digraph HHTest {
	node [color="#b20000" fontcolor="#ffffff" shape=ellipse style=filled]
	hhPop [label=<hhPop<br/><i>1 cell</i>>]
	node [color="#444444" fontcolor="#444444" style=""]
	stim [label=<stim<br/><i>1 input</i>>]
	stim -> hhPop [arrowhead=empty]
}