L.S., The web page http://cvs.haskell.org/Hugs/pages/hugsman/libs.html states: The libraries Directory, Time, and CPUTime, are not currently supported. As there are files Directory.hs, Time.hs, and CPUTime.hs in the {Hugs}\lib directory, I suppose this is not true anymore. Greetings, Henk-Jan van Tuyl --