The done sign is placed on the map on a 'trigger tile' if that tile has a level number sprite on it. This is similar to the flag holders in Keen Galaxy.
#Tile that when under level icon triggers DONE sign %patch $4B59 [$5A]
Tiles used in sign
The done sign consists of four tiles; one of which is, by default, tile 0 or 'nothing'. The tiles are placed in a 2x2 square, just like the DONE markers in Keen Vorticons.
#Tiles used in DONE sign: %patch $4B53 [$0000W] #Clears 1,1 and 2,1 of level icon block %patch $4B75 [$0083W] #1,1 (DO) %patch $4B82 [$0084W] #2,1 (NE) %patch $4B67 [$0085W] #2,2 (Sign stick)