digraph G { 
	size="4,4"; 
	main [shape=box]; /* this is a comment */ 
	main -> parse [weight=8]; 
	parse -> execute; 
	main -> init [style=dotted]; 
	main -> cleanup; 
	execute -> { make_string; printf} 
	init -> make_string; 
	edge [color=red]; // so is this 
	main -> printf [style=bold,label="100 times"]; 
	make_string [label="make a\nstring"]; 
	node [shape=box,style=filled,color=".7 .3 1.0"]; 
	execute -> compare; 
}