All slides within PowerPoint are based on one of the available Slide Layouts (we call these just layouts for the rest of this tutorial). These layouts can be chosen when you add a new slide or you can even change the layout of your existing slides — both these options are accessible from the Home tab of the Ribbon. Click the down-arrow on the New Slide button to get a drop-down gallery. Click any of the layout thumbnails here, and you end up adding a new slide based on that layout.
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