Also, why can I not get a full screen snapshot of the viewer?
I want what you showed, with margins left and right set to 100. Like a full sheet of paper in Word or OpenOffice, looks when printed. Like I said, setting it works for full screen, just not when not in full screen. I don't think, in my opinion anyway, that a lot of people would like that look in non full-screen. Can you set your margins to 100 left and right to see what I mean?
How hard is it for me to modify the calibre viewer files to add an option to have only an Exit Full Screen keybinding?
EDIT: My previous post has to be moderator approved.