diff --git a/docs/LICENSE-text.html b/docs/LICENSE-text.html
index 61ec1e5..38fecc1 100644
--- a/docs/LICENSE-text.html
+++ b/docs/LICENSE-text.html
@@ -116,7 +116,7 @@ <h1>License</h1>
 
       <footer>
       <div class="copyright">
-  <p>Developed by YASUMOTO Atsushi.</p>
+  <p>Developed by Atsushi Yasumoto.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/docs/LICENSE.html b/docs/LICENSE.html
index 62a9220..b5ef9cc 100644
--- a/docs/LICENSE.html
+++ b/docs/LICENSE.html
@@ -120,7 +120,7 @@ <h1>MIT License</h1>
 
       <footer>
       <div class="copyright">
-  <p>Developed by YASUMOTO Atsushi.</p>
+  <p>Developed by Atsushi Yasumoto.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/docs/articles/felp.html b/docs/articles/felp.html
index 8045660..629ac83 100644
--- a/docs/articles/felp.html
+++ b/docs/articles/felp.html
@@ -119,22 +119,23 @@ <h1 class="hasAnchor">
 <h1 class="hasAnchor">
 <a href="#felpfunction" class="anchor"></a>felp(function)</h1>
 <div class="sourceCode" id="cb3"><pre class="sourceCode r"><code class="sourceCode r"><a class="sourceLine" id="cb3-1" title="1">felp?. <span class="co"># and `felp(felp)` return source and document of `felp` function</span></a></code></pre></div>
-<div class="sourceCode" id="cb4"><pre class="sourceCode text r"><code class="sourceCode r"><a class="sourceLine" id="cb4-1" title="1"><span class="cf">function</span> (topic, <span class="dt">package =</span> <span class="ot">NULL</span>, ...) </a>
-<a class="sourceLine" id="cb4-2" title="2">{</a>
-<a class="sourceLine" id="cb4-3" title="3">    <span class="cf">if</span> (<span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/missing">missing</a></span>(topic)) </a>
-<a class="sourceLine" id="cb4-4" title="4">        <span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/function">return</a></span>(<span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/do.call">do.call</a></span>(help, <span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/list">list</a></span>(<span class="dt">package =</span> <span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/substitute">substitute</a></span>(package), </a>
-<a class="sourceLine" id="cb4-5" title="5">            ...)))</a>
-<a class="sourceLine" id="cb4-6" title="6">    t &lt;-<span class="st"> </span><span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/rev">rev</a></span>(<span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/character">as.character</a></span>(<span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/substitute">substitute</a></span>(topic)))</a>
-<a class="sourceLine" id="cb4-7" title="7">    p &lt;-<span class="st"> </span><span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/c">c</a></span>(<span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/character">as.character</a></span>(<span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/substitute">substitute</a></span>(package)), t[2L])[1L]</a>
-<a class="sourceLine" id="cb4-8" title="8">    <span class="cf">if</span> (<span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/NA">is.na</a></span>(p)) </a>
-<a class="sourceLine" id="cb4-9" title="9">        p &lt;-<span class="st"> </span><span class="ot">NULL</span></a>
-<a class="sourceLine" id="cb4-10" title="10">    <span class="kw"><a href="https://www.rdocumentation.org/packages/utils/topics/str">str</a></span>(<span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/get">get</a></span>(t[1L], <span class="dt">envir =</span> <span class="cf">if</span> (<span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/NULL">is.null</a></span>(p)) </a>
-<a class="sourceLine" id="cb4-11" title="11">        <span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/sys.parent">parent.frame</a></span>()</a>
-<a class="sourceLine" id="cb4-12" title="12">    <span class="cf">else</span> <span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/ns-internal">asNamespace</a></span>(p)))</a>
-<a class="sourceLine" id="cb4-13" title="13">    <span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/try">try</a></span>(<span class="kw"><a href="https://www.rdocumentation.org/packages/utils/topics/help">help</a></span>(t[1L], p[1L], ...))</a>
-<a class="sourceLine" id="cb4-14" title="14">}</a>
-<a class="sourceLine" id="cb4-15" title="15"><span class="op">&lt;</span>bytecode<span class="op">:</span><span class="st"> </span><span class="dv">0x5634a419d558</span><span class="op">&gt;</span></a>
