Uwe> Thanks for the link. This I was looking for. As I understood it Guile Uwe> is not considered seriously, why? The biggest shortcoming is its deep-rooted dependence on conservative GC. Besides, nobody ever sent me any strong arguments *for* Guile. The thing that never ceases to amaze me is that, even though Guile seems to have the biggest active developer group of all the Scheme implementations, it is only slowly, if at all, catching up with the implementation quality of other, more carefully designed and better engineered Schemes, some of which are essentially one-man projects. -- Cheers =8-} Chipsy Friede, Völkerverständigung und überhaupt blabla