public void dump(PrintWriter pw) {
IdentityHashMap<Node,Node> done = new IdentityHashMap<Node,Node>();
- pw.println("digraph G { rankdir=LR; \n");
+ pw.println("digraph G { rankdir=LR; ordering=out; \n");
for(Group g : groups.values()) {
pw.println(" { rank=same;\n");
for(Node n : groups.keySet())