&lt;!DOCTYPE funcsynopsis PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
          "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"&gt;
&lt;funcsynopsis&gt;
&lt;funcsynopsisinfo&gt;
#include &amp;lt;varargs.h&amp;gt;
&lt;/funcsynopsisinfo&gt;
&lt;funcprototype&gt;
  &lt;funcdef&gt;int &lt;function&gt;max&lt;/function&gt;&lt;/funcdef&gt;
  &lt;varargs/&gt;
&lt;/funcprototype&gt;
&lt;/funcsynopsis&gt;