[Haskell] Using Haddock

Hi, I've been trying to get haddock to work, and have successfully produced some html files using: haddock -h Module.hs -o docs However, the files seem to contain no useful information at all, even if I comment the modules as so: --| Its a fucking module module MyModule where {-| The 'square' function squares an integer. It takes one argument, of type 'Int'. -} square :: Int -> Int square x = x * x (the square example taken from the haddock documentation). And still I get no more documentation than: Contents Index MyModule Synopsis Produced by Haddock version 0.6 What on earth is it trying to do? Bob