Hard line breaks â These were acceptable in the past but not anymore. You may find a directory that accepts this but it is unlikely. A hard line break occurs when you have one or two line sentences. Authors want to do this because it is supposed to be more readable and the reader is more opt to read the entire article. The reason this is not acceptable anymore is because it just looks bad and unprofessional. To play it safe, write your paragraphs with at least three lines per paragraph.