File Formats: (none)
From: Jason Pratt <[email protected]> To: "'[email protected]'" <[email protected]> Subject: RE: Request for MIME media type Model/Vendor Tree - vnd.dwf Date: Wed, 13 Aug 1997 18:34:49 -0700 Name : Jason Pratt E-mail : [email protected] MIME media type name : Model MIME subtype name : Vendor Tree - vnd.dwf Required parameters : No parameters are required for this type. Optional parameters : No parameters are required for this type. Encoding considerations : This type contains three parts: a header, a body, and a terminator. The header is ASCII text that describes the file's creation date, author, filename, and other file details. The body contains the descriptions of the vector geometry, and can be either binary or ASCII text, depending on how the the file is authored. (Manually written DWF files will tend to be ASCII, software-generated DWF files will tend to be binary) The terminator is ASCII text and consists of a single EOF indicator. Security considerations : The dwf type is an ASCII and binary data stream which contains no executable code that could disrupt a client processor. There is no provision in the type specification that would allow authors to insert executable code that would present any security risk to a client machine. Interoperability considerations : The dwf type is intended to be used as a display mechanism for compressed, streamed, and scaled vector data. Dwf requires a viewer application to be useful. The viewer applications will become widely available as vendors begin to support dwf. One viewer, Autodesk WHIP!, is currently freely available. Published specification : The source code for the dwf format and its specification are freely available at www.autodesk.com. Any person or organization who wishes to publish in the dwf type has full access to the methodologies and the requirements of the type. Applications which use this media : Applications which use this media type include the world's best-selling PC CAD application, AutoCAD, as well as AutoCAD LT, Mechanical Desktop, AutoCAD Map, Autodesk View, Autodesk WHIP!, and IMSI TurboCAD. AutoCAD alone represents an installed base of 1.6 million users -- all of whom have access to publishing in the dwf type. Additional information : 1. Magic number(s) : 2. File extension(s) : dwf 3. Macintosh file type code : Further information is available upon request. Person to contact for further information : 1. Name : Jason Pratt 2. E-mail : [email protected] Intended usage : Common Author/Change controller : Autodesk, Inc.