Digital Light & Color

Add direct control for transformation select and deselect, to be used when the pointer is hovering over a transformation.
For example, right-click menu item(s) and-or a toggle control for selection/deselection

Benefit : ease of use and affordance

Ctrl-click does this now.

Thanks, however it is not evident from the visible user interface ( "affordance" )

That's the problem with all keyboard shortcuts. The visual part of the interface is already somewhat crowded so I don't want to add another icon to the caption bar.