One of the things that makes me nuts when I’m reading manuscripts is pages that don’t end where my copy of Word (or my Submittable feed) says they should. I get the title for the next poem, chapter or story at the bottom of the page, often disconnected from the body of the text. It’s amazing that many writers don’t know about Page Break. I don’t know how you do this on a Mac, but it must be available – on a PC, it’s EASY. No, you don’t use the Enter key to shove the cursor onto the next page. PLEASE don’t do that. Because if my Submittable screen or copy of Word isn’t set with exactly the same margins, the page break won’t be in the right place.
How to do it right? When you get to the end of the poem, story, etc., hold down the Ctrl key and hit Enter. That will force a Page Break, which will work no matter how long the reader’s page is set to be. Carries over into PDFs and makes it easy to do layout (if your book is, as we hope, accepted). But even for reading manuscripts, and whether read online or printed out, this matters to a reader.