If a presentation contains sensitive or confidential data, you can encrypt the file and protect it with a
Encryption is a type of "scrambling" done to the file so that nobody can see it, either from within
PowerPoint or with any other type of file-browsing utility.
You can increase the number of recently used presentations up to 50, and you can pin (fasten) particular of
them to the menu so that they remain there even if you haven't used them recently.