digraph G {
        graph [color=white,URL="default.html"]
	node [color=palegreen,style=filled,URL="\N.html"];
	edge [URL="edge.html"]

	a [shape=polygon,sides=5,peripheries=3]
	b
	c [shape=polygon,sides=4,skew=.4]
	d [shape=invtriangle]
	e [shape=polygon,sides=4,distortion=.7]

	a -> b -> c;
	b -> d;
}
