In the future, I could talk about graphical languages with factbases (lisp+prolog-lisp), VF (event-based programming), and gui's for pdf generation. All of these topics would require some preparation, so I probably can't be ready for this next meeting. Let me know if any of these are of interest, and I will begin to cobble together some slides.
On short notice, I could reprise either of my presentations about event-based programming given at Cdn IEEE and DEBS.
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