// TEST
digraph G {
	graph [rankdir=TD]
	world [label=world shape=rectangle]
	"world.pump" [label=pump shape=rectangle]
	"world.drive-mechanism" [label="drive-mechanism" shape=rectangle]
	"world.drive-mechanism.power-button" [label="power-button" shape=rectangle]
	"world.drive-mechanism.kill-switch" [label="kill-switch" shape=rectangle]
	"world.drive-mechanism.power-source" [label="power-source" shape=rectangle]
	"world.drive-mechanism.motor" [label=motor shape=rectangle]
	world -> "world.pump" [style=solid]
	world -> "world.drive-mechanism" [style=solid]
	"world.drive-mechanism" -> "world.drive-mechanism.power-button" [style=solid]
	"world.drive-mechanism" -> "world.drive-mechanism.kill-switch" [style=solid]
	"world.drive-mechanism" -> "world.drive-mechanism.power-source" [style=solid]
	"world.drive-mechanism" -> "world.drive-mechanism.motor" [style=solid]
}
