Type: 
    Extension:
      Version: 
  Compression:
  Color Depth:
   Maintainer: U.S. Geological Survey (USGS)
Specification: The format of DEM map files is described in the publication:
                  Data Users Guide 5 - Digital Elevation Models

         Type: 3D
    Extension: dkb
      Version: 
  Compression:
  Color Depth:
   Maintainer: 
Specification:

         Type: Vector
    Extension: dlg
      Version: 
  Compression:
  Color Depth:
   Maintainer: U.S. Geological Survey (USGS)
Specification: DLG is used by USGS to store geographical data. Documentation on 
               this format is available at:
               ftp://spectrum.xerox.com/depts/markc/demtools/demwork/dlg/doc/dlgguide.txt.Z>.

         Type: Bitmap
    Extension: dpx, cin
      Version: 
  Compression:
  Color Depth:
   Maintainer: SMPTE <http://www.smpte.org/>
Specification: DPX is the SMPTE (Society of Motion Picture and Television Engineers)
               standard file format for Digital Moving Picture Exchange. DPX is, in 
               fact, the Kodak Cineon raster file format with just a few slight 
               modifications to the file's header.

         Type: 
    Extension:
      Version: 
  Compression:
  Color Depth:
   Maintainer: 
Specification:
               Contact Coryphaeus at:
                 Coryphaeus
                 985 University Avenue
                 Suite 31
                 Los Gatos, CA 95030 USA
                 Voice: 408.395.4537
                   Fax:   408.395.6351
                 Email: sales@coryphaeus.com
                   WWW:   http://www.coryphaeus.com/

         Type: 
    Extension:
      Version: 
  Compression:
  Color Depth:
   Maintainer: Autodesk
Specification: http://www.kovac.com/software/index.html

         Type: Vector and 3D
    Extension: DXF
      Version: 
  Compression: None
  Color Depth:
   Maintainer: Autodesk
Specification: The AutoCAD DXF (Drawing eXchange Format) and AutoCAD DXB (Drawing 
               eXhange Binary) formats are the native vector file formats of 
               Autodesk's AutoCAD CAD application.

               DXF is probably one of the most widely supported vector formats in 
               the world today. DXF is rich in features, including: support for 3D 
               objects, curves, text, associative dimensioning, and is an easy format 
               to parse. The DXB format is a binary representation of a DXF file and 
               they are usually smaller and faster to load than the equivalent DXF file.

               The latest "official" DXF revision is Release 12. However, there is an
               even newer version of DXF containing several changes and additions to 
               the format.  Apparently the specification of the latest version of the 
               DXF format is not yet (if it will ever be) freely available. Users are
               required to pay $4000US for a license to AutoCAD in to obtain the specs
               for this newest release of DXF file format.

               The official specification for DXF R12 may be found in the AutoCAD 
               Manual Release 12:

                 AutoCAD Customization Manual, Release 12, Autodesk Inc., 1992, 
                 pp. 241-81.

               The specification for DXF R12 has also been released in electonic 
               form and is available in several of the Internet file format archives, 
               such as:

                 ftp://avalon.vislab.navy.mil/pub/format_specs/dxf_r12.txt.Z
                 http://www.mediatel.lu/mmedia/render/h_dxf12.html

               The spec for the most current version, DXF R13, is available at:

                 ftp://ftp.synapse.net/private/c/cadsyst/misc/r13dxf.zip

               And an excerpt of the DXF R10 specification may be found at:

                 http://www.mediatel.lu/mmedia/render/h_dxf10.html

               Many books detail the DXF format, including:

                 The AutoCAD Database Book, F.H. Jones and L. Martin, Ventana Press,
                   ISBN 0-940087-04-9. Order: 919.490.0062 voice.

                 AutoCAD, The Complete Reference, 2nd Ed., Johnson, N., McGraw-Hill,
                   New York, NY, 1991.

               Additonal information may be obtained directly from Autodesk.

         Type: Metafile
    Extension: EMF
      Version: 
  Compression: None
  Color Depth:
   Maintainer: Microsoft Corporation
Specification: The next generation Windows Metafile. EMF files are not supported 
               by the 16-bit Windows and OLE environments.

               http://www.microsoft.com/Softlib/MSLFILES/ENMETA.EXE
                 This archive contains sample Windows code to manipulate EMF files.
                 Two sample EMF files are included.

               http://www.microsoft.com/developr/MSDN/OctCD/EMFDCO.ZIP
                 This archive contains the Windows source code for the EMF 
                 decoding utility.

               http://www.microsoft.com/developr/MSDN/OctCD/ENHMET.ZIP
                 This archive contains the ENHMETA.HLP help file that describes
                 the EMF file format.

         Type: Metafile
    Extension: EPS
      Version: 
  Compression:
  Color Depth:
   Maintainer: 
Specification: The PostScript Language Software Development Kit is available from 
               the creator of PostScript, Adobe Systems.

