User key to toggle to and from RPN

[ekeppel]

I'm glad it worked for you. I haven't tried it on the emulator, so I don't have any help for you there.

You might like to try replacing K_View with K_Help since you are looking for speed. That would give you the fastest toggle, shift-help-help. I would use this myself, but shift-help-help is currently assigned to pop up the Virtual Keys soft keyboard which I use more often. :-)

Eric