dev.w3.org/2009/dap/file-system/file-dir-sys.html">https://dev.w3.org/2009/dap/file-system/file-dir-sys.html</a>
+   <dt id="biblio-file-api">[FILE-API]
+   <dd>Marijn Kruisselbrink. <a href="https://w3c.github.io/FileAPI/"><cite>File API</cite></a>. URL: <a href="https://w3c.github.io/FileAPI/">https://w3c.github.io/FileAPI/</a>
   </dl>
   <h2 class="no-num no-ref heading settled" id="idl-index"><span class="content">IDL Index</span><a class="self-link" href="#idl-index"></a></h2>
 <pre class="idl highlight def"><c- b>enum</c-> <a href="#enumdef-filesystempermissionmode"><code><c- g>FileSystemPermissionMode</c-></code></a> {
@@ -4586,7 +2978,7 @@ <h2 class="no-num no-ref heading settled" id="idl-index"><span class="content">I
 };
 
 <c- b>dictionary</c-> <a href="#dictdef-filesystempermissiondescriptor"><code><c- g>FileSystemPermissionDescriptor</c-></code></a> : <a data-link-type="idl-name" href="https://w3c.github.io/permissions/#dom-permissiondescriptor"><c- n>PermissionDescriptor</c-></a> {
-  <c- b>required</c-> <a data-link-type="idl-name" href="#filesystemhandle"><c- n>FileSystemHandle</c-></a> <a data-type="FileSystemHandle " href="#dom-filesystempermissiondescriptor-handle"><code><c- g>handle</c-></code></a>;
+  <c- b>required</c-> <a data-link-type="idl-name" href="https://fs.spec.whatwg.org/#filesystemhandle"><c- n>FileSystemHandle</c-></a> <a data-type="FileSystemHandle " href="#dom-filesystempermissiondescriptor-handle"><code><c- g>handle</c-></code></a>;
   <a data-link-type="idl-name" href="#enumdef-filesystempermissionmode"><c- n>FileSystemPermissionMode</c-></a> <a data-default="&quot;read&quot;" data-type="FileSystemPermissionMode " href="#dom-filesystempermissiondescriptor-mode"><code><c- g>mode</c-></code></a> = "read";
 };
 
@@ -4594,78 +2986,12 @@ <h2 class="no-num no-ref heading settled" id="idl-index"><span class="content">I
   <a data-link-type="idl-name" href="#enumdef-filesystempermissionmode"><c- n>FileSystemPermissionMode</c-></a> <a data-default="&quot;read&quot;" data-type="FileSystemPermissionMode " href="#dom-filesystemhandlepermissiondescriptor-mode"><code><c- g>mode</c-></code></a> = "read";
 };
 
-<c- b>enum</c-> <a href="#enumdef-filesystemhandlekind"><code><c- g>FileSystemHandleKind</c-></code></a> {
-  <a href="#dom-filesystemhandlekind-file"><code><c- s>"file"</c-></code></a>,
-  <a href="#dom-filesystemhandlekind-directory"><code><c- s>"directory"</c-></code></a>,
-};
-
 [<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#Exposed"><c- g>Exposed</c-></a>=(<c- n>Window</c->,<c- n>Worker</c->), <a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#SecureContext"><c- g>SecureContext</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/structured-data.html#serializable"><c- g>Serializable</c-></a>]
-<c- b>interface</c-> <a href="#filesystemhandle"><code><c- g>FileSystemHandle</c-></code></a> {
-  <c- b>readonly</c-> <c- b>attribute</c-> <a data-link-type="idl-name" href="#enumdef-filesystemhandlekind"><c- n>FileSystemHandleKind</c-></a> <a class="idl-code" data-link-type="attribute" data-readonly data-type="FileSystemHandleKind" href="#dom-filesystemhandle-kind"><c- g>kind</c-></a>;
-  <c- b>readonly</c-> <c- b>attribute</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString"><c- b>USVString</c-></a> <a class="idl-code" data-link-type="attribute" data-readonly data-type="USVString" href="#dom-filesystemhandle-name"><c- g>name</c-></a>;
-
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise"><c- b>Promise</c-></a>&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-boolean"><c- b>boolean</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-filesystemhandle-issameentry"><c- g>isSameEntry</c-></a>(<a data-link-type="idl-name" href="#filesystemhandle"><c- n>FileSystemHandle</c-></a> <a href="#dom-filesystemhandle-issameentry-other-other"><code><c- g>other</c-></code></a>);
-
+<c- b>partial</c-> <c- b>interface</c-> <a class="idl-code" data-link-type="interface" href="https://fs.spec.whatwg.org/#filesystemhandle"><c- g>FileSystemHandle</c-></a> {
   <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="https://w3c.github.io/permissions/#dom-permissionstate"><c- n>PermissionState</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-filesystemhandle-querypermission"><c- g>queryPermission</c-></a>(<c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-filesystemhandlepermissiondescriptor"><c- n>FileSystemHandlePermissionDescriptor</c-></a> <a href="#dom-filesystemhandle-querypermission-descriptor-descriptor"><code><c- g>descriptor</c-></code></a> = {});
   <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="https://w3c.github.io/permissions/#dom-permissionstate"><c- n>PermissionState</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-filesystemhandle-requestpermission"><c- g>requestPermission</c-></a>(<c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-filesystemhandlepermissiondescriptor"><c- n>FileSystemHandlePermissionDescriptor</c-></a> <a href="#dom-filesystemhandle-requestpermission-descriptor-descriptor"><code><c- g>descriptor</c-></code></a> = {});
 };
 
-<c- b>dictionary</c-> <a href="#dictdef-filesystemcreatewritableoptions"><code><c- g>FileSystemCreateWritableOptions</c-></code></a> {
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-boolean"><c- b>boolean</c-></a> <a data-default="false" data-type="boolean " href="#dom-filesystemcreatewritableoptions-keepexistingdata"><code><c- g>keepExistingData</c-></code></a> = <c- b>false</c->;
-};
-
-[<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#Exposed"><c- g>Exposed</c-></a>=(<c- n>Window</c->,<c- n>Worker</c->), <a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#SecureContext"><c- g>SecureContext</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/structured-data.html#serializable"><c- g>Serializable</c-></a>]
-<c- b>interface</c-> <a href="#filesystemfilehandle"><code><c- g>FileSystemFileHandle</c-></code></a> : <a data-link-type="idl-name" href="#filesystemhandle"><c- n>FileSystemHandle</c-></a> {
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="https://w3c.github.io/FileAPI/#dfn-file"><c- n>File</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-filesystemfilehandle-getfile"><c- g>getFile</c-></a>();
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="#filesystemwritablefilestream"><c- n>FileSystemWritableFileStream</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-filesystemfilehandle-createwritable"><c- g>createWritable</c-></a>(<c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-filesystemcreatewritableoptions"><c- n>FileSystemCreateWritableOptions</c-></a> <a href="#dom-filesystemfilehandle-createwritable-options-options"><code><c- g>options</c-></code></a> = {});
-};
-
-<c- b>dictionary</c-> <a href="#dictdef-filesystemgetfileoptions"><code><c- g>FileSystemGetFileOptions</c-></code></a> {
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-boolean"><c- b>boolean</c-></a> <a data-default="false" data-type="boolean " href="#dom-filesystemgetfileoptions-create"><code><c- g>create</c-></code></a> = <c- b>false</c->;
-};
-
-<c- b>dictionary</c-> <a href="#dictdef-filesystemgetdirectoryoptions"><code><c- g>FileSystemGetDirectoryOptions</c-></code></a> {
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-boolean"><c- b>boolean</c-></a> <a data-default="false" data-type="boolean " href="#dom-filesystemgetdirectoryoptions-create"><code><c- g>create</c-></code></a> = <c- b>false</c->;
-};
-
-<c- b>dictionary</c-> <a href="#dictdef-filesystemremoveoptions"><code><c- g>FileSystemRemoveOptions</c-></code></a> {
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-boolean"><c- b>boolean</c-></a> <a data-default="false" data-type="boolean " href="#dom-filesystemremoveoptions-recursive"><code><c- g>recursive</c-></code></a> = <c- b>false</c->;
-};
-
-[<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#Exposed"><c- g>Exposed</c-></a>=(<c- n>Window</c->,<c- n>Worker</c->), <a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#SecureContext"><c- g>SecureContext</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/structured-data.html#serializable"><c- g>Serializable</c-></a>]
-<c- b>interface</c-> <a href="#filesystemdirectoryhandle"><code><c- g>FileSystemDirectoryHandle</c-></code></a> : <a data-link-type="idl-name" href="#filesystemhandle"><c- n>FileSystemHandle</c-></a> {
-  <c- b>async</c-> <c- b>iterable</c->&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString"><c- b>USVString</c-></a>, <a data-link-type="idl-name" href="#filesystemhandle"><c- n>FileSystemHandle</c-></a>>;
-
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="#filesystemfilehandle"><c- n>FileSystemFileHandle</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-filesystemdirectoryhandle-getfilehandle"><c- g>getFileHandle</c-></a>(<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString"><c- b>USVString</c-></a> <a href="#dom-filesystemdirectoryhandle-getfilehandle-name-options-name"><code><c- g>name</c-></code></a>, <c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-filesystemgetfileoptions"><c- n>FileSystemGetFileOptions</c-></a> <a href="#dom-filesystemdirectoryhandle-getfilehandle-name-options-options"><code><c- g>options</c-></code></a> = {});
