r</span></code>
        is returned.
      </p>
<p>
        See the <a class="link" href="../format.html" title="Search and Replace Format String Syntax">format syntax guide for more information</a>.
      </p>
<p>
        <span class="bold"><strong>Returns</strong></span>: out.
      </p>
<a name="boost_regex.match_results.format2"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">Formatter</spa