Crops the display of a selected PDF underlay to a specified boundary.
Access Methods
Command entry: PDF Underlay visor 
Create the Clipping BoundarySummary
The clipping boundary determines the portion of an image outside the boundary that is hidden. The visibility of the clipping boundary is controlled by the PDFFRAME and FRAME system variables.
The boundary you specify must be in a plane parallel to the PDF underlay.
List of Prompts
The following prompts are displayed.
On
Turns on clipping and displays the PDF underlay clipped to the previously defined boundary.
Off
Turns off clipping and displays the entire PDF underlay and frame.
If you re-clip the PDF 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.
Delete
Removes a predefined clipping boundary and displays the full original underlay.
New Boundary
Defines a rectangular or polygonal clipping boundary, or generates a polygonal clipping boundary from a polyline.
- Select Polyline
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Defines the boundary with the selected polyline. The polyline can be open but must consist of straight line segments and cannot intersect itself.
- Polygonal
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Defines a polygonal clipping boundary with three or more points that you specify for the vertices of a polygon.
- Rectangular
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Defines a rectangular boundary with the points that you specify for opposite corners.
- Invert Clip
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Inverts the mode of the clipping boundary: objects are clipped either outside the boundary or inside the boundary.