Version 1.0, August 31, 2001, Copyright, Hugh Jack 1993-2001
· As mentioned before, these should be treated as non-standard formats, but they will increase some of the transferability of data.
· For marketing reasons most major vendors of CAD systems attempt to define their own "standards". Examples include `DXF' for Autocad, `CADL' for Cadkey, `SAT' for ACIS.
· An example of a proprietary format is the CADL file produced by Cadkey for transferring geometric entities through the use of an ASCII file. Such entities may be lines, points, arcs, splines, etc.
