Simtel MSDOS Archive CDROM, August 1996.  Walnut Creek CDROM.
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 Solid modeler/C++ src
 path: \disc1\irit 
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drawfn3d.zip Display 3D parametric surfaces, part of IRIT
drawfn3s.zip Turbo C ver 2.0 sources for DRAWFN3D
intrlib1.zip IRIT Interaction library 1.0. BC++, DJGPP
irit386e.zip IRIT 3.0 EXEs for 386/486 using DJGPP 1.05
iritsm3e.zip IRIT 3.0 executables using BC++ 3.0
iritsm3s.zip IRIT 3.0 solid modeler src for BC++/DJGPP/Unix