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="#filesystemdirectoryhandle"><c- n>FileSystemDirectoryHandle</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-filesystemdirectoryhandle-getdirectoryhandle"><c- g>getDirectoryHandle</c-></a>(<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString"><c- b>USVString</c-></a> <a href="#dom-filesystemdirectoryhandle-getdirectoryhandle-name-options-name"><code><c- g>name</c-></code></a>, <c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-filesystemgetdirectoryoptions"><c- n>FileSystemGetDirectoryOptions</c-></a> <a href="#dom-filesystemdirectoryhandle-getdirectoryhandle-name-options-options"><code><c- g>options</c-></code></a> = {});
-
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise"><c- b>Promise</c-></a>&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-undefined"><c- b>undefined</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-filesystemdirectoryhandle-removeentry"><c- g>removeEntry</c-></a>(<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString"><c- b>USVString</c-></a> <a href="#dom-filesystemdirectoryhandle-removeentry-name-options-name"><code><c- g>name</c-></code></a>, <c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-filesystemremoveoptions"><c- n>FileSystemRemoveOptions</c-></a> <a href="#dom-filesystemdirectoryhandle-removeentry-name-options-options"><code><c- g>options</c-></code></a> = {});
-
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise"><c- b>Promise</c-></a>&lt;<a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#idl-sequence"><c- b>sequence</c-></a>&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString"><c- b>USVString</c-></a>>?> <a class="idl-code" data-link-type="method" href="#dom-filesystemdirectoryhandle-resolve"><c- g>resolve</c-></a>(<a data-link-type="idl-name" href="#filesystemhandle"><c- n>FileSystemHandle</c-></a> <a href="#dom-filesystemdirectoryhandle-resolve-possibledescendant-possibledescendant"><code><c- g>possibleDescendant</c-></code></a>);
-};
-
-<c- b>enum</c-> <a href="#enumdef-writecommandtype"><code><c- g>WriteCommandType</c-></code></a> {
-  <a href="#dom-writecommandtype-write"><code><c- s>"write"</c-></code></a>,
-  <a href="#dom-writecommandtype-seek"><code><c- s>"seek"</c-></code></a>,
-  <a href="#dom-writecommandtype-truncate"><code><c- s>"truncate"</c-></code></a>,
-};
-
-<c- b>dictionary</c-> <a href="#dictdef-writeparams"><code><c- g>WriteParams</c-></code></a> {
-  <c- b>required</c-> <a data-link-type="idl-name" href="#enumdef-writecommandtype"><c- n>WriteCommandType</c-></a> <a data-type="WriteCommandType " href="#dom-writeparams-type"><code><c- g>type</c-></code></a>;
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-unsigned-long-long"><c- b>unsigned</c-> <c- b>long</c-> <c- b>long</c-></a>? <a data-type="unsigned long long? " href="#dom-writeparams-size"><code><c- g>size</c-></code></a>;
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-unsigned-long-long"><c- b>unsigned</c-> <c- b>long</c-> <c- b>long</c-></a>? <a data-type="unsigned long long? " href="#dom-writeparams-position"><code><c- g>position</c-></code></a>;
-  (<a data-link-type="idl-name" href="https://webidl.spec.whatwg.org/#BufferSource"><c- n>BufferSource</c-></a> <c- b>or</c-> <a data-link-type="idl-name" href="https://w3c.github.io/FileAPI/#dfn-Blob"><c- n>Blob</c-></a> <c- b>or</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString"><c- b>USVString</c-></a>)? <a data-type="(BufferSource or Blob or USVString)? " href="#dom-writeparams-data"><code><c- g>data</c-></code></a>;
-};
-
-<c- b>typedef</c-> (<a data-link-type="idl-name" href="https://webidl.spec.whatwg.org/#BufferSource"><c- n>BufferSource</c-></a> <c- b>or</c-> <a data-link-type="idl-name" href="https://w3c.github.io/FileAPI/#dfn-Blob"><c- n>Blob</c-></a> <c- b>or</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString"><c- b>USVString</c-></a> <c- b>or</c-> <a data-link-type="idl-name" href="#dictdef-writeparams"><c- n>WriteParams</c-></a>) <a href="#typedefdef-filesystemwritechunktype"><code><c- g>FileSystemWriteChunkType</c-></code></a>;
-
-[<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#Exposed"><c- g>Exposed</c-></a>=(<c- n>Window</c->,<c- n>Worker</c->), <a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#SecureContext"><c- g>SecureContext</c-></a>]
-<c- b>interface</c-> <a href="#filesystemwritablefilestream"><code><c- g>FileSystemWritableFileStream</c-></code></a> : <a data-link-type="idl-name" href="https://streams.spec.whatwg.org/#writablestream"><c- n>WritableStream</c-></a> {
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise"><c- b>Promise</c-></a>&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-undefined"><c- b>undefined</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-filesystemwritablefilestream-write"><c- g>write</c-></a>(<a data-link-type="idl-name" href="#typedefdef-filesystemwritechunktype"><c- n>FileSystemWriteChunkType</c-></a> <a href="#dom-filesystemwritablefilestream-write-data-data"><code><c- g>data</c-></code></a>);
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise"><c- b>Promise</c-></a>&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-undefined"><c- b>undefined</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-filesystemwritablefilestream-seek"><c- g>seek</c-></a>(<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-unsigned-long-long"><c- b>unsigned</c-> <c- b>long</c-> <c- b>long</c-></a> <a href="#dom-filesystemwritablefilestream-seek-position-position"><code><c- g>position</c-></code></a>);
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise"><c- b>Promise</c-></a>&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-undefined"><c- b>undefined</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-filesystemwritablefilestream-truncate"><c- g>truncate</c-></a>(<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-unsigned-long-long"><c- b>unsigned</c-> <c- b>long</c-> <c- b>long</c-></a> <a href="#dom-filesystemwritablefilestream-truncate-size-size"><code><c- g>size</c-></code></a>);
-};
-
 <c- b>enum</c-> <a class="idl-code" data-link-type="enum" href="#enumdef-wellknowndirectory"><c- g>WellKnownDirectory</c-></a> {
   <a class="idl-code" data-link-type="enum-value" href="#dom-wellknowndirectory-desktop"><c- s>"desktop"</c-></a>,
   <a class="idl-code" data-link-type="enum-value" href="#dom-wellknowndirectory-documents"><c- s>"documents"</c-></a>,
@@ -4675,7 +3001,7 @@ <h2 class="no-num no-ref heading settled" id="idl-index"><span class="content">I
   <a class="idl-code" data-link-type="enum-value" href="#dom-wellknowndirectory-videos"><c- s>"videos"</c-></a>,
 };
 
-<c- b>typedef</c-> (<a data-link-type="idl-name" href="#enumdef-wellknowndirectory"><c- n>WellKnownDirectory</c-></a> <c- b>or</c-> <a data-link-type="idl-name" href="#filesystemhandle"><c- n>FileSystemHandle</c-></a>) <a href="#typedefdef-startindirectory"><code><c- g>StartInDirectory</c-></code></a>;
+<c- b>typedef</c-> (<a data-link-type="idl-name" href="#enumdef-wellknowndirectory"><c- n>WellKnownDirectory</c-></a> <c- b>or</c-> <a data-link-type="idl-name" href="https://fs.spec.whatwg.org/#filesystemhandle"><c- n>FileSystemHandle</c-></a>) <a href="#typedefdef-startindirectory"><code><c- g>StartInDirectory</c-></code></a>;
 
 <c- b>dictionary</c-> <a href="#dictdef-filepickeraccepttype"><code><c- g>FilePickerAcceptType</c-></code></a> {
     <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString"><c- b>USVString</c-></a> <a data-type="USVString " href="#dom-filepickeraccepttype-description"><code><c- g>description</c-></code></a>;
@@ -4705,170 +3031,31 @@ <h2 class="no-num no-ref heading settled" id="idl-index"><span class="content">I
 
 [<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#SecureContext"><c- g>SecureContext</c-></a>]
 <c- b>partial</c-> <c- b>interface</c-> <a class="idl-code" data-link-type="interface" href="https://html.spec.whatwg.org/multipage/nav-history-apis.html#window"><c- g>Window</c-></a> {
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise"><c- b>Promise</c-></a>&lt;<a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#idl-sequence"><c- b>sequence</c-></a>&lt;<a data-link-type="idl-name" href="#filesystemfilehandle"><c- n>FileSystemFileHandle</c-></a>>> <a class="idl-code" data-link-type="method" href="#dom-window-showopenfilepicker"><c- g>showOpenFilePicker</c-></a>(<c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-openfilepickeroptions"><c- n>OpenFilePickerOptions</c-></a> <a href="#dom-window-showopenfilepicker-options-options"><code><c- g>options</c-></code></a> = {});
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="#filesystemfilehandle"><c- n>FileSystemFileHandle</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-window-showsavefilepicker"><c- g>showSaveFilePicker</c-></a>(<c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-savefilepickeroptions"><c- n>SaveFilePickerOptions</c-></a> <a href="#dom-window-showsavefilepicker-options-options"><code><c- g>options</c-></code></a> = {});
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="#filesystemdirectoryhandle"><c- n>FileSystemDirectoryHandle</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-window-showdirectorypicker"><c- g>showDirectoryPicker</c-></a>(<c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-directorypickeroptions"><c- n>DirectoryPickerOptions</c-></a> <a href="#dom-window-showdirectorypicker-options-options"><code><c- g>options</c-></code></a> = {});
