How to assign key command to Line tool in MIDI editor?

I can’t figure this out and can’t find what I’m looking for in the manual.I can’t find a key command for the line tool in the MIDI editor. It must be called something different in Key Commands…? Or I’m just missing something obvious?

It’s the Curve Tool in Key Commands. If you assign a Key Command to it, it will toggle through the different line modes when you hit the key repeatedly.

Ahhh! That’s why I couldn’t find it in the key commands. Thanks!