[Boost-users] BGL: Write graphviz file with invisible edges

I found out that if you write a graph (.dot) file like this: graph G { 0; 1; 2; 0--1; 1--2 [style=invis]; } graphviz will layout the graph as if it has two edges (0--1, and 1--2), but not display the edge between vertices 1 and 2. This is useful when trying to keep the vertices stationary and show changes to the connectivity. How would I setup the graph in BGL so I could mark particular edges so they will be written with [style=invis]? Thanks, David