-<a class="sourceLine" id="cb4-16" title="16"><span class="er">&lt;</span>environment<span class="op">:</span><span class="st"> </span>namespace<span class="op">:</span>felp<span class="op">&gt;</span></a></code></pre></div>
+<div class="sourceCode" id="cb4"><pre class="sourceCode text r"><code class="sourceCode r"><a class="sourceLine" id="cb4-1" title="1"><span class="cf">function</span>(topic, <span class="dt">package =</span> <span class="ot">NULL</span>, ...) {</a>
+<a class="sourceLine" id="cb4-2" title="2">  <span class="co"># Display package document</span></a>
+<a class="sourceLine" id="cb4-3" title="3">  <span class="cf">if</span> (<span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/missing">missing</a></span>(topic)) <span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/function">return</a></span>(<span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/do.call">do.call</a></span>(help, <span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/list">list</a></span>(<span class="dt">package =</span> <span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/substitute">substitute</a></span>(package), ...)))</a>
+<a class="sourceLine" id="cb4-4" title="4"></a>
+<a class="sourceLine" id="cb4-5" title="5">  <span class="co"># Convert `package::name` to c("name", "package", "`::`") or `name` to "name"</span></a>
+<a class="sourceLine" id="cb4-6" title="6">  t &lt;-<span class="st"> </span><span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/rev">rev</a></span>(<span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/character">as.character</a></span>(<span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/substitute">substitute</a></span>(topic)))</a>
+<a class="sourceLine" id="cb4-7" title="7"></a>
+<a class="sourceLine" id="cb4-8" title="8">  p &lt;-<span class="st"> </span><span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/c">c</a></span>(<span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/character">as.character</a></span>(<span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/substitute">substitute</a></span>(package)), t[2L])[1L]</a>
+<a class="sourceLine" id="cb4-9" title="9">  <span class="cf">if</span> (<span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/NA">is.na</a></span>(p)) p &lt;-<span class="st"> </span><span class="ot">NULL</span></a>
+<a class="sourceLine" id="cb4-10" title="10"></a>
+<a class="sourceLine" id="cb4-11" title="11">  <span class="co"># Display structure and document of an object</span></a>
+<a class="sourceLine" id="cb4-12" title="12">  <span class="kw"><a href="https://www.rdocumentation.org/packages/utils/topics/str">str</a></span>(<span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/get">get</a></span>(t[1L], <span class="dt">envir =</span> <span class="st">`</span><span class="dt">if</span><span class="st">`</span>(<span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/NULL">is.null</a></span>(p), <span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/sys.parent">parent.frame</a></span>(), <span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/ns-internal">asNamespace</a></span>(p))))</a>
+<a class="sourceLine" id="cb4-13" title="13"></a>
+<a class="sourceLine" id="cb4-14" title="14">  <span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/try">try</a></span>(<span class="kw"><a href="https://www.rdocumentation.org/packages/utils/topics/help">help</a></span>(t[1L], p[1L], ...))</a>
+<a class="sourceLine" id="cb4-15" title="15">}</a>
+<a class="sourceLine" id="cb4-16" title="16"><span class="op">&lt;</span>bytecode<span class="op">:</span><span class="st"> </span><span class="dv">0x55b46942bbb0</span><span class="op">&gt;</span></a>
+<a class="sourceLine" id="cb4-17" title="17"><span class="er">&lt;</span>environment<span class="op">:</span><span class="st"> </span>namespace<span class="op">:</span>felp<span class="op">&gt;</span></a></code></pre></div>
 <div class="r-help-page">
 <table class="table"><tr>
 <td>
@@ -234,6 +235,21 @@ <h3>
 </td>
 </tr>
 </table>
+<h3>
+Examples
+</h3>
+<pre class="r">
+# Identical to help(identity); print(identity)
+felp(identity)
+
+# Identical to help(iris); str(iris)
+felp(iris)
+
+# Identical to help(package = MASS)
+felp(package = MASS)
+
+
+</pre>
 </div>
 </div>
 <div id="felpdataset" class="section level1">
@@ -283,44 +299,39 @@ <h1 class="hasAnchor">
 
