See http://word.mvps.org/FAQs/Formatting...eformatted.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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"Nick" wrote in message
...
Recently I noticed very annoying feature in Word. Say, I mark title and
change font to bold. Automatically the whole text is converted to bold. So
I
need to press button 'undo' to return the original state.
I tried to change setings (Tool/Options) and reinstalled Office -- does
not
help.

Please advise