if:spr==0 and :rz!=0 then goto2 else :spd=:rz :speed=:spd goto1 end
:spd=:rz :speed=:spd
:spd=:rz :speed=:spd
:speed=:spd if:spr==0 and :rz!=0 then goto5 else goto1 end
:spd="Error !!" :SA=0 :speed=:spd goto1