Version 3.0
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1. Program has been speed up due to dumplicated test of identical edges which
   has been eliminated. Speed up of up to %50!
2. Support for surfaces has been added using the cagd_lib library (see
   cagd_lib documents for more). A new '-f FineNess' flag has been added to
   support subdivison fineness.
3. A much simpler parser has replaced the existing one. The new parsing (and
   new text fromat) is much easier and faster, and obviously support free
   form surfaces/curves as well (see cagd_lib from more).
4. The '-o Objects' object has been taken out.

Version 2.0
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1. No graphic device is supported any more - only text files. Use poly3d to
   view the results.
2. Program has been ported to Unix system and compiled under:
   a. BSD4.3, using gcc
   b. Iris 4d, Irix 3.2, using cc.


Version 1.1
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1. Polylines are now handled correctly.
2. EGA display device improved (slow mouse, wierd colors, etc.).