[selectedTiles]	(array)
	[0]	(x)
		[0] = id	(y)
		[1] = id	(y)
		[2] = id	(y)
	[1]	(x)
		[0] = id	(y)
		[1] = id	(y)
		[2] = id	(y)
	xTileOffset
	yTileOffset
	width
	height
	image_pic
	
Internal array x,y refers to selection-relative tiles.
"id" refers to the linear index of tiles on the chipset, via wrap-around method.

The tile offsets are used to place the selection cursor on the chipset.

width and height are for intuitive convenience, so that the array lengths don't need to be measured.