ksql-fig6.dot

digraph {
	graph [rankdir="TB"];
	bgcolor="transparent";

	rank="same";

	subgraph cluster_0a {
		rank="same";
		style="invis";
		subgraph cluster_0 {
			style="dotted";
			label="sandbox";
			step2 [label="ksql_alloc_child(3)"; color="red"];
			step2sub [label="output"; color="blue"];
			step2 -> step2sub;
			step2sub2 [label="input"; color="red"];
			step2sub2 -> step2;
		};
		base1 -> step2 [dir="both"];
		base1 [shape="point"; label=""];
	};

	subgraph cluster_1a {
		rank="same";
		style="invis";
		subgraph cluster_1 {
			style="dotted";
			label="sandbox";
			step1 [label="khttp_parse(3)"; color="red"];
			step1sub [label="input"; color="red"];
			step1sub -> step1;
		};
		base2 -> step1 [dir="both"];
		base2 [shape="point"; label=""];
	};

	subgraph cluster_2a {
		label="sandbox";
		style="dotted";
		base3 [label="work"];
		base4 [label="output"; color="blue"];
		base3 -> base4;
	};

	base0 [label="start"];

	base0 -> base2;
	base2 -> base1;
	base1 -> base3;
}