On the First Letter page of the AutoCorrect Exceptions dialog box, you can define exceptions to this rule. By default, when Word encounters a word with mixed capitalization, it corrects the word so that only the first letter is capitalized. You can define exceptions to this rule on the Initial Caps page of the AutoCorrect Exceptions dialog box. In addition, Word can automatically add text to the AutoCorrect Exceptions dialog box when you make corrections in a document. If you delete an entry from the AutoCorrect Exceptions dialog box, Word reverts to following the default rule.
Procedures Select the Tools menu.
Select the AutoCorrect command. Select Exceptions . Select the desired tab. Select the Don't capitalize after text box or the Don't correct text box, as necessary. Type the desired exception.