Sometimes I want to temporarily interrupt the presentation to discuss another point. How can I black out or clear the screen without closing the presentation?
In any PowerPoint slide show, you have the option of blanking or blacking the current slide (interrupting but not stopping the show) by simply pressing the B or period key(s). Or, you can interrupt the show and display a white screen by pressing the W or comma key(s). To restart the show where you left off, press the same key again.