Adding headers and footers to your Microsoft Word document allows you to have consistent text, numbering, and even images to the top or the bottom of each page in your document. The most common information displayed in a Header or Footer is page numbers, closely followed by document name. You only have to add the header or the footer one time and it will cascade through your entire document. You can also update your header or footer with just a double-click of the mouse
Using Word 2010? Read How to Add a Header or Footer to a Word 2010 Document and How To Insert Items into Word 2010 Headers and Footers.