new file mode 100644

@@ -0,0 +1,15 @@

+digraph G {

+	subgraph cluster_small {

+		a -> b;

+		label=small;

+	}

+

+	subgraph cluster_big {

+		p -> q -> r -> s -> t;

+		label=big;

+		t -> p;

+	}

+

+	t -> a;

+	b -> q;

+}