Thank you for this answer. I did understand that somewhere along the way, the pages are breaking “on the fly” since that is how EPUB allows me to increase text size. I import my ebooks into Calibre and convert them there to EPUB, MOBI, PDF, etc. In that process, I am able to give formatting instructions that will force justify, or set margins, or make text a certain size. I guess I am asking, is there some kind of formatting command that would tell the pages to break only AFTER a full stop/period? I am a screenwriter, and there is such a command in my screenwriting software.