| I'm a little puzzled by these seeming duplicate pages in the | manual: | | http://www.haskell.org/ghc/dist/current/docs/users_guide/type-extensions.htm... | | http://www.haskell.org/ghc/dist/current/docs/users_guide/data-type- | extensions.html The former is garbage. It's part of an *earlier* iteration of the HEAD user manual, left around by mistake. | They give slightly different section numbers to similar stuff. | The former page also has a curious discussion of standalone | deriving with a `for` keyword: | | http://www.haskell.org/ghc/dist/current/docs/users_guide/type- | extensions.html#stand-alone-deriving Same problem. Standalone deriving is described here http://www.haskell.org/ghc/dist/current/docs/users_guide/deriving.html#stand... The best thing is to start from the user guide root http://www.haskell.org/ghc/dist/current/docs/users_guide (which, incidentally, is the user guide for HEAD, not 6.10), and follow links from there. Simon is removing the earlier droppings. Simon