text: def super_sum(a, b, c):
      #dg START FUNC
      #dg BRIEF returns the sum of THREE numbers!!!
      #dg START ARGS
      #   (int float) a: first number.
      #   (int float) b: second number.
      #   (int float) b: third number.
      #dg END ARGS
      #dg RETURNS int float
      #dg END FUNC
      return a + b + c