Hi Glutanimate!
Thank you for this absolutely amazing add-on!!! Upped my learning effect by a bunch of levels.
To all my other Image Occlusion Enhanced lovers: The shortcut WIN + Shift + S lets you chose a rectangle of your screen to immediately copy it into your clipboard. If you open Image Occlusion Enhanced via Ctrl + Shift + O, you will find the screenshot directly on your flashcard.
I am a full on keyboard nerd as (I play the piano and some RTS games).
I would adore the feature if the button 
on the back side of a card would be able to be pressed on by shortcut - for example via Ctrl + Space.
Best regards
Jakob