I'm a family doctor and amateur Tcl programmer. I put together a program I use in my office daily to manage the medical records on my patients. I've used many Tcl extensions (tclxml, Incr Tcl, tkhtml) and embedded a number of Tcl/Tk applications (tclhttpd, plume, impress) by the people on the Wiki into my program. I wrote some of my own code to organize these in a useful way for a medical practice. I'm currently working on the EDI - electronic data interchange - ANSI 837 v4010 format that Medicare and other Medical Insurance Co's use to transmit medical claims data. If anybody has experience with this area and would like to help I would really appreciate it.
I'm not a good enough programmmer to contribute anything new to Tcl/Tk but I did have a couple of Tclets that were used as demos for the Tcl plugin. I did have a little thing on "rendering" XML into a Tk text widget by mapping the XML tags using text widget marks and tags. It works pretty well in my app. I can edit the xml data right in the text widget and it all gets stored in the background as XML.