Thanks- interesting info. In my case, I mostly use the "Flutes" organs that use DSP, so RotarySP switch gives a nice Leslie-like gradual-to-fast or gradual-to-slow speed change.

My Code49 does not have a "Learn" mode; it has alot of settings but fairly "fixed". It cannot send a generic MIDI string, nor learn a MIDI string.

I sent the following to Yamaha, trying to give it a positive feel to request the feature:

"I know that Yamaha is well-known for listening to their customer's ideas and suggestions ... Here is a Feature Request. The MIDI, External Controllers page lets us set MANY (over 100?!) parameters to be controlled using external MIDI devices. I'm requesting adding of one more item: ROTARY SP. That is, since an internal footswitch can be set to control ROTARY SP (rotary speed fast/slow toggle), it seems like it would possible to have an external MIDI device control be able to control ROTARY SP as well as the many other items in the list. It would be HUGELY useful to me (and likely others, as I have seen this come up on the Forums by others too). THANKS! I really appreciate that Yamaha listens to its customers!"