You can add or edit a rule or a rule exception in a policy. A rule defines directories or files that are not protected, and a rule exception defines entities within the scope of the rule that are protected.
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When you formulate policy rules, you can use macros to assist specification of various Mirage directory paths addressed by the rules. For example, macros let Mirage and the administrator handle cases when some endpoints have Windows in c:\windows and some in d:\windows. Using macros and environment variables makes sure Mirage backups important files regardless of their specific location. For information about the macro specifications, see the VMware Mirage Administrator's Guide.