applying formatting to word formats entire document

[Guest]

When I highlight text and apply formatting (bold, underline, italic), the
entire document formats. If I hit undo, the rest of the document goes back to
normal and my highlighted text is formatted. Why is this happening and how
can I stop it?

 

[garfield-n-odie]

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