Select everything (Ctrl+A) and then click Format Change Case. In that
dialog, select "Sentence case" and click OK.

Then you _must_ read through the document and make corrections. The Change
Case follows the very simple rule that the next letter after sentence-ending
punctuation is made upper case, and everything else is made lower case. It
doesn't understand that names need to be capitalized.

--
Regards,
Jay Freedman
Microsoft Word MVP FAQ: http://word.mvps.org
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all may benefit.

Fran wrote:
I erred in creating a document using capital letters only. Is there
a way to amend the document to only use capital letters where
applicable? Or do I have to retype the whole document?
Thanks