I am using the Mac right now, but I've seen this on windows. On the Mac if you press Option-Command-R, the current window will go full screen and often spilt the text into multiple columns. The problem is I find it nearly impossible to scroll. I use the two finger scroll method on the touch pad. I can slowly scroll through normal windows in Logos just fine, but a full screen window I cannot. What happens is the slightest movement may jump 1-2 screens making it impossible to read. I have tried using the up/down arrow keys to just move one line at a time but those keys don't work in full screen mode.
Any ideas? The mac doesn't have page up/down buttons - and not sure if that would even work in Windows - haven't tested.