 Description:
 
-Package:            felp
-Type:               Package
-Title:              Functional help for functions, objects, and
-                    packages
-Version:            0.2.0
-Author:             YASUMOTO Atsushi [aut, cph, cre]
-Authors@R:          c( person( given = "YASUMOTO Atsushi", role =
-                    c("aut", "cph", "cre"), email =
-                    "atusy7+felp@gmail.com", comment = c(ORCID =
-                    "0000-0002-8335-495X") ) )
-Maintainer:         YASUMOTO Atsushi &lt;atusy7+felp@gmail.com&gt;
-Description:        This package extends utils::`?` by
-                    pseudo-postfix operators `?.` for objects and
-                    `?p` for packages. For objects, a result of
-                    `str` or `print.function` is also displayed.
-URL:                https://github.com/atusy/felp
-BugReports:         https://github.com/atusy/felp/issues
-License:            MIT + file LICENSE
-Encoding:           UTF-8
-LazyData:           true
-Roxygen:            list(markdown = TRUE)
-RoxygenNote:        6.1.1
-Imports:            prettycode
-Suggests:           knitr, pkgdown, printr, rmarkdown, roxygen2
-VignetteBuilder:    knitr
-RemoteType:         github
-RemoteHost:         api.github.com
-RemoteRepo:         felp
-RemoteUsername:     atusy
-RemoteRef:          master
-RemoteSha:          dad4f6990cc1370f024fb563ebf80b5d3ad0da53
-GithubRepo:         felp
-GithubUsername:     atusy
-GithubRef:          master
-GithubSHA1:         dad4f6990cc1370f024fb563ebf80b5d3ad0da53
-NeedsCompilation:   no
-Packaged:           2019-06-08 07:43:12 UTC; root
-Built:              R 3.6.0; ; 2019-06-08 07:43:13 UTC; unix
+Package:           felp
+Type:              Package
+Title:             Functional Help for Functions, Objects, and
+                   Packages
+Version:           0.2.1
+Author:            Atsushi Yasumoto [aut, cph, cre]
+                   (&lt;https://orcid.org/0000-0002-8335-495X&gt;)
+Authors@R:         c( person( given = "Atsushi", family =
+                   "Yasumoto", role = c("aut", "cph", "cre"),
+                   email = "atusy.rpkg@gmail.com", comment =
+                   c(ORCID = "0000-0002-8335-495X") ) )
+Maintainer:        Atsushi Yasumto &lt;atusy.rpkg@gmail.com&gt;
+Description:       Provides postfix operators and more to enhance
+                   displaying documents.  The `?.` postfix
+                   operator and the `?` prefix operator displays
+                   documents and contents (source or structure) of
+                   objects simultaneously to help understanding
+                   the objects.  The `?p` postfix operator
+                   displays package documents, and is shorter than
+                   help(package = foo).
+URL:               https://github.com/atusy/felp
+BugReports:        https://github.com/atusy/felp/issues
+License:           MIT + file LICENSE
+Encoding:          UTF-8
+LazyData:          true
+Roxygen:           list(markdown = TRUE)
+RoxygenNote:       6.1.1
+Imports:           prettycode
+Suggests:          knitr, pkgdown, printr, rmarkdown, roxygen2,
+                   testthat (&gt;= 2.1.0), covr
+VignetteBuilder:   knitr
+Language:          en-US
+Built:             R 3.6.0; ; 2019-06-11 11:36:44 UTC; unix
 
 Index:
 
@@ -348,7 +359,7 @@ <h2 class="hasAnchor">
 
 
       <footer><div class="copyright">
-  <p>Developed by YASUMOTO Atsushi.</p>
+  <p>Developed by Atsushi Yasumoto.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/docs/articles/index.html b/docs/articles/index.html
index 77fadf5..fbe90b3 100644
--- a/docs/articles/index.html
+++ b/docs/articles/index.html
@@ -118,7 +118,7 @@ <h3>All vignettes</h3>
 
