OO modeler since 1984 where I started with Steve Mellor and Sally Shlaer. Model driven projects include complex graphics layout, factory material transport, ultrasound diagnostic and cardiac pacing, gas chromatography and semiconductor diagnostic, professional video special effects and networked military battle simulation. I author web articles and books and professional training materials on Executable UML and MDA.  I am currently a contractable software architect providing model/full system development, consulting and training at my company Model Integration, LLC in San Francisco, California.  Email: leon_starr ... modelint.com