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise"><c- b>Promise</c-></a>&lt;<a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#idl-sequence"><c- b>sequence</c-></a>&lt;<a data-link-type="idl-name" href="https://fs.spec.whatwg.org/#filesystemfilehandle"><c- n>FileSystemFileHandle</c-></a>>> <a class="idl-code" data-link-type="method" href="#dom-window-showopenfilepicker"><c- g>showOpenFilePicker</c-></a>(<c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-openfilepickeroptions"><c- n>OpenFilePickerOptions</c-></a> <a href="#dom-window-showopenfilepicker-options-options"><code><c- g>options</c-></code></a> = {});
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="https://fs.spec.whatwg.org/#filesystemfilehandle"><c- n>FileSystemFileHandle</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-window-showsavefilepicker"><c- g>showSaveFilePicker</c-></a>(<c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-savefilepickeroptions"><c- n>SaveFilePickerOptions</c-></a> <a href="#dom-window-showsavefilepicker-options-options"><code><c- g>options</c-></code></a> = {});
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="https://fs.spec.whatwg.org/#filesystemdirectoryhandle"><c- n>FileSystemDirectoryHandle</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-window-showdirectorypicker"><c- g>showDirectoryPicker</c-></a>(<c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-directorypickeroptions"><c- n>DirectoryPickerOptions</c-></a> <a href="#dom-window-showdirectorypicker-options-options"><code><c- g>options</c-></code></a> = {});
 };
 
 <c- b>partial</c-> <c- b>interface</c-> <a class="idl-code" data-link-type="interface" href="https://html.spec.whatwg.org/multipage/dnd.html#datatransferitem"><c- g>DataTransferItem</c-></a> {
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="#filesystemhandle"><c- n>FileSystemHandle</c-></a>?> <a class="idl-code" data-link-type="method" href="#dom-datatransferitem-getasfilesystemhandle"><c- g>getAsFileSystemHandle</c-></a>();
-};
-
-[<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#SecureContext"><c- g>SecureContext</c-></a>]
-<c- b>partial</c-> <c- b>interface</c-> <a class="idl-code" data-link-type="interface" href="https://storage.spec.whatwg.org/#storagemanager"><c- g>StorageManager</c-></a> {
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="#filesystemdirectoryhandle"><c- n>FileSystemDirectoryHandle</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-storagemanager-getdirectory"><c- g>getDirectory</c-></a>();
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="https://fs.spec.whatwg.org/#filesystemhandle"><c- n>FileSystemHandle</c-></a>?> <a class="idl-code" data-link-type="method" href="#dom-datatransferitem-getasfilesystemhandle"><c- g>getAsFileSystemHandle</c-></a>();
 };
 
 </pre>
   <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content">Issues Index</span><a class="self-link" href="#issues-index"></a></h2>
   <div style="counter-reset:issue">
-   <div class="issue"> We should consider having further normative restrictions on file names that will
-never be allowed using this API, rather than leaving it entirely up to underlying file
-systems. <a class="issue-return" href="#issue-58d5d75b" title="Jump to section">↵</a></div>
-   <div class="issue"> TODO: Explain better how entries map to files on disk (multiple entries can map to the same file or
-directory on disk but an entry doesn’t have to map to any file on disk). <a class="issue-return" href="#issue-88e7ec9d" title="Jump to section">↵</a></div>
    <div class="issue"> Ideally this user activation requirement would be defined upstream. <a href="https://github.com/WICG/permissions-request/issues/2">[Issue #WICG/permissions-request#2]</a> <a class="issue-return" href="#issue-88417955" title="Jump to section">↵</a></div>
    <div class="issue"> Currently <code class="idl"><a data-link-type="idl" href="#enumdef-filesystempermissionmode">FileSystemPermissionMode</a></code> can only be <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-read">"read"</a></code> or <code class="idl"><a data-link-type="idl" href="#dom-filesystempermissionmode-readwrite">"readwrite"</a></code>. In
 the future we might want to add a "write" mode as well to support write-only handles. <a href="https://github.com/wicg/file-system-access/issues/119">[Issue #119]</a> <a class="issue-return" href="#issue-7fc2f5c7" title="Jump to section">↵</a></div>
-   <div class="issue"> The reading and snapshotting behavior needs to be better specified in the <a data-link-type="biblio" href="#biblio-file-api">[FILE-API]</a> spec,
- for now this is kind of hand-wavy. <a class="issue-return" href="#issue-1fb8bcae" title="Jump to section">↵</a></div>
-   <div class="issue"> There has been some discussion around and desire for a "inPlace" mode for createWritable
-(where changes will be written to the actual underlying file as they are written to the writer, for
-example to support in-place modification of large files or things like databases). This is not
-currently implemented in Chrome. Implementing this is currently blocked on figuring out how to
-combine the desire to run malware checks with the desire to let websites make fast in-place
-modifications to existing large files. <a href="https://github.com/wicg/file-system-access/issues/67">[Issue #67]</a> <a class="issue-return" href="#issue-0693bc11" title="Jump to section">↵</a></div>
-   <div class="issue"> In the future we might want to add arguments to the async iterable declaration to
-support for example recursive iteration. <a href="https://github.com/wicg/file-system-access/issues/173">[Issue #173]</a> <a class="issue-return" href="#issue-cce0bb28" title="Jump to section">↵</a></div>
-   <div class="issue"> Better specify what possible exceptions this could throw. <a href="https://github.com/wicg/file-system-access/issues/68">[Issue #68]</a> <a class="issue-return" href="#issue-721a33e4" title="Jump to section">↵</a></div>
-   <div class="issue"> Better specify what possible exceptions this could throw. <a href="https://github.com/wicg/file-system-access/issues/68">[Issue #68]</a> <a class="issue-return" href="#issue-721a33e4①" title="Jump to section">↵</a></div>
-   <div class="issue"> Better specify what possible exceptions this could throw. <a href="https://github.com/wicg/file-system-access/issues/68">[Issue #68]</a> <a class="issue-return" href="#issue-721a33e4②" title="Jump to section">↵</a></div>
    <div class="issue"> This currently does not block access to <a data-link-type="dfn" href="#wellknowndirectory-too-sensitive-or-dangerous">too sensitive or dangerous</a> directories, to
 be consistent with other APIs that give access to dropped files and directories. This is inconsistent
 with the <a data-link-type="dfn" href="#local-file-system-handle-factories">local file system handle factories</a> though, so we might want to reconsider this. <a class="issue-return" href="#issue-8306b646" title="Jump to section">↵</a></div>
-   <div class="issue"> Storage endpoints should be defined in <a data-link-type="biblio" href="#biblio-storage">[storage]</a> itself, rather
-than being defined here. So merge this into the table there. <a class="issue-return" href="#issue-9c98e739" title="Jump to section">↵</a></div>
   </div>
-  <aside class="dfn-panel" data-for="entry">
-   <b><a href="#entry">#entry</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-entry">2.1. Concepts</a> <a href="#ref-for-entry①">(2)</a> <a href="#ref-for-entry②">(3)</a> <a href="#ref-for-entry③">(4)</a> <a href="#ref-for-entry④">(5)</a> <a href="#ref-for-entry⑤">(6)</a> <a href="#ref-for-entry⑥">(7)</a> <a href="#ref-for-entry⑦">(8)</a> <a href="#ref-for-entry⑧">(9)</a>
-    <li><a href="#ref-for-entry⑨">2.2. Permissions</a>
-    <li><a href="#ref-for-entry①⓪">2.3. The FileSystemHandle interface</a> <a href="#ref-for-entry①①">(2)</a> <a href="#ref-for-entry①②">(3)</a>
-    <li><a href="#ref-for-entry①③">2.5.1. Directory iteration</a>
-    <li><a href="#ref-for-entry①④">3.2.2. Starting Directory</a> <a href="#ref-for-entry①⑤">(2)</a>
-    <li><a href="#ref-for-entry①⑥">3.6. Drag and Drop</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="entry-name">
-   <b><a href="#entry-name">#entry-name</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-entry-name">2.1. Concepts</a>
-    <li><a href="#ref-for-entry-name①">2.3. The FileSystemHandle interface</a> <a href="#ref-for-entry-name②">(2)</a>
-    <li><a href="#ref-for-entry-name③">2.4.1. The getFile() method</a> <a href="#ref-for-entry-name④">(2)</a>
-    <li><a href="#ref-for-entry-name⑤">2.5.1. Directory iteration</a> <a href="#ref-for-entry-name⑥">(2)</a> <a href="#ref-for-entry-name⑦">(3)</a>
-    <li><a href="#ref-for-entry-name⑧">2.5.2. The getFileHandle() method</a> <a href="#ref-for-entry-name⑨">(2)</a>
-    <li><a href="#ref-for-entry-name①⓪">2.5.3. The getDirectoryHandle() method</a> <a href="#ref-for-entry-name①①">(2)</a>
-    <li><a href="#ref-for-entry-name①②">2.5.4. The removeEntry() method</a>
-    <li><a href="#ref-for-entry-name①③">4. Accessing the Origin Private File System</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="valid-file-name">
-   <b><a href="#valid-file-name">#valid-file-name</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-valid-file-name">2.1. Concepts</a>
-    <li><a href="#ref-for-valid-file-name①">2.5.2. The getFileHandle() method</a>
-    <li><a href="#ref-for-valid-file-name②">2.5.3. The getDirectoryHandle() method</a>
-    <li><a href="#ref-for-valid-file-name③">2.5.4. The removeEntry() method</a>
-   </ul>
-  </aside>
   <aside class="dfn-panel" data-for="valid-suffix-code-point">
