When you type text within PowerPoint, the appearance of your text, such as its font type and size is based on the Theme which is applied to your presentation. So if you use PowerPoint’s default Office Theme, then anything you type into a text object may be in the Calibri typeface. You can easily change the Theme Fonts set altogether for your presentation, and all text instances will change to the default typefaces of the new Theme or Theme Fonts set. However, there may be times when you want to override these defaults and choose a typeface that is different — or even a different font size.
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