- Choose in the options toolbar if you want to stretch a rectangular area
  (rectangle symbol) or a polygonal area (polygon symbol).
- Set the first corner of the stretch area.
- Set the second corner of the stretch area.
- For polygonal areas, set the other corners of the stretch area and
  right-click the last corner when finished.
- Set the reference point for moving using the mouse or enter a coordinate
  in the command line.
- Set the target point.