    <b><a href="#valid-suffix-code-point">#valid-suffix-code-point</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-valid-suffix-code-point">3.2.1. Accepted file types</a> <a href="#ref-for-valid-suffix-code-point①">(2)</a>
    </ul>
   </aside>
-  <aside class="dfn-panel" data-for="file">
-   <b><a href="#file">#file</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-file">2.1. Concepts</a> <a href="#ref-for-file①">(2)</a>
-    <li><a href="#ref-for-file②">2.3. The FileSystemHandle interface</a>
-    <li><a href="#ref-for-file③">2.4. The FileSystemFileHandle interface</a>
-    <li><a href="#ref-for-file④">2.5.1. Directory iteration</a>
-    <li><a href="#ref-for-file⑤">2.5.2. The getFileHandle() method</a>
-    <li><a href="#ref-for-file⑥">2.5.3. The getDirectoryHandle() method</a>
-    <li><a href="#ref-for-file⑦">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-file⑧">(2)</a>
-    <li><a href="#ref-for-file⑨">3.2.2. Starting Directory</a>
-    <li><a href="#ref-for-file①⓪">3.3. The showOpenFilePicker() method</a>
-    <li><a href="#ref-for-file①①">3.4. The showSaveFilePicker() method</a>
-    <li><a href="#ref-for-file①②">3.6. Drag and Drop</a> <a href="#ref-for-file①③">(2)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="file-entry-binary-data">
-   <b><a href="#file-entry-binary-data">#file-entry-binary-data</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-file-entry-binary-data">2.1. Concepts</a>
-    <li><a href="#ref-for-file-entry-binary-data①">2.4.1. The getFile() method</a>
-    <li><a href="#ref-for-file-entry-binary-data②">2.4.2. The createWritable() method</a>
-    <li><a href="#ref-for-file-entry-binary-data③">2.5.2. The getFileHandle() method</a>
-    <li><a href="#ref-for-file-entry-binary-data④">2.6. The FileSystemWritableFileStream interface</a>
-    <li><a href="#ref-for-file-entry-binary-data⑤">3.4. The showSaveFilePicker() method</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="file-entry-modification-timestamp">
-   <b><a href="#file-entry-modification-timestamp">#file-entry-modification-timestamp</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-file-entry-modification-timestamp">2.1. Concepts</a>
-    <li><a href="#ref-for-file-entry-modification-timestamp①">2.4.1. The getFile() method</a>
-    <li><a href="#ref-for-file-entry-modification-timestamp②">2.5.2. The getFileHandle() method</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="directory">
-   <b><a href="#directory">#directory</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-directory">2.1. Concepts</a> <a href="#ref-for-directory①">(2)</a> <a href="#ref-for-directory②">(3)</a> <a href="#ref-for-directory③">(4)</a>
-    <li><a href="#ref-for-directory④">2.5. The FileSystemDirectoryHandle interface</a>
-    <li><a href="#ref-for-directory⑤">2.5.2. The getFileHandle() method</a>
-    <li><a href="#ref-for-directory⑥">2.5.3. The getDirectoryHandle() method</a>
-    <li><a href="#ref-for-directory⑦">2.5.4. The removeEntry() method</a>
-    <li><a href="#ref-for-directory⑧">3.2.2. Starting Directory</a>
-    <li><a href="#ref-for-directory⑨">3.5. The showDirectoryPicker() method</a>
-    <li><a href="#ref-for-directory①⓪">3.6. Drag and Drop</a> <a href="#ref-for-directory①①">(2)</a>
-    <li><a href="#ref-for-directory①②">4. Accessing the Origin Private File System</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="directory-entry-children">
-   <b><a href="#directory-entry-children">#directory-entry-children</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-directory-entry-children">2.1. Concepts</a> <a href="#ref-for-directory-entry-children①">(2)</a> <a href="#ref-for-directory-entry-children②">(3)</a>
-    <li><a href="#ref-for-directory-entry-children③">2.5.1. Directory iteration</a>
-    <li><a href="#ref-for-directory-entry-children④">2.5.2. The getFileHandle() method</a> <a href="#ref-for-directory-entry-children⑤">(2)</a>
-    <li><a href="#ref-for-directory-entry-children⑥">2.5.3. The getDirectoryHandle() method</a> <a href="#ref-for-directory-entry-children⑦">(2)</a> <a href="#ref-for-directory-entry-children⑧">(3)</a>
-    <li><a href="#ref-for-directory-entry-children⑨">2.5.4. The removeEntry() method</a> <a href="#ref-for-directory-entry-children①⓪">(2)</a> <a href="#ref-for-directory-entry-children①①">(3)</a>
-    <li><a href="#ref-for-directory-entry-children①②">4. Accessing the Origin Private File System</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="entry-parent">
-   <b><a href="#entry-parent">#entry-parent</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-entry-parent">2.1. Concepts</a>
-    <li><a href="#ref-for-entry-parent①">2.2. Permissions</a> <a href="#ref-for-entry-parent②">(2)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="entry-the-same-as">
-   <b><a href="#entry-the-same-as">#entry-the-same-as</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-entry-the-same-as">2.1. Concepts</a>
-    <li><a href="#ref-for-entry-the-same-as①">2.3.1. The isSameEntry() method</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="entry-resolve">
-   <b><a href="#entry-resolve">#entry-resolve</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-entry-resolve">2.1. Concepts</a>
-    <li><a href="#ref-for-entry-resolve①">2.5.5. The resolve() method</a>
-   </ul>
-  </aside>
   <aside class="dfn-panel" data-for="dom-permissionname-file-system">
    <b><a href="#dom-permissionname-file-system">#dom-permissionname-file-system</a></b><b>Referenced in:</b>
    <ul>
@@ -4887,75 +3074,55 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
    <b><a href="#dom-filesystempermissionmode-read">#dom-filesystempermissionmode-read</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dom-filesystempermissionmode-read">2.2. Permissions</a> <a href="#ref-for-dom-filesystempermissionmode-read①">(2)</a>
-    <li><a href="#ref-for-dom-filesystempermissionmode-read②">2.3.2. The queryPermission() method</a>
-    <li><a href="#ref-for-dom-filesystempermissionmode-read③">2.3.3. The requestPermission() method</a>
-    <li><a href="#ref-for-dom-filesystempermissionmode-read④">2.4.1. The getFile() method</a>
-    <li><a href="#ref-for-dom-filesystempermissionmode-read⑤">2.5.1. Directory iteration</a> <a href="#ref-for-dom-filesystempermissionmode-read⑥">(2)</a>
-    <li><a href="#ref-for-dom-filesystempermissionmode-read⑦">2.5.2. The getFileHandle() method</a>
-    <li><a href="#ref-for-dom-filesystempermissionmode-read⑧">2.5.3. The getDirectoryHandle() method</a>
-    <li><a href="#ref-for-dom-filesystempermissionmode-read⑨">3.1. Local File System Permissions</a>
+    <li><a href="#ref-for-dom-filesystempermissionmode-read②">2.3.1. The queryPermission() method</a>
+    <li><a href="#ref-for-dom-filesystempermissionmode-read③">2.3.2. The requestPermission() method</a>
+    <li><a href="#ref-for-dom-filesystempermissionmode-read④">3.1. Local File System Permissions</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="dom-filesystempermissionmode-readwrite">
    <b><a href="#dom-filesystempermissionmode-readwrite">#dom-filesystempermissionmode-readwrite</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dom-filesystempermissionmode-readwrite">2.2. Permissions</a> <a href="#ref-for-dom-filesystempermissionmode-readwrite①">(2)</a>
-    <li><a href="#ref-for-dom-filesystempermissionmode-readwrite②">2.3.2. The queryPermission() method</a> <a href="#ref-for-dom-filesystempermissionmode-readwrite③">(2)</a>
-    <li><a href="#ref-for-dom-filesystempermissionmode-readwrite④">2.3.3. The requestPermission() method</a>
-    <li><a href="#ref-for-dom-filesystempermissionmode-readwrite⑤">2.4.2. The createWritable() method</a>
-    <li><a href="#ref-for-dom-filesystempermissionmode-readwrite⑥">2.5.2. The getFileHandle() method</a>
-    <li><a href="#ref-for-dom-filesystempermissionmode-readwrite⑦">2.5.3. The getDirectoryHandle() method</a>
-    <li><a href="#ref-for-dom-filesystempermissionmode-readwrite⑧">2.5.4. The removeEntry() method</a>
-    <li><a href="#ref-for-dom-filesystempermissionmode-readwrite⑨">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-dom-filesystempermissionmode-readwrite①⓪">(2)</a>
-    <li><a href="#ref-for-dom-filesystempermissionmode-readwrite①①">3.1. Local File System Permissions</a>
+    <li><a href="#ref-for-dom-filesystempermissionmode-readwrite②">2.3.1. The queryPermission() method</a> <a href="#ref-for-dom-filesystempermissionmode-readwrite③">(2)</a>
+    <li><a href="#ref-for-dom-filesystempermissionmode-readwrite④">2.3.2. The requestPermission() method</a>
+    <li><a href="#ref-for-dom-filesystempermissionmode-readwrite⑤">3.1. Local File System Permissions</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="dictdef-filesystempermissiondescriptor">
    <b><a href="#dictdef-filesystempermissiondescriptor">#dictdef-filesystempermissiondescriptor</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dictdef-filesystempermissiondescriptor">2.2. Permissions</a> <a href="#ref-for-dictdef-filesystempermissiondescriptor①">(2)</a> <a href="#ref-for-dictdef-filesystempermissiondescriptor②">(3)</a> <a href="#ref-for-dictdef-filesystempermissiondescriptor③">(4)</a> <a href="#ref-for-dictdef-filesystempermissiondescriptor④">(5)</a>
-    <li><a href="#ref-for-dictdef-filesystempermissiondescriptor⑤">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-dictdef-filesystempermissiondescriptor⑥">(2)</a>
-    <li><a href="#ref-for-dictdef-filesystempermissiondescriptor⑦">3.5. The showDirectoryPicker() method</a>
