Pdfclip

Select PDF underlay

Selects the PDF underlay to clip.

Click the frame of  the PDF underlay to select.

Delete

Deletes the existing clipping boundary.

New

Depending on whether or not a boundary already exits the command will produce following prompts:

If no boundary exists you are prompted:

Enter PDF clipping type [Polygonal/Rectangular] <Rectangular>: - type P or R.

If a boundary already exists you are prompted:

Delete old boundary? [Yes/No] - type Y or N.

This option replaces the existing clipping boundary with a new one. Please note that the command will only continue (by prompting you to select a new boundary) after the previous boundary is deleted. So typing No at previous prompt will cancel the Pdfclip command.

Polygonal

Creates multi-sided clipping boundaries; prompts you:

Start of polyline - pick a point in the drawing, or specify x,y coordinates.

Next point - pick another point in the drawing, or specify x,y coordinates.

Undo/next point - pick another point in the drawing, or specify x,y coordinates.

Undo/next point - pick more points, or press Enter to complete the polygon.

Type U to undo the previous point.

Rectangular

Creates a rectangular clipping boundary; prompts you:

Specify first corner - pick a point in the drawing, or specify x,y coordinates.

Specify opposite corner - pick another point in the drawing, or specify x,y coordinates.

ON

Turns the clipping boundary on.

OFF

Turns the clipping boundary off; all of the PDF underlay is again visible. The clipping boundary is saved though.