You can convert selected text to uppercase or lowercase letters.
Proceed as follows:
| 1. | Select the Text edit tool  in the Quick access toolbar and select the text that you would like to change. |
| 2. | On the ribbon tab Home | group Character, click on the icon  . |
| 3. | A menu opens for applying Change capitalization to the text. |
Note: Applying the "Change capitalization" options is an actual spelling change that is also perceived as such by the spell check.
If uppercase words are to be ignored during the spell check, you can change this in Options: Spelling tab.