To open the header and footer toolbar ribbon, press ALT + N and then press H, E. The header is the section of the document that appears in the top margin, while the footer is a section of the document at the bottom margin. Headers and Footers generally contain information such as the page number, date, and document name.
Header and footer are very similar to the way pages appeal in a hardcover or paperback book. There are often chapter titles, or the title of the book at the top and bottom of the pages, as well as pages numbers and other information.
The question's answer stats that in the view MENU and not tab is to select the Header and Footer. Perhaps it was to reference word 2003. I find the Header and Footer in the INSERT TAB.