Header and footer contents repeat automatically when a page break is
inserted (manually by the user or automatically by Word). Repeating the
contents of the page is more difficult though, since Word is not a page
layout application. Copying and pasting would seem to be the easiest
solution.
Also, note that, depending on what should be repeated, you might be able to
use AutoText (Word 2007 building blocks offers more options) and/or macros.
