To type with superscript and subscript in PowerPoint, you can use keyboard commands, a toolbar button, or the Formatting menu.

Learn how to Disable or Turn off Superscript and Subscript in PowerPoint. Superscripts appear above, while Subscsripts appear below the baseline.

Learn how to add superscript and subscript buttons to the toolbars in Word, PowerPoint, and Excel in both Office 2004 and 2008.

You can turn this off in PowerPoint, either on a case-by-case basis or altogether. Other AutoCorrect applications of superscript -- and subscript -- are the auto-formatting of common fractions ...