Dealing with dxf

[quattrocchi]

Does Visio import/export the vector filetype .dxf?

DXF is an AutoCAD drawing exchange format.
A text representation of the dwg.

I need this format for use with a cnc machine. I see from some earlier comments
(via google group search) that exporting dxf files produces some unwanted
characteristics, like other vector apps such as AutoCAD can view but cannot edit
them.

Has this been improved recently?

Thanks