I think most documentation calls it a parking brake now. Having driven a manual for 15 years, I always use mine
to make quick 180s when I park. When I was first learning to drive, I used it for hill-starts too, but haven't done that in ages. I know its 'required' in certain countries for hill-starts.
I've never used it while in motion
except to make quick 180s, as powersliding > handbrake turning.
