[Haskell-beginners] Using Iteratees to write to a file

Hello everyone, I've been reading "Iteratee: Teaching an Old Fold New Tricks" from the Monad Reader Issue 16 and am having a problem figuring out how to use the streamToFile function. Specifically, I can't figure out how to feed the Iteratee data to write to the file. If I run ghci> runIter $ streamToFile "/tmp/stream" Then the file is created but not populated with any data - which is natural since I didn't give it any data. I have no clue how to give it data though. I'd really appreciate it if someone could show me how to write "Hello world!" or something else equally mundane to get me going. I've been banging my head on this for hours now. Thanks, Rich