Graphvizでステートチャート図を書く。 図 Graphvizでステートチャート図 digraph sample { graph [fontname = "monospace", fontsize = 10, rankdir = TD, compound = true]; node [fontname = "monospace", fontsize = 10]; edge [fontname = "monospace", fontsize = 10]; // node node [shape = circle]; start [height = 0.3, width = 0.3, style = filled, fillcolor = black, label = ""]; end [height = 0.3, width = 0.3, style = filled, fillcolo