You can hide or show objects in a display set based on object classification. For example, if you classify objects by construction status, such as New, Existing, and Demo, you can exclude objects with the Demo classification from the display. When the display is used in the drawing, those objects do not appear.
Objects filtered from the display are not removed from the drawing. Their display is turned off only in viewports using the display set in which objects of that classification are filtered. You can change the filter to display them again. Because the objects still exist in the drawing, the display of other objects in the drawing does not change. For example, if you filter dampers from a floor plan, the ducts that connect to the dampers still end at the points where the dampers are located.