Chris gave me a copy of v19.9 before it was released, in fact i think it went on to be v20 before he actually released it. It was at the the time I was doing Pool Play (Electro) and had found some bugs in the current version.
For a tech that nobody seemed to bother with he fixed the bugs and incorporated a whole raft of other improvements to the EM Editor. Sure we had some arguments about how some manufactures in the real world switched the 0v, often being a little sulky and refusing to believe me but next day the bugs were fixed and all was good. He could at times be a little short with you but deep down took on board what you had said. He cared and was passionate about what he did, and it had to be right.
I asked him lots of times for a peek into the source code so that I could have a nose around to see how he actually achieved what he did with the EM side but that request was always firmly ignored.