L.S., After giving the commands: :l Monad :a Monad the message: ERROR "C:\PROGRAM FILES\HUGS98/libraries\Monad.hs" - Module "Monad" already loaded repeats at every expression I want to have evaluated: putStrLn "Festina lente" results in ERROR "C:\PROGRAM FILES\HUGS98/libraries\Monad.hs" - Module "Monad" already loaded System: Windows 98 Hugs version: Nov 2003 Best regards, Henk-Jan van Tuyl