Currently it takes 2 awkard clicks to change ruler mode, something which I do very very often while building. ( Perhaps I've missed a shortcut ? )
Please could we have either or both of ...
1. Simple Shortcuts like W,L,R, ( not ctl+shft+ etc )
2. Radio buttons instead of popup menu.
Radio buttons would reduce 2 clicks to one.
Shortcuts would be joyful !!