In a thread starting at: http://forum.swarthmore.edu/epigone/geometry-research/pefrorsken Clifford J. Nelson advises me to forsake a Python-based approach for another language called Clean, because "Python is not supported well for the Mac." I thought I'd run that by comp.lang.python, as well as the Python edu-sig. Given the importance of Mac technology in the schools, limitations re Python on that platform are of some relevance to the "Computer Programming for Everyone" (CP4E) thread. Please reply cc: pdx4d@teleport.com -- no need to post a reply to the thread mentioned above, as that's a pure geometry research list and doesn't need to get bogged down in technical discussions re Mac OS, Tkinter, IDLE or whatever (I've already posted enough along those lines, will maybe summarize feedback I get re Mac). Kirby