I'd like to attach the User's Guide to Help/Contents, though we could also offer the old User Manual (hugs98.chm) lower down the menu as a backup.
I'm unsure what the different between the User Guide and User Manual are, is one just a newer version? Its probably best to just put the latest one under Help/Contents, or you start to confuse people - the last thing you want is to have to find help to find how to find help!
Links to the Haskell 98 Report and the Hierarchical Libraries (at http://www.haskell.org/ghc/docs/6.4-latest/html/libraries/index.html) might also be useful.
Libraries I would say yes. Haskell Report is a bit too dense for most people who are learning, and those who aren't can find it themselves from Haskell.org - its rare to read the report. Does Hugs tend to ship with documentation on the libraries installed? Thanks Neil