See:

http://word.mvps.org/FAQs/Formatting...eformatted.htm

--
Greg Maxey/Word MVP
A Peer in Peer to Peer Support

Curious Doug wrote:
If I add a bullet before a paragraph, all paragraphs are given a
bullet until I press Ctrl-Z. If I center a paragraph, all paragraphs
are centered until I press Ctrl-Z. After Ctrl-Z, the paragraph I
originally altered retains the change, but a person can hit Ctrl-Z
just so many times a day before going crazy. This happens in all new
documents, not just in specific documents. Any suggestions?