Manual valve body W/O engine braking?

I call the arm on the outside of the trans the kickdown lever.
Throttle Pressure Lever, at least I think that's the correct terminology. Don't get me wrong, I've been calling that a KD lever for over 30 years...... then again, many years ago, I worked with a Disgruntled Old Redneck. I told him "I've been doing this 15 Fn Years" his reply? "Well, you've been doing it wrong for 15 fn years!" Actually, the damn drywall didn't care, it was a matter of preference lol