+//print :: (Action i f) [String] -> [String]
+//print (MoveToShip _ _) s = ["Move to ship":s]
+//print (MoveToQuay _ _) s = ["Move to quay":s]
+//print (MoveUp _ _) s = ["Move up":s]
+//print (MoveDown _ _) s = ["Move down":s]
+//print (Lock _ _) s = ["Lock":s]
+//print (Unlock _ _) s = ["Unlock":s]
+//print (Wait _) s = ["Wait":s]
+//print (a :. b) s = print a ["\n":print b s]
+//print (WhileContainerBelow _ a) s
+// = ["While container below (":indent ["\n":print a [")":s]]]
+//where
+// indent s = map (\s->if (s.[0] == '\n') (s +++ "\t") s)
+//
+
+print :: (Action i f) String [String] -> [String]
+print (MoveToShip _ _) i s = [i,"Move to ship":s]
+print (MoveToQuay _ _) i s = [i,"Move to quay":s]
+print (MoveUp _ _) i s = [i,"Move up":s]
+print (MoveDown _ _) i s = [i,"Move down":s]
+print (Lock _ _) i s = [i,"Lock":s]
+print (Unlock _ _) i s = [i,"Unlock":s]
+print (Wait _) i s = [i,"Wait":s]
+print (a :. b) i s = print a i ["\n":print b i s]
+print (WhileContainerBelow _ a) i s
+ = [i,"While container below (\n":print a ("\t"+++i) ["\n",i,")":s]]
+
+Start = print loadShip "" []
+
+p1 = moveToShip :. moveDown
+
+//p2 = moveToShip :. wait :. lock // the required type error
+
+loadShip =
+ whileContainerBelow (
+ moveDown:.
+ lock:.
+ moveUp:.
+ moveToShip:.
+ wait:.
+ moveDown:.
+ wait:.
+ unlock:.
+ moveUp:.
+ moveToQuay
+ ) :. wait