Stopping automatic application of style to whole document

[Guest]

When I apply style or formatting to one line of text, the style is applied to
the whole document. How can I prevent this?

I am using Word 2003.

 

[Jay Freedman]

When I apply style or formatting to one line of text, the style is applied to
the whole document. How can I prevent this?

I am using Word 2003.

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