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     Obj - Browser

     In the modes VWR and CAD the browser window is left of the graphics window

      The first node is the main-model
      all internal sub-models are presented below this.

      All object-types of the active model are presented;

      - Select an object-type (left mouse-button) to display all objects of this type
        Reselect object-type to close this group.

      - Select an object to hilite object and add it to the active group;
        In CAD-mode the object-ID is written into the active input-field.
        Reselect object to unhilite object and remove it from the active group.

      Select a sub-model or the main-model with the right mouse-button to activate.