Sets the default format to DWF or DWFx for output in specific commands.
The latest version of Autodesk’s Design Web Format (DWF) is DWFx. DWFx uses Microsoft’s XML Paper Specification (XPS) to provide viewing and publishing capabilities that are independent from Autodesk software.
DWFx files can be opened directly within Microsoft’s XPS Viewer, which is automatically installed with the Microsoft Windows 7 and Windows 8 operating systems, bundled with .NET 3.0, and is available as an optional download for Windows XP users.