1.60  2004/11/20  new macro \pspolygonbox, 
                  using pst-xkey (hv)
1.50  2001/02/08  Standard packaging (.ins + .dtx files).
1.40  1998/07/09  Define `PolyRotation' parameter as a real number
                 and not as an angle, to allow to use the macro
                 degrees' before to draw a polygon.
1.30  1998/02/06  Rename `PsPicture' parameter to `PstPicture' for
                 consistancy.
1.20  1997/06/27  First public release.
