Is their a way to find out what version a file is? IE I save / export a Civil 3D drawing to AutoCAD 2009 version. Then I need to save a copy back to 2004 and 2000 versions. Is there a way to see what version a file is currently saved at? I know in my past life we could get the programmers to look at the code and it told them what version it was. Can an average use tell?