digraph structs {
  node [shape=Mrecord];
  1 [label="<name> \"Hello world\""];
  2 [label="<name> *string"];
  2:name -> 1:name;
  3 [label="<name> **string"];
  3:name -> 2:name;
  4 [label="<name> ***string"];
  4:name -> 3:name;
}

