new file mode 100644

@@ -0,0 +1,20 @@

+digraph G {

+	style=bold;

+	subgraph cluster_outer {

+		Act_1 -> Act_21;

+		Act_1 -> Act_23;

+		Act_25 -> Act_3;

+		subgraph cluster_inner {

+			label = "                          Act_2";

+			{Act_21 -> Act_22 [minlen=2]; rank=same;}

+			Act_22 -> Act_23;

+			Act_22 -> Act_24;

+			{Act_23 -> Act_24 [minlen=2]; rank=same;}

+			Act_23 -> Act_25;

+			Act_24 -> Act_25;

+		}

+	}

+	Ext_1 -> Act_1;

+	Act_3 -> Ext_2;

+	Ext_3 -> Act_24;

+}