Certain object types, including ACIS solids and regions, are not documented. The CDR file is a ZIP-compressed directory of several files, including XML-files and the RIFF-structured riffdata.cdr with the familiar version signature in versions X4 (CDREvrsn) and X5 (CDRFvrsn), and a root.dat with Corel Draw X6, where the bytes 9 to 15 look slightly different.Īs AutoCAD has become more powerful, supporting more complex object types, DXF has become less useful. Versions of AutoCAD from Release 10 and up support both ASCII and binary forms of DXF. CorelDraw file formats include CDR, CorelDraw Compressed (CDX), CorelDraw Template (CDT), and Corel Presentation Exchange (CMX).ĪutoCAD DXF (Drawing Interchange Format, or Drawing Exchange Format) is a CAD data file format developed by Autodesk for enabling data interoperability between AutoCAD and other programs. CorelDraw is a vector graphics editor developed and marketed by Corel Corporation of Ottawa, Canada.