deferred class
	EV_MODEL_PROJECTOR

General
	cluster: interface
	description: "Viewers of EV_MODEL_WORLDs."
	keywords: "projector, world, figure"

Ancestors
	ANY

Queries
	world: EV_MODEL_WORLD

Commands
	set_world (a_world: [like world] EV_MODEL_WORLD)

Constraints
	world exists