[Zubersoft]

The only way the file would be larger than the screen in landscape orientation is if you changed the page scaling mode to be something like "Fit Width". If it is set to "Fit Screen" then it wouldn't extend past the bottom of the screen.  Book mode isn't currently designed to scroll like what you are describing, where it scrolls one page and then the other. In the future I could look into trying to support something like that, but it would be very complex to handle every case correctly. 

Mike