+    <li><a href="#ref-for-dictdef-filesystempermissiondescriptor⑤">3.5. The showDirectoryPicker() method</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="dom-filesystempermissiondescriptor-handle">
    <b><a href="#dom-filesystempermissiondescriptor-handle">#dom-filesystempermissiondescriptor-handle</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dom-filesystempermissiondescriptor-handle">2.2. Permissions</a> <a href="#ref-for-dom-filesystempermissiondescriptor-handle①">(2)</a> <a href="#ref-for-dom-filesystempermissiondescriptor-handle②">(3)</a> <a href="#ref-for-dom-filesystempermissiondescriptor-handle③">(4)</a> <a href="#ref-for-dom-filesystempermissiondescriptor-handle④">(5)</a> <a href="#ref-for-dom-filesystempermissiondescriptor-handle⑤">(6)</a>
-    <li><a href="#ref-for-dom-filesystempermissiondescriptor-handle⑥">2.3.2. The queryPermission() method</a> <a href="#ref-for-dom-filesystempermissiondescriptor-handle⑦">(2)</a>
-    <li><a href="#ref-for-dom-filesystempermissiondescriptor-handle⑧">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-dom-filesystempermissiondescriptor-handle⑨">(2)</a>
-    <li><a href="#ref-for-dom-filesystempermissiondescriptor-handle①⓪">3.1. Local File System Permissions</a> <a href="#ref-for-dom-filesystempermissiondescriptor-handle①①">(2)</a>
-    <li><a href="#ref-for-dom-filesystempermissiondescriptor-handle①②">3.5. The showDirectoryPicker() method</a>
+    <li><a href="#ref-for-dom-filesystempermissiondescriptor-handle⑥">2.3.1. The queryPermission() method</a> <a href="#ref-for-dom-filesystempermissiondescriptor-handle⑦">(2)</a>
+    <li><a href="#ref-for-dom-filesystempermissiondescriptor-handle⑧">3.1. Local File System Permissions</a> <a href="#ref-for-dom-filesystempermissiondescriptor-handle⑨">(2)</a>
+    <li><a href="#ref-for-dom-filesystempermissiondescriptor-handle①⓪">3.5. The showDirectoryPicker() method</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="dom-filesystempermissiondescriptor-mode">
    <b><a href="#dom-filesystempermissiondescriptor-mode">#dom-filesystempermissiondescriptor-mode</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dom-filesystempermissiondescriptor-mode">2.2. Permissions</a> <a href="#ref-for-dom-filesystempermissiondescriptor-mode①">(2)</a> <a href="#ref-for-dom-filesystempermissiondescriptor-mode②">(3)</a> <a href="#ref-for-dom-filesystempermissiondescriptor-mode③">(4)</a> <a href="#ref-for-dom-filesystempermissiondescriptor-mode④">(5)</a>
-    <li><a href="#ref-for-dom-filesystempermissiondescriptor-mode⑤">2.3.2. The queryPermission() method</a>
-    <li><a href="#ref-for-dom-filesystempermissiondescriptor-mode⑥">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-dom-filesystempermissiondescriptor-mode⑦">(2)</a>
-    <li><a href="#ref-for-dom-filesystempermissiondescriptor-mode⑧">3.1. Local File System Permissions</a> <a href="#ref-for-dom-filesystempermissiondescriptor-mode⑨">(2)</a>
-    <li><a href="#ref-for-dom-filesystempermissiondescriptor-mode①⓪">3.5. The showDirectoryPicker() method</a>
+    <li><a href="#ref-for-dom-filesystempermissiondescriptor-mode⑤">2.3.1. The queryPermission() method</a>
+    <li><a href="#ref-for-dom-filesystempermissiondescriptor-mode⑥">3.1. Local File System Permissions</a> <a href="#ref-for-dom-filesystempermissiondescriptor-mode⑦">(2)</a>
+    <li><a href="#ref-for-dom-filesystempermissiondescriptor-mode⑧">3.5. The showDirectoryPicker() method</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="querying-file-system-permission">
    <b><a href="#querying-file-system-permission">#querying-file-system-permission</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-querying-file-system-permission">2.3.2. The queryPermission() method</a>
-    <li><a href="#ref-for-querying-file-system-permission①">2.4.1. The getFile() method</a>
-    <li><a href="#ref-for-querying-file-system-permission②">2.5.1. Directory iteration</a> <a href="#ref-for-querying-file-system-permission③">(2)</a>
-    <li><a href="#ref-for-querying-file-system-permission④">2.5.2. The getFileHandle() method</a>
-    <li><a href="#ref-for-querying-file-system-permission⑤">2.5.3. The getDirectoryHandle() method</a>
+    <li><a href="#ref-for-querying-file-system-permission">2.3.1. The queryPermission() method</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="requesting-file-system-permission">
    <b><a href="#requesting-file-system-permission">#requesting-file-system-permission</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-requesting-file-system-permission">2.3.3. The requestPermission() method</a>
-    <li><a href="#ref-for-requesting-file-system-permission①">2.4.2. The createWritable() method</a>
-    <li><a href="#ref-for-requesting-file-system-permission②">2.5.2. The getFileHandle() method</a>
-    <li><a href="#ref-for-requesting-file-system-permission③">2.5.3. The getDirectoryHandle() method</a>
-    <li><a href="#ref-for-requesting-file-system-permission④">2.5.4. The removeEntry() method</a>
+    <li><a href="#ref-for-requesting-file-system-permission">2.3.2. The requestPermission() method</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="dictdef-filesystemhandlepermissiondescriptor">
@@ -4967,353 +3134,24 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
   <aside class="dfn-panel" data-for="dom-filesystemhandlepermissiondescriptor-mode">
    <b><a href="#dom-filesystemhandlepermissiondescriptor-mode">#dom-filesystemhandlepermissiondescriptor-mode</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-dom-filesystemhandlepermissiondescriptor-mode">2.3.2. The queryPermission() method</a> <a href="#ref-for-dom-filesystemhandlepermissiondescriptor-mode①">(2)</a> <a href="#ref-for-dom-filesystemhandlepermissiondescriptor-mode②">(3)</a>
-    <li><a href="#ref-for-dom-filesystemhandlepermissiondescriptor-mode③">2.3.3. The requestPermission() method</a> <a href="#ref-for-dom-filesystemhandlepermissiondescriptor-mode④">(2)</a> <a href="#ref-for-dom-filesystemhandlepermissiondescriptor-mode⑤">(3)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="enumdef-filesystemhandlekind">
-   <b><a href="#enumdef-filesystemhandlekind">#enumdef-filesystemhandlekind</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-enumdef-filesystemhandlekind">2.3. The FileSystemHandle interface</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dom-filesystemhandlekind-file">
-   <b><a href="#dom-filesystemhandlekind-file">#dom-filesystemhandlekind-file</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dom-filesystemhandlekind-file">2.3. The FileSystemHandle interface</a> <a href="#ref-for-dom-filesystemhandlekind-file①">(2)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dom-filesystemhandlekind-directory">
-   <b><a href="#dom-filesystemhandlekind-directory">#dom-filesystemhandlekind-directory</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dom-filesystemhandlekind-directory">2.3. The FileSystemHandle interface</a> <a href="#ref-for-dom-filesystemhandlekind-directory①">(2)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="filesystemhandle">
-   <b><a href="#filesystemhandle">#filesystemhandle</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-filesystemhandle">2.2. Permissions</a> <a href="#ref-for-filesystemhandle①">(2)</a> <a href="#ref-for-filesystemhandle②">(3)</a>
-    <li><a href="#ref-for-filesystemhandle③">2.3. The FileSystemHandle interface</a> <a href="#ref-for-filesystemhandle④">(2)</a> <a href="#ref-for-filesystemhandle⑤">(3)</a> <a href="#ref-for-filesystemhandle⑥">(4)</a> <a href="#ref-for-filesystemhandle⑦">(5)</a> <a href="#ref-for-filesystemhandle⑧">(6)</a>
-    <li><a href="#ref-for-filesystemhandle⑨">2.4. The FileSystemFileHandle interface</a> <a href="#ref-for-filesystemhandle①⓪">(2)</a>
-    <li><a href="#ref-for-filesystemhandle①①">2.5. The FileSystemDirectoryHandle interface</a> <a href="#ref-for-filesystemhandle①②">(2)</a> <a href="#ref-for-filesystemhandle①③">(3)</a> <a href="#ref-for-filesystemhandle①④">(4)</a>
-    <li><a href="#ref-for-filesystemhandle①⑤">3. Accessing Local File System</a>
-    <li><a href="#ref-for-filesystemhandle①⑥">3.2.2. Starting Directory</a>
-    <li><a href="#ref-for-filesystemhandle①⑦">3.6. Drag and Drop</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="filesystemhandle-entry">
-   <b><a href="#filesystemhandle-entry">#filesystemhandle-entry</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-filesystemhandle-entry">2.1. Concepts</a>
-    <li><a href="#ref-for-filesystemhandle-entry①">2.2. Permissions</a>
-    <li><a href="#ref-for-filesystemhandle-entry②">2.3. The FileSystemHandle interface</a> <a href="#ref-for-filesystemhandle-entry③">(2)</a> <a href="#ref-for-filesystemhandle-entry④">(3)</a> <a href="#ref-for-filesystemhandle-entry⑤">(4)</a>
-    <li><a href="#ref-for-filesystemhandle-entry⑥">2.3.1. The isSameEntry() method</a> <a href="#ref-for-filesystemhandle-entry⑦">(2)</a>
-    <li><a href="#ref-for-filesystemhandle-entry⑧">2.4. The FileSystemFileHandle interface</a>
-    <li><a href="#ref-for-filesystemhandle-entry⑨">2.4.1. The getFile() method</a>
-    <li><a href="#ref-for-filesystemhandle-entry①⓪">2.4.2. The createWritable() method</a>
-    <li><a href="#ref-for-filesystemhandle-entry①①">2.5. The FileSystemDirectoryHandle interface</a>
-    <li><a href="#ref-for-filesystemhandle-entry①②">2.5.1. Directory iteration</a>
-    <li><a href="#ref-for-filesystemhandle-entry①③">2.5.2. The getFileHandle() method</a> <a href="#ref-for-filesystemhandle-entry①④">(2)</a> <a href="#ref-for-filesystemhandle-entry①⑤">(3)</a>