       <footer>
       <div class="copyright">
-  <p>Developed by YASUMOTO Atsushi.</p>
+  <p>Developed by Atsushi Yasumoto.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/docs/authors.html b/docs/authors.html
index 4754b7d..9118558 100644
--- a/docs/authors.html
+++ b/docs/authors.html
@@ -107,7 +107,7 @@ <h1>Authors</h1>
 
     <ul class="list-unstyled">
       <li>
-        <p><strong>YASUMOTO Atsushi</strong>. Author, copyright holder, maintainer. <a href='https://orcid.org/0000-0002-8335-495X' target='orcid.widget'><img src='https://members.orcid.org/sites/default/files/vector_iD_icon.svg' class='orcid' alt='ORCID' height='16'></a>
+        <p><strong>Atsushi Yasumoto</strong>. Author, copyright holder, maintainer. <a href='https://orcid.org/0000-0002-8335-495X' target='orcid.widget'><img src='https://members.orcid.org/sites/default/files/vector_iD_icon.svg' class='orcid' alt='ORCID' height='16'></a>
         </p>
       </li>
     </ul>
@@ -119,7 +119,7 @@ <h1>Authors</h1>
 
       <footer>
       <div class="copyright">
-  <p>Developed by YASUMOTO Atsushi.</p>
+  <p>Developed by Atsushi Yasumoto.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/docs/index.html b/docs/index.html
index 97f5fc0..7d995b8 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -10,7 +10,10 @@
 <script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha256-U5ZEeKfGNOja007MMD3YBI0A3OSZOQbeG6z2f2Y0hu8=" crossorigin="anonymous"></script><!-- Font Awesome icons --><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css" integrity="sha256-eZrrJcwDc/3uDhsdt61sL2oOBY362qM3lon1gyExkL0=" crossorigin="anonymous">
 <!-- clipboard.js --><script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.4/clipboard.min.js" integrity="sha256-FiZwavyI2V6+EXO1U+xzLG3IKldpiTFf3153ea9zikQ=" crossorigin="anonymous"></script><!-- sticky kit --><script src="https://cdnjs.cloudflare.com/ajax/libs/sticky-kit/1.1.3/sticky-kit.min.js" integrity="sha256-c4Rlo1ZozqTPE2RLuvbusY3+SU1pQaJC0TjuhygMipw=" crossorigin="anonymous"></script><!-- pkgdown --><link href="pkgdown.css" rel="stylesheet">
 <script src="pkgdown.js"></script><meta property="og:title" content="Functional Help for Functions, Objects, and Packages">
-<meta property="og:description" content="Display a document and a content (source or structure) of an object simultaneously by pseudo-postfix operator `?.`. Display a package document by pseudo-postfix operator `?p`.">
+<meta property="og:description" content="
+    Provides pseudo-postfix operators and more to enhance displaying documents.
+    The `?.` pseudo-postfix operator and the `?` prefix operator displays documents and contents (source or structure) of objects simultaneously to help understanding the objects.
+    The `?p` pseudo-postfix operator displays package documents, and is shorter than help(package = foo).">
 <meta name="twitter:card" content="summary">
 <!-- mathjax --><script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js" integrity="sha256-nvJJv9wWKEm88qvoQl9ekL2J+k/RWIsaSScxxlsrv8k=" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/config/TeX-AMS-MML_HTMLorMML.js" integrity="sha256-84DKXVJXs0/F8OTMzX4UR909+jtl4G7SPypPavF+GfA=" crossorigin="anonymous"></script><!--[if lt IE 9]>
 <script src="https://oss.maxcdn.com/html5shiv/3.7.3/html5shiv.min.js"></script>
@@ -132,7 +135,7 @@ <h2>License</h2>
 <div class="developers">
 <h2>Developers</h2>
 <ul class="list-unstyled">
-<li>YASUMOTO Atsushi <br><small class="roles"> Author, copyright holder, maintainer </small> <a href="https://orcid.org/0000-0002-8335-495X" target="orcid.widget"><img src="https://members.orcid.org/sites/default/files/vector_iD_icon.svg" class="orcid" alt="ORCID" height="16"></a> </li>
+<li>Atsushi Yasumoto <br><small class="roles"> Author, copyright holder, maintainer </small> <a href="https://orcid.org/0000-0002-8335-495X" target="orcid.widget"><img src="https://members.orcid.org/sites/default/files/vector_iD_icon.svg" class="orcid" alt="ORCID" height="16"></a> </li>
 </ul>
 </div>
 
