Thanks Ingenious!

So an advanced code is one that already is present on the original and is the code # specificically, say for "Mute".

A discrete code is one that only the manufacturer knows about and they probably use it for troubleshooting or testing but it is still good to have, like you say, for macros or whatever.

BTW, I realized after that I have a URC-9800.
My Bad...

I think I have a bad ESC key.

Thank you for all your support.