L.S., I just found a site that compares o.a. Haskell to other languages[0] and Darcs to other version control systems[1]: Hammer principle. Haskell scores quite good, Darcs could do better. Regards, Henk-Jan van Tuyl [0] http://hammerprinciple.com/therighttool/items/haskell [1] http://hammerprinciple.com/versioncontrol/items/darcs -- http://Van.Tuyl.eu/ http://members.chello.nl/hjgtuyl/tourdemonad.html Haskell programming --