Among the various Shape Effects available in PowerPoint, probably the most subtle one is the Soft Edges effect. This effect adds an eaten-up, feathered edge to a selected shape. Soft Edges work best with larger shapes, especially if you use some of the larger Soft Edge variations available.
To learn more, choose your version of PowerPoint. If we do not have a tutorial for your version of PowerPoint, explore the version closest to the one you use.
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