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File Encryption

Password to open - Type a password in the Password to open box to prevent others from opening a workbook without the password. A password is case sensitive and can contain up to 15 characters, including letters, numbers, and symbols. If you lose the password, you cannot open the workbook.

Advanced - Displays a dialog box allowing you to change the type of encryption used.

File Sharing

Password to modify - Type a password in the Password to modify box to prevent another user from opening, making changes in, and saving the workbook without a password. If someone opens the workbook as read-only and changes it, it must be saved with a different name. A password is case sensitive and can contain up to 15 characters, including letters, numbers, and symbols. If you lose the password, you cannot open the workbook.

Read only recommended - Recommends that others open a workbook as read-only. If someone opens the workbook as read-only and changes it, it must be saved with a different name.

Digital signatures - Allows you to view a log of users who have digitally signed this document and add your own signature.

Privacy Options

Remove personal information from this file on save - Select to limit the information that is given on the Summary tab of the properties dialog for this document when saved.

Macro Security

Macro Security - Displays the (Tools > Macro > Security) dialog box.