https://www1.gotomeeting.com/join/652195414 Conference Call: (419) 400-0288, access code 652-195-414 Meeting Password: mep Meeting ID: 652-195-414 Tom Cassell Email him at tcassell@microcad3d.com Leave a phone number and he will get back to you. He is technical. Note: In Autocad, PIPING (natural gas, fire, steam, ...) and PLUMBING (Toilets, sinks, hot & cold water pipes) are VERY different. For Autocad, and I think also for REVIT, the big assist is: PIPING: quick drawing and interference checking. PLUMBING: bill of materials / parts inventory (counts the toilets, etc.) Autocad MEP vector based. (Is what Tom showed me, mostly) Revit -- is "completely different" from autocad ALSO has a MEP, but it looks completely different. Revit is Farther behind. Only on its third release. But in a couple of years "the POTENTIAL is incredible". It INCLUDES Autocad MEP. 2005: "The market is boiling down into a fight between Autodesk, Dassault http://www.3ds.com/ and UGS." Autodesk revenues are over $1 billion. "the publically-held Autodesk might acquire the privately-held UGS. " 2008 March: In MCAD (Mechanical CAD), which excludes --creating and animating imagery, --GIS (Geographic Information Systems ?), --AEC (Architecture, Engineering & Construction), --??, the biggest, maybe in order, are Autodesk, Dassault Systemes, PTC, and UGS. Dassault and PTC are entirely MCAD. Autodesk and UGS (Being now "buried inside" Siemens) are not.