/*
The command line is

  dot -Tps -Grankdir=LR states.dot > states.ps

and the file is:
*/
digraph states {
    size="3,2";
	rankdir=LR;
    node [shape=ellipse];
    empty [label = "Empty"];
    stolen [label = "Stolen"];
    waiting [label = "Waiting"];
    full [label = "Full"];
    empty -> full [label = "return"]
    empty -> stolen [label = "dispatch", wt=28]
    stolen -> full [label = "return"];
    stolen -> waiting [label = "touch"];
    waiting -> full [label = "return"];
  }