Since nobody seems to have mentioned his passing yet, I thought I might. David Tilbrook died (from complications of COVID-19) in the early hours of January 15, 2021. He had been in long term care in Toronto for just over a year. His web site remains up and running for now at http://qef.com/ though I don't know for how long that may last. -- Greg A. Woods Kelowna, BC +1 250 762-7675 RoboHack Planix, Inc. Avoncote Farms