411 votesCes commented
Yes, I agree. The CTRL-Z and CTRL-Y keyboard shortcuts would be very useful as well as two buttons for 'Undo' and 'Redo'.
Thank you for developing this wonderful tool!
112 votesCes commented
I also think that it would be great to be able to change the outside color to black.
This would be very useful for reading comfort in full screen and for presentations.