aux,1,0,,
aux,2,0,,
aux,3,0,,
aux,4,0,,
label,START,,,
if,fnc==0,START,,
label,JUDGE,,,
if,dir==0,FWD,REV,
label,FWD,,,
aux,1,0,,
aux,2,1,,
aux,3,0,,
aux,4,1,,
goto,WAITING,,,
label,REV,,,
aux,1,1,,
aux,2,0,,
aux,3,1,,
aux,4,0,,
label,WAITING,,,
wait,1000,,,
if,fnc==1,JUDGE,,
ret
,,,,
