Somehow my boss at my last job added a page break that didn’t show up when I turned on show hidden characters. It took me about six hours to figure out how to remove the final blank page. Online help forums were useless because he did it in such an unusual way. Looking back, even I think that surely I must have been mistaken because it’s too absurd that it would be that hard to delete a page, but I vividly remember turning on the hidden characters and getting nowhere.