code: def _cmp_bystrlen_reverse(a, b):
      
      if len(a) > len(b):
          return -1
      elif len(a) < len(b):
          return 1
      else:
          return 0
docs: A private "cmp" function to be used by the "sort" function of a
         list when ordering the titles found in a knowledge base by string-
         length - LONGEST -> SHORTEST.
         @param a: (string)
         @param b: (string)
         @return: (integer) - 0 if len(a) == len(b); 1 if len(a) < len(b);
          -1 if len(a) > len(b);