(0:15) When a furre uses the get/drop command,
   (1:19) and the triggering furre (moved from/is standing at) position (22,20),
            (5:317) set variable %picked_up to the number of the object in the triggering furre's paws.
      (3:5) where the triggering furre moved from,
            (5:4) place object type %picked_up.


(0:7) When somebody moves into position (24,19),
(3:2) at position (22,20) on the map,
(5:400) cycle the three object types in this sequence one step forward: 5, 6, 7, 8, 1.