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David Harrington has been writing AutoLISP and articles on AutoCAD since Release 9 and has been an active user of AutoCAD since 1987. Dave is an instructor and speaker for Autodesk University and is widely accepted as an expert in the field. He has won the coveted award of Cadence AutoCAD Top Gun and Cadalyst AutoCAD Challenge and has been published in national magazines. Original author of REVCLOUD, Harrington strives to improve AutoCAD for the users, not customers. He has worked with many Local AutoCAD User Groups as well as serving as President of Autodesk User Group International.
Bill Burchard is an information systems consultant with Psomas and has been in the AEC business for over 20 years. He has extensive experience in computer modeling and applications development for AEC projects including plan preparation, technical publications, engineering design among other areas of expertise.
David Pitzer has over 11 years experience with AutoCAD and is a contributing editor to CADalyst Magazine. He has been published in CADENCE and AutoCAD Technical Journal and is a sought after speaker at conferences.