Peter Kämpf (mailto:Peter.Kaempf@NOTNEEDED.fbmev.de) Starting with [Fortran], I discovered [Tcl] as a frontend several years ago and love to program with it. I work on a complex [GUI] for some number-crunching applications and needed to develop all sorts of code to improve data entry and display. Samples are: Splines with free (non-monotonic) values of X and Y [Cubic Splines] Listboxes which can be sorted by drag-and-drop [Sort Listboxes by Drag-and-Drop] Utility to transfer files and folders between different encodings [source with encoding] Ah, the last one gave it away: Yes, I prefer to code on the Mac.