As a follow-up to this, having a shortcut to change the active drawing label to "Clear Label" would be nice, too. I like that the < and > keys stop at Label 1 (if it's a bug, please keep it), but having a shortcut to quickly erase (i.e., use clear label) over any other label would be great. Perhaps a Ctrl + right click (a "super" erase to overwrite any with the clear label)?
Thanks!