Atic Atac: Data at ABE9

ABE9: Which corners to join up, for shape $05, $06, $07, $08

Groups of vertex numbers, each closed by an $FF, and a second $FF ends the list. DRAW_OUTLINE draws from the first number in a group to each of the others in turn. Shared by 4 shapes, which is how a room and its mirror image are drawn from one description. Nothing in ROOM_TABLE uses shape $06, $07. That is not the same as never drawn -- the table's last entry is the trapdoor fall rather than a room -- but for these there is no entry at all.
SHAPE_EDGES_05	ABE9	DEFB $01,$FF,$02,$03,$01,$FF,$03,$FF
	ABF1	DEFB $04,$01,$03,$FF,$05,$01,$FF,$06
	ABF9	DEFB $23,$05,$FF,$07,$FF,$08,$21,$07
	AC01	DEFB $FF,$09,$FF,$0A,$1F,$09,$FF,$0B
	AC09	DEFB $FF,$0C,$1D,$0B,$FF,$0D,$FF,$0E
	AC11	DEFB $1B,$0D,$FF,$0F,$FF,$10,$19,$0F
	AC19	DEFB $FF,$11,$FF,$12,$17,$11,$02,$FF
	AC21	DEFB $17,$03,$FF,$18,$17,$FF,$19,$FF
	AC29	DEFB $1A,$19,$FF,$1B,$FF,$1C,$1B,$FF
	AC31	DEFB $1D,$FF,$1E,$1D,$FF,$1F,$FF,$20
	AC39	DEFB $1F,$FF,$21,$FF,$22,$21,$FF,$23
	AC41	DEFB $FF,$24,$04,$05,$23,$FF,$25,$FF
	AC49	DEFB $FF