// mod_tex: distributed LaTeX-rendering over Apache
// Copyright (C) 2007 Peter Danenberg
// See doc/COPYING for details.
digraph G {

digraph G
{
  compound=true;
  subgraph cluster0
  {
    a -> b;
    a -> c;
    b -> d;
    c -> d;
  }
  subgraph cluster1
  {
    e -> g;
    e -> f;
  }
  b -> f [lhead=cluster1];
  d -> e;
  c -> g [ltail=cluster0, lhead=cluster1];
  c -> e [ltail=cluster0];
  d -> h;
}

}