index1.dot

digraph {
	a1 -> t1 -> r1;
	a2 -> t2 -> r2;
	a3 -> t3 -> r3;
	a1[label="article1.xml"];
	a2[label="article2.xml"];
	a3[label="article3.xml"];
	subgraph cluster0 {
		color="#888888";
		t1[label="template.html"];
		t2[label="template.html"];
		t3[label="template.html"];
	}
	r1[label="result1.html"];
	r2[label="result2.html"];
	r3[label="result3.html"];
}