SYNOPSIS
	object *all_environment()
	object *all_environment(object o)

DESCRIPTION
	Returns an array with all environments object <o> is in. If <o> is
	omitted, the environments of the current object is returned.

	If <o> has no environment, or if <o> is destructed, 0 is returned.

EXAMPLE
	If o is a match in a matchbox which is in a box in a chest,
	in a room, all_environment(o) will return
        ({ matchbox, box, chest, room }).

HISTORY
	Introduced in LDMud 3.2.6, suggested by TubMud.

SEE ALSO
	environment(E), all_inventory(E)
