Question

Can Graphviz render State Transition Diagrams exactly like this?

http://upload.wikimedia.org/wikipedia/commons/c/cf/Finite_state_machine_example_with_comments.svg

=== Edit ===

Marapet’s code comes really close (see: https://i.stack.imgur.com/IorMH.png ). I am accepting his answer.

Answer 1

I’d create nodes for the transition conditions :

digraph g{
  Opened[label="1\nOpened\nE: open door"];
  Closed[label="2\nClosed\nE: closed door"];
  node[shape=plaintext];

  Opened -> close_door[arrowhead=none];
  close_door -> Closed;
  Opened -> open_door[dir=back];
  open_door -> Closed[arrowhead=none];
}