Thanks for the long and thoughtful reply, Dale. I'm beginning to get the picture. it still puzzles me though why URC can't do something like the JP1 folks have done. I mean, you don't have to incorporate the entire OFA database, just make it ease for a person to use a code that he has found elsewhere. Or, maybe I'm still missing something.

I do understand URC's business plan, emphasizing the professional installer. But, there are many people that, perhaps wrongly, would like th think they are capable of doing it themselves. In my case, I have over 40 years of computer programing experience, and I did learn how to program my VCR :-). I als do a lot of my own maintenance on my Jaguar V-12. So, i will continue to try to learn to program the MX-900, and I may be so bold as to offer URC free advice on how to make it a better product. For starters, if I ever figure it out I'll be glad to help you improve the documentation.