Quick Reference

Crops the display of a selected DGN underlay to a specified boundary.

Access Methods


 Ribbon: Insert tab Reference panel Clip
 Shortcut menu: Select a DGN underlay to clip, right-click in the drawing area, and click DGN Clip.


The clipping boundary determines the portion of a DGN underlay outside the boundary that is hidden. The visibility of the clipping boundary is controlled by the DGNFRAME system variable.

The boundary you specify must be in a plane parallel to the DGN underlay.

TipUse the generic CLIP command to clip images, external references, viewports, and underlays.

List of Prompts

The following prompts are displayed.


Turns on clipping and displays the DGN underlay clipped to the previously defined boundary.


Turns off clipping and displays the entire DGN underlay.

If you reclip the DGN underlay while clipping is turned off, clipping is automatically turned back on. You are prompted to delete the old boundary even when clipping is turned off and the clipping boundary is not visible.


Removes a predefined clipping boundary and displays the entire DGN underlay.

New Boundary

Defines a rectangular or polygonal clipping boundary, or generates a polygonal clipping boundary from a polyline.

Specify clipping boundary or select invert option: [Select polyline/Polygonal/Rectangular/Invert clip] <Rectangular>:

Select Polyline

Defines the boundary with the selected polyline. The polyline can be open but must consist of straight line segments and cannot intersect itself.


Defines a polygonal clipping boundary with three or more points that you specify for the vertices of a polygon.


Defines a rectangular boundary with the points that you specify for opposite corners.

Invert Clip

Inverts the mode of the clipping boundary: objects are clipped either outside the boundary or inside the boundary.

NoteYou can only create a new clipping boundary for a selected DGN underlay when the old boundary is deleted.