-    <li><a href="#ref-for-filesystemhandle-entry①⑥">2.5.3. The getDirectoryHandle() method</a> <a href="#ref-for-filesystemhandle-entry①⑦">(2)</a> <a href="#ref-for-filesystemhandle-entry①⑧">(3)</a>
-    <li><a href="#ref-for-filesystemhandle-entry①⑨">2.5.4. The removeEntry() method</a>
-    <li><a href="#ref-for-filesystemhandle-entry②⓪">2.5.5. The resolve() method</a> <a href="#ref-for-filesystemhandle-entry②①">(2)</a>
-    <li><a href="#ref-for-filesystemhandle-entry②②">3.2.2. Starting Directory</a>
-    <li><a href="#ref-for-filesystemhandle-entry②③">4. Accessing the Origin Private File System</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dom-filesystemhandle-kind">
-   <b><a href="#dom-filesystemhandle-kind">#dom-filesystemhandle-kind</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dom-filesystemhandle-kind">2.3. The FileSystemHandle interface</a> <a href="#ref-for-dom-filesystemhandle-kind①">(2)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dom-filesystemhandle-name">
-   <b><a href="#dom-filesystemhandle-name">#dom-filesystemhandle-name</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dom-filesystemhandle-name">2.3. The FileSystemHandle interface</a> <a href="#ref-for-dom-filesystemhandle-name①">(2)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dom-filesystemhandle-issameentry">
-   <b><a href="#dom-filesystemhandle-issameentry">#dom-filesystemhandle-issameentry</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dom-filesystemhandle-issameentry">2.3. The FileSystemHandle interface</a>
-    <li><a href="#ref-for-dom-filesystemhandle-issameentry①">2.3.1. The isSameEntry() method</a> <a href="#ref-for-dom-filesystemhandle-issameentry②">(2)</a>
+    <li><a href="#ref-for-dom-filesystemhandlepermissiondescriptor-mode">2.3.1. The queryPermission() method</a> <a href="#ref-for-dom-filesystemhandlepermissiondescriptor-mode①">(2)</a> <a href="#ref-for-dom-filesystemhandlepermissiondescriptor-mode②">(3)</a>
+    <li><a href="#ref-for-dom-filesystemhandlepermissiondescriptor-mode③">2.3.2. The requestPermission() method</a> <a href="#ref-for-dom-filesystemhandlepermissiondescriptor-mode④">(2)</a> <a href="#ref-for-dom-filesystemhandlepermissiondescriptor-mode⑤">(3)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="dom-filesystemhandle-querypermission">
    <b><a href="#dom-filesystemhandle-querypermission">#dom-filesystemhandle-querypermission</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dom-filesystemhandle-querypermission">2.3. The FileSystemHandle interface</a>
-    <li><a href="#ref-for-dom-filesystemhandle-querypermission①">2.3.2. The queryPermission() method</a> <a href="#ref-for-dom-filesystemhandle-querypermission②">(2)</a> <a href="#ref-for-dom-filesystemhandle-querypermission③">(3)</a> <a href="#ref-for-dom-filesystemhandle-querypermission④">(4)</a>
+    <li><a href="#ref-for-dom-filesystemhandle-querypermission①">2.3.1. The queryPermission() method</a> <a href="#ref-for-dom-filesystemhandle-querypermission②">(2)</a> <a href="#ref-for-dom-filesystemhandle-querypermission③">(3)</a> <a href="#ref-for-dom-filesystemhandle-querypermission④">(4)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="dom-filesystemhandle-requestpermission">
    <b><a href="#dom-filesystemhandle-requestpermission">#dom-filesystemhandle-requestpermission</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dom-filesystemhandle-requestpermission">2.3. The FileSystemHandle interface</a>
-    <li><a href="#ref-for-dom-filesystemhandle-requestpermission①">2.3.2. The queryPermission() method</a> <a href="#ref-for-dom-filesystemhandle-requestpermission②">(2)</a>
-    <li><a href="#ref-for-dom-filesystemhandle-requestpermission③">2.3.3. The requestPermission() method</a> <a href="#ref-for-dom-filesystemhandle-requestpermission④">(2)</a> <a href="#ref-for-dom-filesystemhandle-requestpermission⑤">(3)</a> <a href="#ref-for-dom-filesystemhandle-requestpermission⑥">(4)</a>
-    <li><a href="#ref-for-dom-filesystemhandle-requestpermission⑦">6.3. First-party vs third-party contexts.</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dictdef-filesystemcreatewritableoptions">
-   <b><a href="#dictdef-filesystemcreatewritableoptions">#dictdef-filesystemcreatewritableoptions</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dictdef-filesystemcreatewritableoptions">2.4. The FileSystemFileHandle interface</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dom-filesystemcreatewritableoptions-keepexistingdata">
-   <b><a href="#dom-filesystemcreatewritableoptions-keepexistingdata">#dom-filesystemcreatewritableoptions-keepexistingdata</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dom-filesystemcreatewritableoptions-keepexistingdata">2.4.2. The createWritable() method</a> <a href="#ref-for-dom-filesystemcreatewritableoptions-keepexistingdata①">(2)</a> <a href="#ref-for-dom-filesystemcreatewritableoptions-keepexistingdata②">(3)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="filesystemfilehandle">
-   <b><a href="#filesystemfilehandle">#filesystemfilehandle</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-filesystemfilehandle">2.3. The FileSystemHandle interface</a>
-    <li><a href="#ref-for-filesystemfilehandle①">2.4. The FileSystemFileHandle interface</a> <a href="#ref-for-filesystemfilehandle②">(2)</a> <a href="#ref-for-filesystemfilehandle③">(3)</a>
-    <li><a href="#ref-for-filesystemfilehandle④">2.5. The FileSystemDirectoryHandle interface</a>
-    <li><a href="#ref-for-filesystemfilehandle⑤">2.5.1. Directory iteration</a>
-    <li><a href="#ref-for-filesystemfilehandle⑥">2.5.2. The getFileHandle() method</a> <a href="#ref-for-filesystemfilehandle⑦">(2)</a>
-    <li><a href="#ref-for-filesystemfilehandle⑧">3. Accessing Local File System</a> <a href="#ref-for-filesystemfilehandle⑨">(2)</a>
-    <li><a href="#ref-for-filesystemfilehandle①⓪">3.2.2. Starting Directory</a>
-    <li><a href="#ref-for-filesystemfilehandle①①">3.3. The showOpenFilePicker() method</a>
-    <li><a href="#ref-for-filesystemfilehandle①②">3.4. The showSaveFilePicker() method</a>
-    <li><a href="#ref-for-filesystemfilehandle①③">3.6. Drag and Drop</a> <a href="#ref-for-filesystemfilehandle①④">(2)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dom-filesystemfilehandle-getfile">
-   <b><a href="#dom-filesystemfilehandle-getfile">#dom-filesystemfilehandle-getfile</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dom-filesystemfilehandle-getfile">2.4. The FileSystemFileHandle interface</a>
-    <li><a href="#ref-for-dom-filesystemfilehandle-getfile①">2.4.1. The getFile() method</a> <a href="#ref-for-dom-filesystemfilehandle-getfile②">(2)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dom-filesystemfilehandle-createwritable">
-   <b><a href="#dom-filesystemfilehandle-createwritable">#dom-filesystemfilehandle-createwritable</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dom-filesystemfilehandle-createwritable">2.4. The FileSystemFileHandle interface</a>
-    <li><a href="#ref-for-dom-filesystemfilehandle-createwritable①">2.4.2. The createWritable() method</a> <a href="#ref-for-dom-filesystemfilehandle-createwritable②">(2)</a> <a href="#ref-for-dom-filesystemfilehandle-createwritable③">(3)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dictdef-filesystemgetfileoptions">
-   <b><a href="#dictdef-filesystemgetfileoptions">#dictdef-filesystemgetfileoptions</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dictdef-filesystemgetfileoptions">2.5. The FileSystemDirectoryHandle interface</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dom-filesystemgetfileoptions-create">
-   <b><a href="#dom-filesystemgetfileoptions-create">#dom-filesystemgetfileoptions-create</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dom-filesystemgetfileoptions-create">2.5.2. The getFileHandle() method</a> <a href="#ref-for-dom-filesystemgetfileoptions-create①">(2)</a> <a href="#ref-for-dom-filesystemgetfileoptions-create②">(3)</a> <a href="#ref-for-dom-filesystemgetfileoptions-create③">(4)</a> <a href="#ref-for-dom-filesystemgetfileoptions-create④">(5)</a>
-    <li><a href="#ref-for-dom-filesystemgetfileoptions-create⑤">2.5.3. The getDirectoryHandle() method</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dictdef-filesystemgetdirectoryoptions">
-   <b><a href="#dictdef-filesystemgetdirectoryoptions">#dictdef-filesystemgetdirectoryoptions</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dictdef-filesystemgetdirectoryoptions">2.5. The FileSystemDirectoryHandle interface</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dom-filesystemgetdirectoryoptions-create">
-   <b><a href="#dom-filesystemgetdirectoryoptions-create">#dom-filesystemgetdirectoryoptions-create</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dom-filesystemgetdirectoryoptions-create">2.5.3. The getDirectoryHandle() method</a> <a href="#ref-for-dom-filesystemgetdirectoryoptions-create①">(2)</a> <a href="#ref-for-dom-filesystemgetdirectoryoptions-create②">(3)</a> <a href="#ref-for-dom-filesystemgetdirectoryoptions-create③">(4)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dictdef-filesystemremoveoptions">
-   <b><a href="#dictdef-filesystemremoveoptions">#dictdef-filesystemremoveoptions</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dictdef-filesystemremoveoptions">2.5. The FileSystemDirectoryHandle interface</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dom-filesystemremoveoptions-recursive">
