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Graphviz (DOT) templates

Biology — Dichotomous Key

Branching yes/no identification key.

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digraph Key {
  node [shape=box, style=rounded];
  "Has a backbone?" -> Vertebrate [label="yes"];
  "Has a backbone?" -> Invertebrate [label="no"];
  Vertebrate -> "Feathers -> Bird";
  Vertebrate -> "Fur -> Mammal";
  Invertebrate -> "Jointed legs -> Arthropod";
  Invertebrate -> "Soft body -> Mollusc";
}