al_matches.html">Partial Matches</a></span></dt>
<dt><span class="section"><a href="boost_regex/syntax.html">Regular Expression Syntax</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="boost_regex/syntax/perl_syntax.html">Perl Regular Expression
      Syntax</a></span></dt>
<dt><span class="section"><a href="boost_regex/syntax/basic_extended.html">POSIX Extended Regular
      Expression Syntax</a></span></dt>
<dt><span class="section"><a href="boost_regex/syntax/basic_syntax.html">POSIX Basic Regu