 Word-processing software lacks this attention to detail that could be achieved when manually setting type page by page, but professional page layout software like InDesign and Serif PagePlus can now achieve this with a fine level of adjustment over which letters to indent into the margin and by how much.Optical margin alignment is designed to be used for body text, and not for display type, text in tables, or headlines.It is often used for block quotes, which benefit from “hung punctuation.” In such cases, the leading quotation mark is outdented 100% into the margin or paragraph indent, so that subsequent lines of text align with the first character in the quotation.