VPCLIP command
Makes viewports from entities.
                Description
Makes viewports from closed 2D entities (short for "viewport clipping") and can be easily used to show less of a drawing.
Note: This command only operates in the paper space of a
                    layout tab and only works with already existing viewports. use the MVIEW command
                    to make additional viewports.
            
                    
                Options within the command
- Select viewport to clip
 - Select a viewport border of the viewport to clip.
 
- Select clipping entity
 - Converts a close entity such as a circle or closed polyline into a viewport boundary.
 
- Polygonal
 - Draws a polygonal viewport border made of straight and arc segments. Press Enter when done.
 
- Draw Arcs
 - Draws an arc segment in the polygonal viewport. See the ARC command to explore the options within this option.
 
- Distance
 - Specifies the distance and angle for the next polygonal segment.
 
- Follow
 - Draws the next segment at the same angle as the previous polygonal segment. The length of the segment needs to be specified.
 
- Undo
 - Undoes the last polygonal segment.
 
- Close
 - Closes the polygon. The model space drawing is shown.
 
- Delete
 - Deletes the clipping boundary and returns the original rectangular viewport.