(0:60) When a furre moves northeast,
   (1:18) and they (moved from/are standing at) object type #, - Stairs
   (1:5) and they successfully moved,
            (5:350) set variable %furpos to the X,Y position the triggering furre (moved from/is standing at).
            (5:352) move the position in variable %furpos northeast (up and right) 2 step(s).
            (5:355) move the position in variable %furpos northwest (up and left) 1 step(s).
            (5:14) move the triggering furre to (%furpos) if there's nobody already there.