digraph {
	node[shape="box"]
	committer[label="Committer"];
	spec_committer[label="Specification\nCommitter"];
	contributor[label="Contributor"];

	participant[label="Working Group\nParticipant"];
	
	node[shape="note";fontsize=12]
	eca;
	ica;
	mcca;
	efma;
	wgpa;
	
	node[shape="diamond"; ]
	participant_both[label="both"];
	spec_committer_both[label="both"];
	contributor_oneof[label="one of"];

	edge[fontsize=8]
	committer -> ica[label="individual"];
	committer -> mcca[label="employed\nby member"];
	mcca -> efma;

	contributor -> contributor_oneof;
	contributor_oneof -> eca[label="individual"];
	contributor_oneof -> ica[label="already\ncommitter"];
	contributor_oneof -> mcca[label="employed\nby member"];
		
	participant -> participant_both;
	participant_both -> efma;
	participant_both -> wgpa;
	
	spec_committer -> spec_committer_both;
	spec_committer_both -> participant[label="works\nfor"]
	spec_committer_both ->  committer;
}