<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <!-- Created by GNU Texinfo 6.5, http://www.gnu.org/software/texinfo/ --> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>Block Comments (GNU Octave (version 5.1.0))</title> <meta name="description" content="Block Comments (GNU Octave (version 5.1.0))"> <meta name="keywords" content="Block Comments (GNU Octave (version 5.1.0))"> <meta name="resource-type" content="document"> <meta name="distribution" content="global"> <meta name="Generator" content="makeinfo"> <link href="index.html#Top" rel="start" title="Top"> <link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index"> <link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> <link href="Comments.html#Comments" rel="up" title="Comments"> <link href="Comments-and-the-Help-System.html#Comments-and-the-Help-System" rel="next" title="Comments and the Help System"> <link href="Single-Line-Comments.html#Single-Line-Comments" rel="prev" title="Single Line Comments"> <style type="text/css"> <!-- a.summary-letter {text-decoration: none} blockquote.indentedblock {margin-right: 0em} blockquote.smallindentedblock {margin-right: 0em; font-size: smaller} blockquote.smallquotation {font-size: smaller} div.display {margin-left: 3.2em} div.example {margin-left: 3.2em} div.lisp {margin-left: 3.2em} div.smalldisplay {margin-left: 3.2em} div.smallexample {margin-left: 3.2em} div.smalllisp {margin-left: 3.2em} kbd {font-style: oblique} pre.display {font-family: inherit} pre.format {font-family: inherit} pre.menu-comment {font-family: serif} pre.menu-preformatted {font-family: serif} pre.smalldisplay {font-family: inherit; font-size: smaller} pre.smallexample {font-size: smaller} pre.smallformat {font-family: inherit; font-size: smaller} pre.smalllisp {font-size: smaller} span.nolinebreak {white-space: nowrap} span.roman {font-family: initial; font-weight: normal} span.sansserif {font-family: sans-serif; font-weight: normal} ul.no-bullet {list-style: none} --> </style> <link rel="stylesheet" type="text/css" href="octave.css"> </head> <body lang="en"> <a name="Block-Comments"></a> <div class="header"> <p> Next: <a href="Comments-and-the-Help-System.html#Comments-and-the-Help-System" accesskey="n" rel="next">Comments and the Help System</a>, Previous: <a href="Single-Line-Comments.html#Single-Line-Comments" accesskey="p" rel="prev">Single Line Comments</a>, Up: <a href="Comments.html#Comments" accesskey="u" rel="up">Comments</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p> </div> <hr> <a name="Block-Comments-1"></a> <h4 class="subsection">2.7.2 Block Comments</h4> <a name="index-block-comments"></a> <a name="index-multi_002dline-comments"></a> <a name="index-_0023_007b-block-comment-marker"></a> <a name="index-_0025_007b-block-comment-marker"></a> <p>Entire blocks of code can be commented by enclosing the code between matching ‘<samp>#{</samp>’ and ‘<samp>#}</samp>’ or ‘<samp>%{</samp>’ and ‘<samp>%}</samp>’ markers. For example, </p> <div class="example"> <pre class="example">function quick_countdown # Count down for main rocket engines disp (3); #{ disp (2); disp (1); #} disp ("Blast Off!"); # Rocket leaves pad endfunction </pre></div> <p>will produce a very quick countdown from <code>'3'</code> to <code>"Blast Off"</code> as the lines "<code>disp (2);</code>" and "<code>disp (1);</code>" won’t be executed. </p> <p>The block comment markers must appear alone as the only characters on a line (excepting whitespace) in order to be parsed correctly. </p> </body> </html>