Rob,
Are you referring to the "Creating an Upgrade spreadsheet" in this faq:
[Link: hifi-remote.com]

So Do I understand this correctly, instead of having 30 keymoves programmed to control my Apex DVD, I can create a spreadsheet that has these EFC's mapped to keys and them make that a device code? This way the control is inherent and there would be no need to have keymoves for this device?

Cheers