@@ -148,7 +151,7 @@ <h2>Dev status</h2>
 </div>
 
       <footer><div class="copyright">
-  <p>Developed by YASUMOTO Atsushi.</p>
+  <p>Developed by Atsushi Yasumoto.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/docs/news/index.html b/docs/news/index.html
index 01f2957..4d86711 100644
--- a/docs/news/index.html
+++ b/docs/news/index.html
@@ -248,7 +248,7 @@ <h2>Contents</h2>
 
       <footer>
       <div class="copyright">
-  <p>Developed by YASUMOTO Atsushi.</p>
+  <p>Developed by Atsushi Yasumoto.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/docs/reference/dummy.html b/docs/reference/dummy.html
index 344d906..a969429 100644
--- a/docs/reference/dummy.html
+++ b/docs/reference/dummy.html
@@ -136,7 +136,7 @@ <h2>Contents</h2>
 
       <footer>
       <div class="copyright">
-  <p>Developed by YASUMOTO Atsushi.</p>
+  <p>Developed by Atsushi Yasumoto.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/docs/reference/felp.html b/docs/reference/felp.html
index f43ac16..a4f88cc 100644
--- a/docs/reference/felp.html
+++ b/docs/reference/felp.html
@@ -159,19 +159,35 @@ <h2 class="hasAnchor" id="arguments"><a class="anchor" href="#arguments"></a>Arg
     </table>
     
 
+    <h2 class="hasAnchor" id="examples"><a class="anchor" href="#examples"></a>Examples</h2>
+    <pre class="examples"><div class='input'><span class='co'># Identical to help(identity); print(identity)</span>
+<span class='fu'>felp</span>(<span class='no'>identity</span>)</div><div class='output co'>#&gt; <span style='color: #BB0000;'>function</span><span> (x) 
+#&gt; x
+#&gt; &lt;environment: namespace:base&gt;</div><div class='input'>
+<span class='co'># Identical to help(iris); str(iris)</span>
+<span class='fu'>felp</span>(<span class='no'>iris</span>)</div><div class='output co'>#&gt; 'data.frame':	150 obs. of  5 variables:
+#&gt;  $ Sepal.Length: num  5.1 4.9 4.7 4.6 5 5.4 4.6 5 4.4 4.9 ...
+#&gt;  $ Sepal.Width : num  3.5 3 3.2 3.1 3.6 3.9 3.4 3.4 2.9 3.1 ...
+#&gt;  $ Petal.Length: num  1.4 1.4 1.3 1.5 1.4 1.7 1.4 1.5 1.4 1.5 ...
+#&gt;  $ Petal.Width : num  0.2 0.2 0.2 0.2 0.2 0.4 0.3 0.2 0.2 0.1 ...
+#&gt;  $ Species     : Factor w/ 3 levels "setosa","versicolor",..: 1 1 1 1 1 1 1 1 1 1 ...</div><div class='input'>
+<span class='co'># Identical to help(package = MASS)</span>
+<span class='fu'>felp</span>(<span class='kw'>package</span> <span class='kw'>=</span> <span class='no'>MASS</span>)</div></span></pre>
   </div>
   <div class="col-md-3 hidden-xs hidden-sm" id="sidebar">
     <h2>Contents</h2>
     <ul class="nav nav-pills nav-stacked">
       <li><a href="#arguments">Arguments</a></li>
-                </ul>
+            
+      <li><a href="#examples">Examples</a></li>
+    </ul>
 
