Object Tree Content
The object tree presents all building objects categorized in a hierarchical order. The content of the tree depends on the active working window (2D/3D) and the open drawing-model pair.
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        Model window and drawing-model pair for architectural design The tree presents all objects in the architectural model.  
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        Model window and drawing-model pair for structural design The tree presents all objects in the structural model.  
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        Drawing window active The tree only presents the objects in the drawing-model pair (for example, floor plan for the first floor) in question.  
