tart"></a>
  <table>
    <caption valign="bottom"><strong>Figure 2:</strong> An example of a directed
      graph.</caption>
    <tr>
      <td><img src="figs/quick_start.gif" width="103" height="124"></td>
    </tr>
  </table>
</div>
<p>&nbsp;</p>
<p>In the following sections we will use the BGL to construct this example graph
and manipulate it in various ways. The complete source code for this example can
be found in <a href="../example/quick_tour.cpp"><tt>examples/quick_tour.cpp</tt></a>.
Each of the fol