I've been mostly lurking here for around 20 years. My faves have included Russell's many black holes, Roman Black's musings and once a very short treatise on depression (the mental illness) by James Newton (thank you James, it was a real eye-opener, possibly the most valuable thing I ever read on this list). I still look forward to reading things as they trickle in, but mostly about non-PIC topics. I wonder if Solar Wind ever built their calculator? --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .