These are .plgs files modeled with the NorthCad 3D 9.8 program.  Most have
been filtered with PLGFILT to remove unneeded polys.  Some of the duplicate
verts were removed with combvert but some of the bigger files would not
go through.  If anyone is modeling with this prgram I have noticed that you
need to declare your surfaces in the modeler in counter-clockwise order...
the same way you normally do if you want to use the PLGFILT.  However if
you are using the REVOLVE feature the PLGFILT will remove all the hidden polys
with no problem.  I am going to put in two methods for removal into the prm.
One will remove polys declared one way and the other the other way...I will
put more about this in the docs with the pgm.  I'm not sure if I'll be able
to incorporate the vert removal or not.  Anyway here they are...Have FUN!!

Todd Porter
so92332@gsvms2.cc.gasou.edu

