I’m working away on a new book, finally getting some traction, and then a section of a document suddenly has a different margin or line length. Instead of running the full length of the page, it’s like two-inches long. I’m having trouble figuring out what I did so that I can undo it.
Expose the ruler, and check to make sure that you did not accidentally set the margin. This happens to me sometimes when I copy/paste into scriv from other programs (the other programs had a funky margin so scriv is not “at fault”).