digraph TopLevel { compound = true bgcolor = lightcyan1 fontname = Arial fontsize = 8 label = "lib/engine/engine.rb" node [ fontname = Arial, fontsize = 8, color = black ] Engine [ fontcolor = black, URL = "classes/Engine.html", shape = ellipse, color = palegoldenrod, style = filled, label = "Engine" ] Singleton [ URL = "classes/Singleton.html", shape = box, label = "Singleton" ] Singleton -> Engine [ ] }