-   <b><a href="#dom-filesystemremoveoptions-recursive">#dom-filesystemremoveoptions-recursive</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dom-filesystemremoveoptions-recursive">2.5.4. The removeEntry() method</a> <a href="#ref-for-dom-filesystemremoveoptions-recursive①">(2)</a> <a href="#ref-for-dom-filesystemremoveoptions-recursive②">(3)</a> <a href="#ref-for-dom-filesystemremoveoptions-recursive③">(4)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="filesystemdirectoryhandle">
-   <b><a href="#filesystemdirectoryhandle">#filesystemdirectoryhandle</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-filesystemdirectoryhandle">2.3. The FileSystemHandle interface</a>
-    <li><a href="#ref-for-filesystemdirectoryhandle①">2.5. The FileSystemDirectoryHandle interface</a> <a href="#ref-for-filesystemdirectoryhandle②">(2)</a> <a href="#ref-for-filesystemdirectoryhandle③">(3)</a> <a href="#ref-for-filesystemdirectoryhandle④">(4)</a>
-    <li><a href="#ref-for-filesystemdirectoryhandle⑤">2.5.1. Directory iteration</a> <a href="#ref-for-filesystemdirectoryhandle⑥">(2)</a> <a href="#ref-for-filesystemdirectoryhandle⑦">(3)</a>
-    <li><a href="#ref-for-filesystemdirectoryhandle⑧">2.5.3. The getDirectoryHandle() method</a> <a href="#ref-for-filesystemdirectoryhandle⑨">(2)</a>
-    <li><a href="#ref-for-filesystemdirectoryhandle①⓪">3. Accessing Local File System</a>
-    <li><a href="#ref-for-filesystemdirectoryhandle①①">3.2.2. Starting Directory</a> <a href="#ref-for-filesystemdirectoryhandle①②">(2)</a>
-    <li><a href="#ref-for-filesystemdirectoryhandle①③">3.5. The showDirectoryPicker() method</a>
-    <li><a href="#ref-for-filesystemdirectoryhandle①④">3.6. Drag and Drop</a> <a href="#ref-for-filesystemdirectoryhandle①⑤">(2)</a>
-    <li><a href="#ref-for-filesystemdirectoryhandle①⑥">4. Accessing the Origin Private File System</a> <a href="#ref-for-filesystemdirectoryhandle①⑦">(2)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="filesystemdirectoryhandle-iterator-past-results">
-   <b><a href="#filesystemdirectoryhandle-iterator-past-results">#filesystemdirectoryhandle-iterator-past-results</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-filesystemdirectoryhandle-iterator-past-results">2.5.1. Directory iteration</a> <a href="#ref-for-filesystemdirectoryhandle-iterator-past-results①">(2)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dom-filesystemdirectoryhandle-getfilehandle">
-   <b><a href="#dom-filesystemdirectoryhandle-getfilehandle">#dom-filesystemdirectoryhandle-getfilehandle</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dom-filesystemdirectoryhandle-getfilehandle">2.5. The FileSystemDirectoryHandle interface</a>
-    <li><a href="#ref-for-dom-filesystemdirectoryhandle-getfilehandle①">2.5.2. The getFileHandle() method</a> <a href="#ref-for-dom-filesystemdirectoryhandle-getfilehandle②">(2)</a> <a href="#ref-for-dom-filesystemdirectoryhandle-getfilehandle③">(3)</a> <a href="#ref-for-dom-filesystemdirectoryhandle-getfilehandle④">(4)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dom-filesystemdirectoryhandle-getdirectoryhandle">
-   <b><a href="#dom-filesystemdirectoryhandle-getdirectoryhandle">#dom-filesystemdirectoryhandle-getdirectoryhandle</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dom-filesystemdirectoryhandle-getdirectoryhandle">2.5. The FileSystemDirectoryHandle interface</a>
-    <li><a href="#ref-for-dom-filesystemdirectoryhandle-getdirectoryhandle①">2.5.3. The getDirectoryHandle() method</a> <a href="#ref-for-dom-filesystemdirectoryhandle-getdirectoryhandle②">(2)</a> <a href="#ref-for-dom-filesystemdirectoryhandle-getdirectoryhandle③">(3)</a> <a href="#ref-for-dom-filesystemdirectoryhandle-getdirectoryhandle④">(4)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dom-filesystemdirectoryhandle-removeentry">
-   <b><a href="#dom-filesystemdirectoryhandle-removeentry">#dom-filesystemdirectoryhandle-removeentry</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dom-filesystemdirectoryhandle-removeentry">2.5. The FileSystemDirectoryHandle interface</a>
-    <li><a href="#ref-for-dom-filesystemdirectoryhandle-removeentry①">2.5.4. The removeEntry() method</a> <a href="#ref-for-dom-filesystemdirectoryhandle-removeentry②">(2)</a> <a href="#ref-for-dom-filesystemdirectoryhandle-removeentry③">(3)</a> <a href="#ref-for-dom-filesystemdirectoryhandle-removeentry④">(4)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dom-filesystemdirectoryhandle-resolve">
-   <b><a href="#dom-filesystemdirectoryhandle-resolve">#dom-filesystemdirectoryhandle-resolve</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dom-filesystemdirectoryhandle-resolve">2.5. The FileSystemDirectoryHandle interface</a>
-    <li><a href="#ref-for-dom-filesystemdirectoryhandle-resolve①">2.5.5. The resolve() method</a> <a href="#ref-for-dom-filesystemdirectoryhandle-resolve②">(2)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="enumdef-writecommandtype">
-   <b><a href="#enumdef-writecommandtype">#enumdef-writecommandtype</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-enumdef-writecommandtype">2.6. The FileSystemWritableFileStream interface</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dom-writecommandtype-write">
-   <b><a href="#dom-writecommandtype-write">#dom-writecommandtype-write</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dom-writecommandtype-write">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-dom-writecommandtype-write①">(2)</a>
-    <li><a href="#ref-for-dom-writecommandtype-write②">2.6.1. The write() method</a> <a href="#ref-for-dom-writecommandtype-write③">(2)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dom-writecommandtype-seek">
-   <b><a href="#dom-writecommandtype-seek">#dom-writecommandtype-seek</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dom-writecommandtype-seek">2.6. The FileSystemWritableFileStream interface</a>
-    <li><a href="#ref-for-dom-writecommandtype-seek①">2.6.1. The write() method</a>
-    <li><a href="#ref-for-dom-writecommandtype-seek②">2.6.2. The seek() method</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dom-writecommandtype-truncate">
-   <b><a href="#dom-writecommandtype-truncate">#dom-writecommandtype-truncate</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dom-writecommandtype-truncate">2.6. The FileSystemWritableFileStream interface</a>
-    <li><a href="#ref-for-dom-writecommandtype-truncate①">2.6.1. The write() method</a> <a href="#ref-for-dom-writecommandtype-truncate②">(2)</a>
-    <li><a href="#ref-for-dom-writecommandtype-truncate③">2.6.3. The truncate() method</a> <a href="#ref-for-dom-writecommandtype-truncate④">(2)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dictdef-writeparams">
-   <b><a href="#dictdef-writeparams">#dictdef-writeparams</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dictdef-writeparams">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-dictdef-writeparams①">(2)</a> <a href="#ref-for-dictdef-writeparams②">(3)</a> <a href="#ref-for-dictdef-writeparams③">(4)</a> <a href="#ref-for-dictdef-writeparams④">(5)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dom-writeparams-type">
-   <b><a href="#dom-writeparams-type">#dom-writeparams-type</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dom-writeparams-type">2.6. The FileSystemWritableFileStream interface</a>
-    <li><a href="#ref-for-dom-writeparams-type①">2.6.1. The write() method</a> <a href="#ref-for-dom-writeparams-type②">(2)</a> <a href="#ref-for-dom-writeparams-type③">(3)</a> <a href="#ref-for-dom-writeparams-type④">(4)</a>
-    <li><a href="#ref-for-dom-writeparams-type⑤">2.6.2. The seek() method</a>
-    <li><a href="#ref-for-dom-writeparams-type⑥">2.6.3. The truncate() method</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dom-writeparams-size">
-   <b><a href="#dom-writeparams-size">#dom-writeparams-size</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dom-writeparams-size">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-dom-writeparams-size①">(2)</a>
-    <li><a href="#ref-for-dom-writeparams-size②">2.6.1. The write() method</a>
-    <li><a href="#ref-for-dom-writeparams-size③">2.6.3. The truncate() method</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dom-writeparams-position">
-   <b><a href="#dom-writeparams-position">#dom-writeparams-position</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dom-writeparams-position">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-dom-writeparams-position①">(2)</a> <a href="#ref-for-dom-writeparams-position②">(3)</a> <a href="#ref-for-dom-writeparams-position③">(4)</a>
-    <li><a href="#ref-for-dom-writeparams-position④">2.6.1. The write() method</a> <a href="#ref-for-dom-writeparams-position⑤">(2)</a>
-    <li><a href="#ref-for-dom-writeparams-position⑥">2.6.2. The seek() method</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dom-writeparams-data">
-   <b><a href="#dom-writeparams-data">#dom-writeparams-data</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dom-writeparams-data">2.6. The FileSystemWritableFileStream interface</a>
-    <li><a href="#ref-for-dom-writeparams-data①">2.6.1. The write() method</a> <a href="#ref-for-dom-writeparams-data②">(2)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="typedefdef-filesystemwritechunktype">
-   <b><a href="#typedefdef-filesystemwritechunktype">#typedefdef-filesystemwritechunktype</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-typedefdef-filesystemwritechunktype">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-typedefdef-filesystemwritechunktype①">(2)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="filesystemwritablefilestream">
