jrtechs-vis/examples/network/data/dotLanguage/data/simple.gv.txt

digraph {
  node [shape=circle fontsize=16]
  edge [length=100, color=gray, fontcolor=black]

  A -> A[label=0.5];
  B -> B[label=1.2] -> C[label=0.7] -- A;
  B -> D;
  D -> {B; C}
  D -> E[label=0.2];
  F -> F;
  A [
    fontcolor=white,
    color=red,
  ]
}