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Groups in the DTR 
You can define privileges not only for users but also for user groups. They then apply for all members of the group. Users and user groups are called principal.

Examples of groups you can define are:
...
· Administrators
· Developer
· Propagators
· Authenticated users

In R/3 systems, groups are defined by roles. You must keep this in mind, if you use an R/3 system to store your users.
