Effective Permissions on Files and Folders

Each object has a set of effective permissions associated with it. The Effective Permissions tab of the Advanced Security Settings property page lists the permissions that would be granted to the selected group or user based solely on the permissions granted directly through group membership. If you want to find out what permissions a user or group has on an object, you can use the Effective Permissions Tool.


http://technet.microsoft.com/en-us/library/cc772184.aspx

http://technet.microsoft.com/en-us/library/cc771586.aspx