Superstructure class hierarchy

Building 3D content with a scene graph Superstructure class hierarchy

Universes and locales are superstructure classes for organizing content

Class Hierarchy

`java.lang.Object`
	`javax.media.j3d.VirtualUniverse`
	`javax.media.j3d.Locale`
	`javax.media.j3d.Node`
		`javax.media.j3d.Group`
			`javax.media.j3d.BranchGroup`