See http://word.mvps.org/FAQs/Numbering/ChapterNumber.htm

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Suzanne S. Barnhill
Microsoft MVP (Word)
Words into Type
Fairhope, Alabama USA
Word MVP FAQ site: http://word.mvps.org
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"Elly May in NC" Elly May in wrote in message
...
I have a large document that I have to add amendments to periodically, so
to
keep from having to redistribute the entire document, I want to number
pages
of the Amendment with a number and letter (example, an amendment to page
10 I
would number as 10-A. I have not been able to do this in my document
even
with adding section breaks - the program does not allow me to add a
number+letter number. I don't want to change the format of the entire
document, just the pages for Amendments without it renumbering the rest of
the document.