The [Root] container is created when you first install NDS on a server in your network. As the topmost container, it usually holds Organization objects, Country objects, or Alias objects.
[Root] represents the beginning of your NDS tree.
[Root] is used to make universal rights assignments. Because of inheritance, any rights assignments you make to [Root] as the target apply to all objects in the tree. The [Public] trustee has the Browse right and Admin has the Supervisor right to [Root] by default.
The [Root] object has a Name property, which is the tree name you supplied when installing the first server. The tree name is shown in the title bar of NWAdmin.