Invention of the Geometric Inference Engine. While working at Xerox Parc, Martin Newell and Dan Fitzpatrick came up with the idea of the Geometric Inference Engine.
Development of Vellum CAD, a 2D drafting application for the Macintosh and founding of Ashlar Incorporated, Sunnyvale, California.
Development of Vellum 3D wireframe.
Localization of Vellum for various markets.
Porting of Vellum 3D to Windows 3.1.
Support for surfaces.
Porting of Vellum 3D to 32 bit Windows by Cosmoworks, Famotik and Armonicos.
Support for surfaces and volumes extended by Armonicos, Hamamatsu, Japan. Some of this code has been disputed due to copyright issues and was therefore removed from DesignFreeQ.
Vellum GmbH, Miltenberg, derives Draftboard from Vellum 32 bit source code.
Cosmoworks derives DesignFreeQ from Vellum 32 bit source code.
Cosmoworks develops AutoCAD DXF/DWG interface.