_ empty space space internally used as empty, but not good in files A start H home(level exit) I blue ammunition J green Balltrigger K red Balltrigger L pushable block, like in sokoban, initialed(branded) M Solid metal bluish X N Solid reddish masonry wall O Solid grey stone X centerstone P Sirene; triggered by any ball Z Kegel, up, destructible ] Kegel, down, destructible g wall, green C wall, red Birds R looking left S up T right U down additional graphics: - bullet - attacking bird - laser by siren(rook) Old huelsi LVLs can be turned into maps by wrapping them in a few lines of javascript.