From the FAQ:
30. I changed the formatting on one thing and now my whole document
has changed.
http://www.mvps.org/word/FAQs/Format...eformatted.htm

--
Charles Kenyon

Word New User FAQ & Web Directory: http://addbalance.com/word

Intermediate User's Guide to Microsoft Word (supplemented version of
Microsoft's Legal Users' Guide) http://addbalance.com/usersguide

See also the MVP FAQ: http://word.mvps.org/FAQs/ which is awesome!
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"June Macleod" wrote in message
...
I am using Word 2003 and when I select a paragraph in my document and make
it bold it turns the whole document bold. I then have to press CTRL+Z to
reverse this last step and leave only the selected paragrpah bold.

How can I turn off this behaviour?

June