Hotkeys > Tools > 
Comparison
 
 
 

The following hotkeys are available in the Comparison tool:

Press: To:
Shift + O Opacity.
Shift + H Toggle tool visibility.
Shift + R Swap reference.
Ctrl + click Move pivot point or region center.
Player hotkeys 1 - 9 on reference side of manipulator Cycle through inputs and outputs.
Player hotkeys C, A on reference side of manipulator Cycle between channels and alpha.