What security measures are included in the powerpoint2007 preparation menu item?

Click the "Office Button" and select "Prepare". At this time, there are three different ways to set document security issues; (1 and 2 in the red area in the figure below , 3)

1. Encrypt the document, encrypt the document, you must enter the correct password before you can enter the PPT; (Recommended learning: phpstorm )

2. Restrict permissions. Multiple users (email accounts) can be set. Different users have different permission settings. A network link is required to complete this function;

3, is marked as the final state, and there is no password, but everyone can access the document to preview the document. After opening, the menus and tools are completely gray and cannot Edit and revise documents.

The above three methods are set according to personal needs.

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