         Type: 
    Extension:
      Version: 
  Compression:
  Color Depth:
   Maintainer: 
Specification: FBM is the native file format of the Fuzzy pixmap image manipulation 
               and conversion toolkit written by Michael L. Mauldin at Carnegie 
               Mellon University.

               Code to manipulate FBM (and many other) file formats is found in the
               FBM distrbution:
               ftp://nl.cs.cmu.edu/usr/mlm/ftp/fbm.tar.Z

          Type: VRML
     Extension: ffivw
       Version: 
  Compression:
   Color Depth:
    Maintainer: Bernie Roehl <broehl@waterloo.ca>
                Kerry Bonin <74367.1630@compuserve.com>
 Specification: http://vrml.wired.com/proposals/ffivw.html

                FFIVM is an ASCII-based, object-oriented format used to describe 
                virtual objects and worlds. This format is not intended to be a 
                native file format of any hardware or software platform, but instead 
                to be used as an interchange medium used for converting one VRML 
                format to another.

         Type: General data format
    Extension:
      Version: 
  Compression:
  Color Depth:
   Maintainer: 
Specification: FITS is a standard data interchange and archival format used by
               astronomy software. The FITS data format specification is part 
               of the NOST Standard and Uer's Guide, available from:

               ftp://nssdc.gsfc.nasa.gov/pub/fits/

         Type: 
    Extension: flt
      Version: 14.2.4 Rev A
  Compression:
  Color Depth:
   Maintainer: 
Specification: http://www.mediatel.lu/mmedia/render/files/opnflt.pdf

         Type: 
    Extension:
      Version: 
  Compression:
  Color Depth:
   Maintainer: 
Specification: GIF is a data stream-oriented file format used to define the 
               transmission protocol of LZW-encoded bitmap data. GIF images may 
               be up to eight bits (256 colors) in depth and are always compressed. 
               Despite the fact that GIF supports only 8-bits worth of colors, and 
               the multimedia extensions introduced in the 89a release have not 
               been widely utilized, GIF still remains a popular choice for storing 
               lower resolution image data.

               The GIF89a specification is available via many BBSs and on-line 
               information services. You may also obtain the specification directly 
               from CompuServe.

         Type: 
    Extension:
      Version: 
  Compression:
  Color Depth:
   Maintainer: 
Specification: GKS is a standard specifying the input and output primitives for 
               displaying 2D and 3D graphical data. Although GKS has no native 
               file format, the CGM (Computer Graphics Metafile) format is often 
               closely associated with its use.

         Type: Metafile
    Extension:
      Version: 
  Compression:
  Color Depth:
   Maintainer: 
Specification: http://grads.iges.org/grads/
               Grid Analysis and Display System

               ftp://sprite.llnl.gov/pub/fiorino/grads/doc/grads.www/grads.htm
               GrADS Documentation

         Type: 
    Extension:
      Version: 
  Compression:
  Color Depth:
   Maintainer: 
Specification:
               Paul Mace Software Home Page
               http://www.pmace.com/pms.htm

         Type: General data format
    Extension:
      Version: 
  Compression:
  Color Depth:
   Maintainer: World Meteorological Organization (WMO)
Specification: GRIB is the standard format for the storage and interchange of
               meteorological data. Several "flavors" of GRIB exist, prompting the
               original format to be called WMO GRIB. The format specification and
               software may be found at:

               ftp://ncardata.ucar.edu/libraries/grib/
               ftp://nic.fb4.noaa.gov/pub/nws/nmc/docs/gribguide/guide.txt
               ftp://ncardata.ucar.edu/libraries/grib/
               ftp://nic.fb4.noaa.gov/pub/nws/nmc/docs/gribguide/guide.txt

         Type: 
    Extension:
      Version: 
  Compression:
  Color Depth:
   Maintainer: 
Specification: http://www.mediatel.lu/mmedia/render/files/ncsa_hdf.pdf

               HDF is an object-oriented interchange file format used to transport 
               image data from one machin architecture or operating system to 
               another with no conversion problems or loss of data. Both 8- and 
               24-bit raster images are supported, color palettes, and data 
               compression (RLE, Incomp, and JPEG).

         Type: 
    Extension:
      Version: 
  Compression:
  Color Depth:
   Maintainer: 
Specification: PCL is capable of rendering both raster and vector graphics.
               The official specification and toolkit for PCL is contained in the
               Hewlett-Packard manuals.

         Type: Bitmap
    Extension: HRF
      Version: 
  Compression:
  Color Depth: 1-bit
   Maintainer: Hitachi Corporation
Specification: Chris Till (Voice: 303.449.3200, Fax: 303.449.1996)

               HRF is typically used to store scanner output data.
               The HRF specification is not available unless a non-disclosure agreement
               is signed with Hitachi.