<tt>g</tt> in the subgraph tree.  
    (Required by <a href="EdgeMutableGraph.html">EdgeMutableGraph</a>.)

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<pre>
void remove_edge(edge_descriptor e_local, subgraph&amp; g)
</pre>
    Removes the edge <tt>e</tt> from the subgraph and from all of the
    ancestors of <tt>g</tt> in the subgraph tree. 
    (Required by <a href="EdgeMutableGraph.html">EdgeMutableGraph</a>.)

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<pre>
vertex_descriptor
add_vertex(subgraph&amp; g)
</pre>
    Adds a vertex to the subgraph and returns the vertex descriptor
 