: (balance '*Tree1 (range 1 7)) -> NIL : (for N (5 4 6 3 7 1 2) (idx '*Tree2 N T)) -> NIL : (view *Tree1 T) 7 6 5 4 3 2 1 -> NIL : (view *Tree2 T) 7 6 5 4 3 2 1 -> NIL : (cmpTrees *Tree1 *Tree2) -> T