There are many situations where it is useful to save your file in a fixed-layout format that is easy to share and print and hard to modify. Examples of these situations include resumes, legal documents, newsletters, and any other file that is intended to be primarily read and printed. The 2007 Microsoft Office system offers a free add-in to save or export this type of file, but you must first install the add-in before you can use it. Other third-party products may also be available to export a Microsoft Office file into a fixed-layout document.