In addition Project Manger uses AVS's ability to create object hierarchies. The object hierarchy can be helpful when dealing with complicated models where surfaces might represent faults, salt structures, and sand-shale interfaces. By using the object hierarchy one can create a group, ``faults'', composed of all of the faults. Specific display parameters (color, transparency, etc.) can then be set for the object ``faults''. These parameters will automatically be transfered to all of the child objects of ``faults'', avoiding the time consuming task of setting the exact same parameter for each fault. The object hierarchy can be created by using the new group widget to create an AVS parent object to which the surface will belong. An object can be added to an existing parent object by using the current group widget.
Once the user has selected all the desired parameters, the surface is displayed by selecting it from the surfaces widget.