   </div>
 </div>
 
       <footer>
       <div class="copyright">
-  <p>Developed by YASUMOTO Atsushi.</p>
+  <p>Developed by Atsushi Yasumoto.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/docs/reference/index.html b/docs/reference/index.html
index b0ec5db..6e609fd 100644
--- a/docs/reference/index.html
+++ b/docs/reference/index.html
@@ -153,7 +153,7 @@ <h2>Contents</h2>
 
       <footer>
       <div class="copyright">
-  <p>Developed by YASUMOTO Atsushi.</p>
+  <p>Developed by Atsushi Yasumoto.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/docs/reference/question.html b/docs/reference/question.html
index 7f38d9f..c907b8c 100644
--- a/docs/reference/question.html
+++ b/docs/reference/question.html
@@ -140,19 +140,42 @@ <h2 class="hasAnchor" id="arguments"><a class="anchor" href="#arguments"></a>Arg
     </table>
     
 
+    <h2 class="hasAnchor" id="examples"><a class="anchor" href="#examples"></a>Examples</h2>
+    <pre class="examples"><div class='input'><span class='co'># Identical to help(identity); print(identity)</span>
+?<span class='no'>identity</span></div><div class='output co'>#&gt; <span style='color: #BB0000;'>function</span><span> (x) 
+#&gt; x
+#&gt; &lt;environment: namespace:base&gt;</div><div class='input'><span class='no'>identity</span>?<span class='no'>.</span>  <span class='co'># The same</span></div><div class='output co'>#&gt; </span><span style='color: #BB0000;'>function</span><span> (x) 
+#&gt; x
+#&gt; &lt;environment: namespace:base&gt;</div><div class='input'>
+<span class='co'># Identical to help(iris); str(iris)</span>
+?<span class='no'>iris</span></div><div class='output co'>#&gt; 'data.frame':	150 obs. of  5 variables:
+#&gt;  $ Sepal.Length: num  5.1 4.9 4.7 4.6 5 5.4 4.6 5 4.4 4.9 ...
+#&gt;  $ Sepal.Width : num  3.5 3 3.2 3.1 3.6 3.9 3.4 3.4 2.9 3.1 ...
+#&gt;  $ Petal.Length: num  1.4 1.4 1.3 1.5 1.4 1.7 1.4 1.5 1.4 1.5 ...
+#&gt;  $ Petal.Width : num  0.2 0.2 0.2 0.2 0.2 0.4 0.3 0.2 0.2 0.1 ...
+#&gt;  $ Species     : Factor w/ 3 levels "setosa","versicolor",..: 1 1 1 1 1 1 1 1 1 1 ...</div><div class='input'><span class='no'>iris</span>?<span class='no'>.</span>  <span class='co'># The same</span></div><div class='output co'>#&gt; 'data.frame':	150 obs. of  5 variables:
+#&gt;  $ Sepal.Length: num  5.1 4.9 4.7 4.6 5 5.4 4.6 5 4.4 4.9 ...
+#&gt;  $ Sepal.Width : num  3.5 3 3.2 3.1 3.6 3.9 3.4 3.4 2.9 3.1 ...
+#&gt;  $ Petal.Length: num  1.4 1.4 1.3 1.5 1.4 1.7 1.4 1.5 1.4 1.5 ...
+#&gt;  $ Petal.Width : num  0.2 0.2 0.2 0.2 0.2 0.4 0.3 0.2 0.2 0.1 ...
+#&gt;  $ Species     : Factor w/ 3 levels "setosa","versicolor",..: 1 1 1 1 1 1 1 1 1 1 ...</div><div class='input'>
+<span class='co'># Identical to help(package = MASS)</span>
+<span class='no'>MASS</span>?<span class='no'>p</span></div></span></pre>
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       <li><a href="#arguments">Arguments</a></li>
-                </ul>
+            
+      <li><a href="#examples">Examples</a></li>
+    </ul>
 
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-  <p>Developed by YASUMOTO Atsushi.</p>
+  <p>Developed by Atsushi Yasumoto.</p>
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