Board Thread:General Discussion/@comment-109.66.66.27-20180820120859/@comment-35284508-20180821004205

Cartography (map making, predominantly by computer] and briefly Computer Science. Fairly long time ago. I have also taught various things for Boy Scouts and Adv. 1st Aid for the Red Cross. Various computing/networking/security topics for conferences or short courses. Never full time but I can't ever seem to get away from teaching something.