We already explored how you can change between different Slide Layouts in our Change Slide Layout in PowerPoint 2010 tutorial — when you access the Home tab of the Ribbon and click the Layout button, you see the Layout drop-down gallery. The number of Slide Layouts that you see in this gallery may differ from Theme to Theme — but with PowerPoint’s default Office Theme applied, you will see 9 layouts. So, where do these Slide Layouts come from? What influences how they look, or how the placeholders within them are laid out?
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