Visual Instrument->Menu->Multi-Dimensional Selector

This menu allows the user to select between both the content of the view they want and the scope of the view. In this case the horizontal menu options allows the user to select whether they want to view 'all' of the content related to the mechanical plant or view specified subsystems. The vertical menu options represents the 'part-of' hierarchy for the selected component and allows the user to expand or focus the view to specific parts of the project.