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...... 217 ASCII DXF Files . . . . . . . . .... . . . . . . . . . . . 219 ASCII Control Characters in DXF Files...