AutoCAD 2012 DXF Reference February 2011 © 2011 Autodesk, Inc. All Rights Reserved. Except as otherwise permitted by Autodesk, Inc., this publication, or parts thereof, may not be reproduced in any......DWF, DWG, DWG (logo), DWG Extreme, DWG TrueConvert, DWG TrueView...custom object data format:70 0 = DWG format 1 = DXF format ARC The...