FILE
	/usr/common/sys/mapd.c

NAME
	rooms_in_zone - return the rooms that comprise a zone

PROTOTYPE
	int *rooms_in_zone(int zone_number)

CALLED BY
	System, Common, Game

DESCRIPTION
	Every zone in Phantasmal has some number (perhaps even zero)
	rooms in it.  This function returns a list of room numbers
	for the specified zone.

RETURN VALUE
	An array of integer room numbers, or nil.

ERRORS
	Normally none.

SEE ALSO
	add_room_to_zone, rooms_in_segment, segments_in_zone, get_room_by_num