Try to draw graph image of graph.
Testing program to understand graphviz library.
Install pygraphviz.
Renameed to make more understandable.
Draw the graph. Now it is uncontrollable.
Make the graph viewable through a scrollable viewport.
Draw graph on a canvas.
Added submodule xdot.
Draw nodes of the graph as model identifiers.
Layout formatting. filter out hidden identifiers.
Include S0 and S_nonforest in the model parameter.