+$ cat test.dot
+> graph test {
+> graph [overlap=scale]
+> node [shape=box, style=filled]
+> node [width=.3, height=.3, style=filled, color=skyblue]
+>
+> "bob0.hamburger.edu";
+> "bob2.hamburger.edu";
+> "bob3.hamburger.edu";
+> "bob4.hamburger.edu";
+> "bob6.hamburger.edu";
+> "bob_cluster";
+> "bob_cluster_backbone";
+> "bob_cluster_link_0_DOWN";
+> "bob_cluster_link_0_UP";
+> "bob_cluster_link_2_DOWN";
+> "bob_cluster_link_2_UP";
+> "bob_cluster_link_3_DOWN";
+> "bob_cluster_link_3_UP";
+> "bob_cluster_link_4_DOWN";
+> "bob_cluster_link_4_UP";
+> "bob_cluster_link_6_DOWN";
+> "bob_cluster_link_6_UP";
+> "bobbob_cluster_router.hamburger.edu";
+> "bob_cluster_link_0_DOWN" -- "bob_cluster_backbone";
+> "bob_cluster_link_0_UP" -- "bob_cluster_backbone";
+> "bob_cluster_link_2_DOWN" -- "bob_cluster_backbone";
+> "bob_cluster_link_2_UP" -- "bob_cluster_backbone";
+> "bob_cluster_link_3_DOWN" -- "bob_cluster_backbone";
+> "bob_cluster_link_3_UP" -- "bob_cluster_backbone";
+> "bob_cluster_link_4_DOWN" -- "bob_cluster_backbone";
+> "bob_cluster_link_4_UP" -- "bob_cluster_backbone";
+> "bob_cluster_link_6_DOWN" -- "bob_cluster_backbone";
+> "bob_cluster_link_6_UP" -- "bob_cluster_backbone";
+> "bob0.hamburger.edu" -- "bob_cluster_link_0_DOWN";
+> "bob0.hamburger.edu" -- "bob_cluster_link_0_UP";
+> "bob2.hamburger.edu" -- "bob_cluster_link_2_DOWN";
+> "bob2.hamburger.edu" -- "bob_cluster_link_2_UP";
+> "bob3.hamburger.edu" -- "bob_cluster_link_3_DOWN";
+> "bob3.hamburger.edu" -- "bob_cluster_link_3_UP";
+> "bob4.hamburger.edu" -- "bob_cluster_link_4_DOWN";
+> "bob4.hamburger.edu" -- "bob_cluster_link_4_UP";
+> "bob6.hamburger.edu" -- "bob_cluster_link_6_DOWN";
+> "bob6.hamburger.edu" -- "bob_cluster_link_6_UP";
+> "bob_cluster_backbone" -- "bob_cluster";
+> "bobbob_cluster_router.hamburger.edu" -- "bob_cluster";
+> }