The release notes for ghc 5.02.1 say: 1.4.4. New experimental features Partial support for hierarchical module names. - but I could not find a document describing how to use this feature. Is it possible to use hierarchical module names with ghc at present, and if so, how does one write and use a hierarchically-named module ? Tim -- "They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." -- Benjamin Franklin