A full-featured 2-D and 3-D CAD program for MS-DOS, Microsoft Windows, Macintosh, and Unixworkstations from Bentley Systems, Inc. Created in 1984, MicrOSTAtion is a high-end package used worldwide in environments where many designers work on large, complex projects. MicrOSTAtion Modeler is a superset of MicrOSTAtion that provides solid modelling, and MasterPiece is MicrOSTAtion' s rendering and animation program. (2001-04-19)