My first contact to Tcl/Tk was in 1996 when I searched a widget set easy to use and powerful in graphics ([canvas]) for my [EDA] software [Xelen]. Soon I were fascinated of it and also programmed many small tools for my desktop. We are developing electronics and process lines for surface technology (http://www.electronic-thingks.de) and Tcl/Tk helps me to get GUIs very quickly to control and visualize my circuits. Residence is between Cologne and Koblenz, Germany Best regards, Christoph ([chd]) <> Person