If the superscript you want to add to your document is a footnote, Word's Insert Footnote command, found on the References tab, automatically formats the superscript for you and creates a line in ...

You can add a signature to a Microsoft Word document in several ways, depending on the computer you're using.

Learn how to add superscript and subscript buttons to the toolbars in Word, PowerPoint, and Excel in both Office 2004 and 2008.