digraph G { node [shape = record]; /* In eckigen Klammern stehen die so gennanten "Ports" */ vater [ label =" | Vater | "]; sohn [ label =" | Sohn | "]; tochter [ label =" | Tochter | "]; "vater":mitte -> "sohn":links; "vater":mitte -> "tochter":rechts; }