The terms Header and Footer typically come from word processing programs; these denote repeated elements that show at the top and bottom of every page. Headers and Footers work similarly on PowerPoint slides: the Footer is a line of text that usually appears at the bottom of a slide. Typically, the Footer area includes three placeholders: Date, Footer, and Slide number. By default, the footer with one or more of these three placeholders appear on every slide in a presentation, but you can change that as required.
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