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| Next: <a href="Inserting-a-Backslash.html" accesskey="n" rel="next">Inserting ‘\’ with <code class="code">@backslashchar{}</code></a>, Previous: <a href="Inserting-Braces.html" accesskey="p" rel="prev">Inserting ‘{ ‘}’ with <code class="code">@{ @}</code> and <code class="code">@l rbracechar{}</code></a>, Up: <a href="Special-Characters.html" accesskey="u" rel="up">Special Characters: Inserting @ {} , \ # &</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Command-and-Variable-Index.html" title="Index" rel="index">Index</a>]</p> |
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| <h4 class="subsection" id="Inserting-_0060_002c_0027-with-_0040comma_007b_007d">11.1.3 Inserting ‘,’ with <code class="code">@comma{}</code></h4> |
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| <a class="index-entry-id" id="index-comma"></a> |
| <a class="index-entry-id" id="index-Comma_002c-inserting"></a> |
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| <p>Ordinarily, a comma ‘,’ is a normal character that can be simply typed |
| in your input where you need it. |
| </p> |
| <p>However, Texinfo uses the comma as a special character only in one |
| context: to separate arguments to those Texinfo commands, such as |
| <code class="code">@acronym</code> (see <a class="pxref" href="_0040acronym.html"><code class="code">@acronym</code>{<var class="var">acronym</var>[, <var class="var">meaning</var>]}</a>) and <code class="code">@xref</code> |
| (see <a class="pxref" href="Cross-References.html">Cross-references</a>), as well as user-defined macros |
| (see <a class="pxref" href="Defining-Macros.html">Defining Macros</a>), which take more than one argument. |
| </p> |
| <p>Since a comma character would confuse Texinfo’s parsing for these |
| commands, you must use the command ‘<samp class="samp">@comma{}</samp>’ instead if you want |
| to pass an actual comma. Here are some examples: |
| </p> |
| <div class="example"> |
| <pre class="example-preformatted">@acronym{ABC, A Bizarre @comma{}} |
| @xref{Comma,, The @comma{} symbol} |
| @mymac{One argument@comma{} containing a comma} |
| </pre></div> |
| |
| <p>Although ‘<samp class="samp">@comma{}</samp>’ can be used nearly anywhere, there is no |
| need for it anywhere except in this unusual case. |
| </p> |
| <p>(Incidentally, the name ‘<samp class="samp">@comma</samp>’ lacks the ‘<samp class="samp">char</samp>’ suffix used |
| in its companion commands only for historical reasons. It didn’t seem |
| important enough to define a synonym.) |
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