From e9fe9587e22b63b1488756e12892fb1edec76e3f Mon Sep 17 00:00:00 2001
From: Laurent HUET <laurent.huet@gmail.com>
Date: Mon, 30 Mar 2020 10:04:58 +0200
Subject: [PATCH 1/3] Add canvas `clog` function in the doc

---
 docs/canvas/canvas-function-reference.asciidoc | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/docs/canvas/canvas-function-reference.asciidoc b/docs/canvas/canvas-function-reference.asciidoc
index eaaf68eb06195..ed94253ff3d16 100644
--- a/docs/canvas/canvas-function-reference.asciidoc
+++ b/docs/canvas/canvas-function-reference.asciidoc
@@ -376,6 +376,17 @@ Clears the _context_, and returns `null`.
 *Returns:* `null`
 
 
+[float]
+[[clog_fn]]
+=== `clog`
+
+This function is for debug purpose. It outputs the _context_ in the console.
+
+*Accepts:* `any`
+
+*Returns:* `any`
+
+
 [float]
 [[columns_fn]]
 === `columns`

From 75f9a5d01ccf4ea7bfdaa9358f6859437a5f5f4a Mon Sep 17 00:00:00 2001
From: Laurent HUET <laurent.huet@gmail.com>
Date: Mon, 30 Mar 2020 15:30:58 +0200
Subject: [PATCH 2/3] Add basic example to the `clog` canvcas function

---
 .../canvas/canvas-function-reference.asciidoc | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/docs/canvas/canvas-function-reference.asciidoc b/docs/canvas/canvas-function-reference.asciidoc
index ed94253ff3d16..8f38b442c0a36 100644
--- a/docs/canvas/canvas-function-reference.asciidoc
+++ b/docs/canvas/canvas-function-reference.asciidoc
@@ -382,6 +382,26 @@ Clears the _context_, and returns `null`.
 
 This function is for debug purpose. It outputs the _context_ in the console.
 
+*Expression syntax*
+[source,js]
+----
+clog
+----
+
+*Code example*
+[source,text]
+----
+filters
+  | demodata
+  | clog 
+  | filterrows fn={getCell "age" | gt 70}
+  | clog 
+  | pointseries x="time" y="mean(price)"
+  | plot defaultStyle={seriesStyle lines=1 fill=1}
+  | render
+----
+This prints the `datatable` objects in the browser console before and after the `filterrows` function.
+
 *Accepts:* `any`
 
 *Returns:* `any`

From 2318a4bb464533f8cc17b66be55ecb0670ed2931 Mon Sep 17 00:00:00 2001
From: Laurent HUET <laurent.huet@gmail.com>
Date: Mon, 30 Mar 2020 15:34:06 +0200
Subject: [PATCH 3/3] clog canvas function: switch definition/purpose

---
 docs/canvas/canvas-function-reference.asciidoc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/canvas/canvas-function-reference.asciidoc b/docs/canvas/canvas-function-reference.asciidoc
index 8f38b442c0a36..67210c9d77057 100644
--- a/docs/canvas/canvas-function-reference.asciidoc
+++ b/docs/canvas/canvas-function-reference.asciidoc
@@ -380,7 +380,7 @@ Clears the _context_, and returns `null`.
 [[clog_fn]]
 === `clog`
 
-This function is for debug purpose. It outputs the _context_ in the console.
+It outputs the _context_ in the console. This function is for debug purpose.
 
 *Expression syntax*
 [source,js]