Use this procedure to specify the default display representations of AEC objects.
You can also specify the default display configuration for the Model tab and new viewports. In addition, you can specify whether the drawing uses its own display configurations or those of a host drawing when the drawing is referenced as an overlay xref.
You may find it easier to select and modify display representations using the Display Manager.
Specifying default display options for the current drawing
The display configuration is applied to the Model tab and new viewports in paper space layouts.
Clear this option if you want objects in the current drawing to use the display configurations of the host drawing when the current drawing is an overlay xref.
If you also changed the drawing units, you are prompted to specify whether existing objects in the current drawing should be scaled for the new units.