Word can easily combine content from several documents (and various other files) into one document. And, though Word produces page-based output, it's internal workings are not at the page level - unlike page layout software, it uses information from the current printer driver to format each page. You can, of course, use page breaks and Section breaks in Word to achieve a measure of page-level control, but that's not really how Word is intended to work. If you want page layout software, as distinct to a word processor, you'll need an application like Publisher.

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]