ill play a large role). <a href="#fig:analogy">Figure 1</a> depicts
the analogy between the STL and the BGL.
<p>&nbsp;</p>
<div align="CENTER">
  <a name="fig:analogy"></a><a name="752"></a>
  <table>
    <caption valign="bottom"><strong>Figure 1:</strong> The analogy between the
      STL and the BGL.</caption>
    <tr>
      <td><img src="figs/analogy.gif" width="518" height="335"></td>
    </tr>
  </table>
</div>
<p>&nbsp;</p>
The graph abstraction consists of a set of vertices (or nodes), and a set of
e