Formatting selected text

[Keith14]

When I format selected text (say by underlining it) the whole document is
altered, losing its formatting and becoming underlined. I then have to 'undo'
the last action which corrects the problem. Extremely annoying! How can I
stop this?

 

[garfield-n-odie]

See http://word.mvps.org/FAQs/Formatting/WholeDocumentReformatted.htm .