digraph {

  label = "Seppo.app: Whom will I notify / Whom am I blocking";
  labelloc = t;
  //rankdir = LR;

  start [shape=point];
  node  [shape=doublecircle]; accepted blocked;
  node  [shape=circle];

  start -> pending -> accepted -> blocked -> pending -> blocked;
  start -> blocked;
}

