Ah, thanks for that. I had intended going (since I've never met Ken), but alas, my daughter's family had previously scheduled to visit that weekend, so I couldn't go. The 'grep' story was amusing, but historically, probably the most valuable thing was the detail on the origins of B - DMR's paper on early C ("The Development of the C Language") mentions the FORTRAN, but doesn't give the detail on why that got canned, and B appeared instead. Noel