REAPER Shows LOTS of extra parameters. Where did they come from?

Tested more thoroughly and you’re correct. MIDI CC values aren’t sent through normally, only via parameter. That being said, I’ll keep mine off and let my users use their DAW to map the parameters, if they so desire. That being said, I think maybe a tutorial on how to map specific params to MIDI would be useful. I can look into writing it myself later on, but it won’t be for a week or two.