digraph G {
	subgraph clusterSurround1 {

		subgraph cluster1 {
			graph [color=purple]
			x1 -> y1
			x1 -> z1
		}
		subgraph cluster2 {
			graph [color=pink]
			x2 -> y2
			x2 -> z2
			subgraph cluster2a {
				graph [color=blue  label=C2 boss=worker]
				x21 ->x22
			}
		}
		q0 -> x2;
		z2 -> x1
	}
	graph [label="My Cool Graph" fontcolor=red id=boss]  //  this line will be repositioned
}