-   <b><a href="#filesystemwritablefilestream">#filesystemwritablefilestream</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-filesystemwritablefilestream">2.4. The FileSystemFileHandle interface</a>
-    <li><a href="#ref-for-filesystemwritablefilestream①">2.4.2. The createWritable() method</a>
-    <li><a href="#ref-for-filesystemwritablefilestream②">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-filesystemwritablefilestream③">(2)</a> <a href="#ref-for-filesystemwritablefilestream④">(3)</a> <a href="#ref-for-filesystemwritablefilestream⑤">(4)</a> <a href="#ref-for-filesystemwritablefilestream⑥">(5)</a> <a href="#ref-for-filesystemwritablefilestream⑦">(6)</a> <a href="#ref-for-filesystemwritablefilestream⑧">(7)</a> <a href="#ref-for-filesystemwritablefilestream⑨">(8)</a> <a href="#ref-for-filesystemwritablefilestream①⓪">(9)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="filesystemwritablefilestream-file">
-   <b><a href="#filesystemwritablefilestream-file">#filesystemwritablefilestream-file</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-filesystemwritablefilestream-file">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-filesystemwritablefilestream-file①">(2)</a> <a href="#ref-for-filesystemwritablefilestream-file②">(3)</a> <a href="#ref-for-filesystemwritablefilestream-file③">(4)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="filesystemwritablefilestream-buffer">
-   <b><a href="#filesystemwritablefilestream-buffer">#filesystemwritablefilestream-buffer</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-filesystemwritablefilestream-buffer">2.4.2. The createWritable() method</a>
-    <li><a href="#ref-for-filesystemwritablefilestream-buffer①">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-filesystemwritablefilestream-buffer②">(2)</a> <a href="#ref-for-filesystemwritablefilestream-buffer③">(3)</a> <a href="#ref-for-filesystemwritablefilestream-buffer④">(4)</a> <a href="#ref-for-filesystemwritablefilestream-buffer⑤">(5)</a> <a href="#ref-for-filesystemwritablefilestream-buffer⑥">(6)</a> <a href="#ref-for-filesystemwritablefilestream-buffer⑦">(7)</a> <a href="#ref-for-filesystemwritablefilestream-buffer⑧">(8)</a> <a href="#ref-for-filesystemwritablefilestream-buffer⑨">(9)</a> <a href="#ref-for-filesystemwritablefilestream-buffer①⓪">(10)</a> <a href="#ref-for-filesystemwritablefilestream-buffer①①">(11)</a> <a href="#ref-for-filesystemwritablefilestream-buffer①②">(12)</a> <a href="#ref-for-filesystemwritablefilestream-buffer①③">(13)</a> <a href="#ref-for-filesystemwritablefilestream-buffer①④">(14)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="filesystemwritablefilestream-seekoffset">
-   <b><a href="#filesystemwritablefilestream-seekoffset">#filesystemwritablefilestream-seekoffset</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-filesystemwritablefilestream-seekoffset">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-filesystemwritablefilestream-seekoffset①">(2)</a> <a href="#ref-for-filesystemwritablefilestream-seekoffset②">(3)</a> <a href="#ref-for-filesystemwritablefilestream-seekoffset③">(4)</a> <a href="#ref-for-filesystemwritablefilestream-seekoffset④">(5)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="create-a-new-filesystemwritablefilestream">
-   <b><a href="#create-a-new-filesystemwritablefilestream">#create-a-new-filesystemwritablefilestream</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-create-a-new-filesystemwritablefilestream">2.4.2. The createWritable() method</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="write-a-chunk">
-   <b><a href="#write-a-chunk">#write-a-chunk</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-write-a-chunk">2.6. The FileSystemWritableFileStream interface</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dom-filesystemwritablefilestream-write">
-   <b><a href="#dom-filesystemwritablefilestream-write">#dom-filesystemwritablefilestream-write</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dom-filesystemwritablefilestream-write">2.6. The FileSystemWritableFileStream interface</a> <a href="#ref-for-dom-filesystemwritablefilestream-write①">(2)</a>
-    <li><a href="#ref-for-dom-filesystemwritablefilestream-write②">2.6.1. The write() method</a> <a href="#ref-for-dom-filesystemwritablefilestream-write③">(2)</a> <a href="#ref-for-dom-filesystemwritablefilestream-write④">(3)</a> <a href="#ref-for-dom-filesystemwritablefilestream-write⑤">(4)</a> <a href="#ref-for-dom-filesystemwritablefilestream-write⑥">(5)</a> <a href="#ref-for-dom-filesystemwritablefilestream-write⑦">(6)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dom-filesystemwritablefilestream-seek">
-   <b><a href="#dom-filesystemwritablefilestream-seek">#dom-filesystemwritablefilestream-seek</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dom-filesystemwritablefilestream-seek">2.6. The FileSystemWritableFileStream interface</a>
-    <li><a href="#ref-for-dom-filesystemwritablefilestream-seek①">2.6.2. The seek() method</a> <a href="#ref-for-dom-filesystemwritablefilestream-seek②">(2)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dom-filesystemwritablefilestream-truncate">
-   <b><a href="#dom-filesystemwritablefilestream-truncate">#dom-filesystemwritablefilestream-truncate</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dom-filesystemwritablefilestream-truncate">2.6. The FileSystemWritableFileStream interface</a>
-    <li><a href="#ref-for-dom-filesystemwritablefilestream-truncate①">2.6.3. The truncate() method</a> <a href="#ref-for-dom-filesystemwritablefilestream-truncate②">(2)</a>
-    <li><a href="#ref-for-dom-filesystemwritablefilestream-truncate③">7.3. Filling up a users disk</a>
+    <li><a href="#ref-for-dom-filesystemhandle-requestpermission①">2.3.1. The queryPermission() method</a> <a href="#ref-for-dom-filesystemhandle-requestpermission②">(2)</a>
+    <li><a href="#ref-for-dom-filesystemhandle-requestpermission③">2.3.2. The requestPermission() method</a> <a href="#ref-for-dom-filesystemhandle-requestpermission④">(2)</a> <a href="#ref-for-dom-filesystemhandle-requestpermission⑤">(3)</a> <a href="#ref-for-dom-filesystemhandle-requestpermission⑥">(4)</a>
+    <li><a href="#ref-for-dom-filesystemhandle-requestpermission⑦">5.3. First-party vs third-party contexts.</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="typedefdef-startindirectory">
@@ -5429,11 +3267,10 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
   <aside class="dfn-panel" data-for="local-file-system-handle-factories">
    <b><a href="#local-file-system-handle-factories">#local-file-system-handle-factories</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-local-file-system-handle-factories">2.1. Concepts</a>
-    <li><a href="#ref-for-local-file-system-handle-factories①">2.3.2. The queryPermission() method</a>
-    <li><a href="#ref-for-local-file-system-handle-factories②">3.1. Local File System Permissions</a> <a href="#ref-for-local-file-system-handle-factories③">(2)</a>
-    <li><a href="#ref-for-local-file-system-handle-factories④">3.6. Drag and Drop</a>
-    <li><a href="#ref-for-local-file-system-handle-factories⑤">6.3. First-party vs third-party contexts.</a>
+    <li><a href="#ref-for-local-file-system-handle-factories">2.3.1. The queryPermission() method</a>
+    <li><a href="#ref-for-local-file-system-handle-factories①">3.1. Local File System Permissions</a> <a href="#ref-for-local-file-system-handle-factories②">(2)</a>
+    <li><a href="#ref-for-local-file-system-handle-factories③">3.6. Drag and Drop</a>
+    <li><a href="#ref-for-local-file-system-handle-factories④">5.3. First-party vs third-party contexts.</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="is-allowed-to-show-a-file-picker">
@@ -5565,14 +3402,6 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
     <li><a href="#ref-for-dom-datatransferitem-getasfilesystemhandle">3.6. Drag and Drop</a> <a href="#ref-for-dom-datatransferitem-getasfilesystemhandle①">(2)</a>
    </ul>
   </aside>
-  <aside class="dfn-panel" data-for="dom-storagemanager-getdirectory">
-   <b><a href="#dom-storagemanager-getdirectory">#dom-storagemanager-getdirectory</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dom-storagemanager-getdirectory">1. Introduction</a>
-    <li><a href="#ref-for-dom-storagemanager-getdirectory①">2.1. Concepts</a>
-    <li><a href="#ref-for-dom-storagemanager-getdirectory②">4. Accessing the Origin Private File System</a> <a href="#ref-for-dom-storagemanager-getdirectory③">(2)</a>
-   </ul>
-  </aside>
   <aside class="dfn-panel" data-for="wellknowndirectory-too-sensitive-or-dangerous">
    <b><a href="#wellknowndirectory-too-sensitive-or-dangerous">#wellknowndirectory-too-sensitive-or-dangerous</a></b><b>Referenced in:</b>
    <ul>
@@ -5582,12 +3411,6 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
     <li><a href="#ref-for-wellknowndirectory-too-sensitive-or-dangerous③">3.6. Drag and Drop</a>
    </ul>
   </aside>
-  <aside class="dfn-panel" data-for="wellknowndirectory-malware-scans-and-safe-browsing-checks">
-   <b><a href="#wellknowndirectory-malware-scans-and-safe-browsing-checks">#wellknowndirectory-malware-scans-and-safe-browsing-checks</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-wellknowndirectory-malware-scans-and-safe-browsing-checks">2.6. The FileSystemWritableFileStream interface</a>
-   </ul>
-  </aside>
 <script>/* script-dfn-panel */
 
 document.body.addEventListener("click", function(e) {