JP1 Remotes

I am unfamiliar with this term as it applies to remotes. Discrete (in dealing with amplifiers) means one unique amp per channel. How does this pertain to the way a remote controls a particular device?
Yes, by this ? I am labeling myself a full-on newbie. The header said no dumb questions, right?

You can look it up in the glossary here:
http://www.remotecentral.com/features/glossary1.htm

Then go here:
http://www.remotecentral.com/files/use-ir.htm

Cool beans! Thanks.