||| A reasonable approximation of pi.
approx_pi : Rational
approx_pi = 22/7   -- an OK approximation

||| Take a natural number as input, and return the natural
||| number which is one greater.
|||
||| Should not be used while operating heavy machinery.
-- This comment will be ignored.
increment : N -> N
increment(n) = n + 1

fizz : N
fizz = 1