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		       Copyright (c) 1993

    The National Science and Technology Research Center for
     Computation and Visualization of Geometric Structures
		     (The Geometry Center)
		    University of Minnesota
		         400 Lind Hall
                       207 Church St. SE
		  Minneapolis, MN  55454  USA

The software distributed here is copyrighted as noted above. It is free software and may be obtained via anonymous ftp from It may be freely copied, modified, and redistributed under the following conditions:
  1. All copyright notices must remain intact in all files.

  2. A copy of this file (COPYING) must be distributed along with any copies that you redistribute; this includes copies that you have modified, or copies of programs or other software products that include this software.

  3. If you modify this software, you must include a notice giving the name of the person performing the modification, the date of modification, and the reason for such modification.

  4. When distributing modified versions of this software, or other software products that include this software, you must provide notice that the original source code may be obtained as noted above.

  5. There is no warranty or other guarantee of fitness for this software, it is provided solely "as is". Bug reports or fixes may be sent to the email address above; the authors may or may not act on them as they desire.
If you use an image produced by this software in a publication or presentation, we request that you credit the Geometry Center with a notice such as the following:
  Figures 1, 2, and 5-300 were generated with software written at the
  Geometry Center, University of Minnesota.

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Created: Feb 27 1995 --- Last modified: Jun 18 1996