Graph.html#sec:vertices"><tt>vertices()</tt></a>
function of the <a href="VertexListGraph.html">VertexListGraph</a> interface.
This function returns a <tt>std::pair</tt> of <i>vertex iterators</i> (the <tt>first</tt>
iterator points to the &quot;beginning&quot; of the vertices and the <tt>second</tt>
iterator points &quot;past the end&quot;). Dereferencing a vertex iterator gives
a vertex object. The type of the vertex iterator is given by the <a href="graph_traits.html"><tt>graph_traits</tt></a>
class. Not