1 digraph DefaultOpenContent {

     2   mindist = 2.0

     3   1 -> 2 [label="annotation"]

     4   1 -> 3 [label="any"]

     5   2 -> 3 [label="any"]

     6   1 [shape=doublecircle, style=filled, color=blue]

     7   2 [shape=circle, style=filled, color=red]

     8   3 [shape=doublecircle, style=filled, color=green]

     9 }