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 ...

Learn how to change the default view mode so as to always open PowerPoint presentations in Outline, Notes, or Slide Sorter mode.

Like Microsoft Word and Excel, PowerPoint also opens old files in normal view, and it is a bad practice these present days. That is why you can make PowerPoint open old PowerPoint presentations in ...