o To output anything, I need to do 'do'.
If you only have one action, you can omit do, e.g.
main = do { putStrLn "Hello, World!" }
is identical (after de-sguaring) to
main = putStrLn "Hello, World!"
Essentially, you are correct; to output anything (i.e. to perform I/O
by side effect) your actions will be inside the I/O monad, typically
inside of a 'do' block.
Jared.
--
http://www.updike.org/~jared/
reverse ")-:"
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