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	<title>BOOST_PP_COMMA</title>
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		The <b>BOOST_PP_COMMA</b> macro expands to a comma.
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	<h4>Usage</h4>
		<div class="code">
			<b>BOOST_PP_COMMA</b>()
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	<h4>Remarks</h4>
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			The preprocessor interprets commas as argument separators in macro invocations.&nbsp;
			Because of this, commas require special handling.
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	<h4>Requirements</h4>
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			<b>Header:</b> &nbsp;<a href="../headers/punctuation/comma.html">&lt;boost/preprocessor/punctuation/comma.hpp&gt;</a>
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	<h4>Sample Code</h4>
<div><pre>
#include &lt;<a href="../headers/control/if.html">boost/preprocessor/control/if.hpp</a>&gt;
#include &lt;<a href="../headers/facilities/empty.html">boost/preprocessor/facilities/empty.hpp</a>&gt;
#include &lt;<a href="../headers/punctuation/comma.html">boost/preprocessor/punctuation/comma.hpp</a>&gt;

<a href="if.html">BOOST_PP_IF</a>(1, <a href="comma.html">BOOST_PP_COMMA</a>, <a href="empty.html">BOOST_PP_EMPTY</a>)() // expands to ,
</pre></div>
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	<div style="margin-left: 0px;">
		<i>© Copyright <a href="http://www.housemarque.com" target="_top">Housemarque Oy</a> 2002</i>
		</br><i>© Copyright Paul Mensonides 2002</i>
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	<div style="margin-left: 0px;">
		<p><small>Distributed under the Boost Software License, Version 1.0. (See
		accompanying file <a href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or
		copy at <a href=
		"http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p>
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