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<span id="Inserting-a-Comma"></span><div class="header">
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<span id="Inserting-_0060_002c_0027-with-_0040comma_007b_007d"></span><h4 class="subsection">12.1.3 Inserting ‘,’ with <code>@comma{}</code></h4>
<span id="index-comma"></span>
<span id="index-Comma_002c-inserting"></span>
<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>@acronym</code> (see <a href="_0040acronym.html"><code>@acronym</code></a>) and <code>@xref</code>
(see <a href="Cross-References.html">Cross References</a>), as well as user-defined macros
(see <a 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>@comma{}</samp>’ instead if you want
to pass an actual comma. Here are some examples:
</p>
<div class="example">
<pre class="example">@acronym{ABC, A Bizarre @comma{}}
@xref{Comma,, The @comma{} symbol}
@mymac{One argument@comma{} containing a comma}
</pre></div>
<p>Although ‘<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>@comma</samp>’ lacks the ‘<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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