rface to the <a class="reference external" href="../../../graph/index.html">Boost Graph library</a>'s
<a class="reference external" href="../../../graph/doc/depth_first_search.html"><tt class="docutils literal">depth_first_search</tt></a> algorithm.<a class="footnote-reference" href="#old-interface" id="id3"><sup>1</sup></a></p>
<!-- Revisit this

After laying some groundwork
and describing the algorithm's abstract interface, we'll show you
how to build a basic implementation with keyword support.  Then
we'