ertex_descriptor vertex(vertices_size_type n, const subgraph&amp; g)
</pre>
    Returns the <i>n</i>th vertex in the subgraph's vertex list.

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<pre>
std::pair&lt;edge_descriptor, bool&gt;
edge(vertex_descriptor u_local, vertex_descriptor v_local, const subgraph&amp; g)
</pre>
    Returns the edge connecting vertex <i>u</i> to vertex <i>v</i> in subgraph <i>g</i>.
    (Required by <a href="AdjacencyMatrix.html">AdjacencyMatrix</a>.)



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<pre>
std::pair&lt;edge_descriptor, bool&gt;
add_edge(vertex_des