Table A.1 lists some the file extensions and MIME content types supported by many popular Web servers. If your server does not list an extension for a particular content type, or if the type you want to use is not listed at all, you will have to add support for that type to your server configuration.
|MIME Type||File What It Is (If Noted)||Extensions|
|application/acad||AutoCAD Drawing files||dwg, DWG|
|application/drafting||MATRA Prelude drafting||DRW|
|application/dxf||DXF (AutoCAD)||dxf, DXF|
|application/i-deas||SDRC I-DEAS files||unv, UNV|
|application/iges||IGES graphics format||igs, iges, IGS, IGES ...|