How to hide and unhide a slide in Microsoft PowerPoint, and view hidden slides while you're in presentation mode

· You can hide and unhide a PowerPoint slide by right-clicking it in the sidebar.
· You can still view any hidden slides while you're in presentation mode — they'll appear gray or show a null symbol once they're hidden, however.
· You may wish to hide slides you don't plan on using for a presentation, but don't want to...