comp.graphics.apps.alias

         Type: VRML
    Extension: sdml
      Version: 
  Compression:
  Color Depth:
   Maintainer: Silicon Graphics
Specification: http://www.clr.toronto.edu:1080/CLRMOSAIC/SDML.html

               SDML is a spatial description language used for storing CAD and GIS data,
               such as found in Landscape Planning, Design, and Architectural databases.

               SDML currently exists in two versions: the old SDML format and the new
               (Version 1.0) format. The old format is derived from the ASCII-based format
               used in the Silicon Graphics CLRview and PolyTRIM software environments. The
               new format, released in 05Feb95, is a more detailed, capable, and
               size-optimized revision of the old SDML and supports all the features of the
               Silicon Graphics CLRMosaic software.

         Type: General data format
    Extension:
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   Maintainer: 
Specification: SDTS is a standard (FIPS 173) format used for the storage and interchange
               of gelogical data.

               SDTS documentation and files are available from:

               ftp://sdts.er.usgs.gov/pub/sdts/www/html/sdts.html

         Type: 
    Extension:
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   Maintainer: 
Specification: SGI is the native file format of the limage image library found on Silicon
               Graphics workstations. The limage library provides a set of functions used
               to read and write SGI images.

               The SGI file format is a creation of Paul Haeberli (paul@sgi.com) at Silicon
               Graphics Computer Systems. The SGI format specification may be found at:
               ftp://ftp.sgi.com/graphics/SGIIMAGESPEC
 
               The SGI format is also known as the RGB file format.

         Type: Bitmap
    Extension: SHG
      Version: 
  Compression: None, RLE
  Color Depth:
   Maintainer: Microsoft Corporation
Specification: ftp://ftp.microsoft.com/developr/drg/Multimedia/SHED.ZIP

               SHG is a file format used by Microsoft in the WinHelp on-line help facility
               found in Windows 3.1. This format is used to save a Microsoft Bitmap (BMP) or
               Windows Metafile (WMF) graphic and store the coordinates of specific areas of
               the bitmap known as "hotspots".  When the bitmap is displayed and the user
               selects a hotspot, WinHelp jumps to another part of the help documentation
               via a hyper-text link macro stored in the SHG file.

         Type: 
    Extension: 
      Version: 
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   Maintainer: 
Specification:
               SOFTIMAGE Users Home Page
               SOFTIMAGE Official Home Page
               http://softimage.co.uk/

               comp.graphics.apps.softimage

         Type: Bitmap
    Extension: JPG, SPF
      Version: 
  Compression: None, JPEG, JBIG, Modified Huffman, MR, MMR
  Color Depth:
   Maintainer: ITU and ISO
Specification: http://www.itu.doc/

               The "official" JPEG file format. Part 3 of the JPEG standard now includes a
               fully defined file format to storing JPEG data. 

               When the JPEG format was standardized, disagreements among ISO committees
               prevented a standard JPEG file format from being created. The defacto format
               that appeared was JFIF from C-cube Microsystems. The JFIF format, although
               now quite wide-spread, is very limited in capability as file formats go.

               SPIFF is intended to replace the JFIF file format, adding features (more
               colorspaces, a recognized way of including text blocks, and so forth),
               and provding a backwards-compatability allowing SPIFF files to be read my
               most JPEG/JFIF decoders. JFIF, however, has a five-year head start on SPIFF,
               so the likelyhood of it being completely replaced anytime soon is not good.

         Type: 
    Extension:
      Version: 
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   Maintainer: 
Specification: STL files are the native file format of the SLA CAD software created by 3D
               Systems of Valencia, CA, USA. STL files may be ASCII or binary in form,
               although binary is far more common due to the very large resulting size of
               the CAD data when saved to the ASCII format.

         Type: 3D    
    Extension: IFF
      Version: 
  Compression: 
  Color Depth: 
   Maintainer: 
Specification: http://www.mediatel.lu/mmedia/render/h_imagine1.html

               TDDD (3D Data Description) is used by Impulse's Imagine 3.0 for 3D rendering data.
               TDDD files contain 3D object definitions and can be extended to describe different
               types of object information. TDDD data is stored as FORM TDDD chunks using the
               Amiga and Electrnic Arts Interchange File Format (IFF).

               Imagine 3.0 also supports a Texture File Format stored as a FORM TFORM chunk
               in an IFF file. The spec for this format may be found at:
               http://www.mediatel.lu/mmedia/render/h_imagine2.html

         Type: Bitmap
    Extension: TGA
      Version: 
  Compression: None, RLE
  Color Depth: 1- to 32-bits (8, 16, 24, and 32 typical)
   Maintainer: Truevision Inc.
Specification: The TGA format is one of the most widely used bitmap file formats for
               storage of 24- and 32-bit truecolor images.  TGA supports colomaps,
               alpha channel, gamma value, postage stamp image, textual information,
               and developer-definable data.

               Copies of the TGA specification, including a sample code disk, may be
               obtained from  Truevision.

         Type: Bitmap
    Extension: tif, TIFF
      Version: 6.0
  Compression: Uncompressed, PackBits RLE, LZW, JPEG, CCITT Group 3 & 4
  Color Depth: 
   Maintainer: Adobe Systems
Specification: The TIFF format was formerly owned and maintained by the Aldus Developer's
               Association. Aldus has since merged with Adobe Systems and now the Adobe 
               Developers Association (ADA) maintains the TIFF file format. You may obtain a
               copy of the TIFF 6.0 specification in PDF format at:

               http://www.adobe.com/Support/TechNotes.html#tiff
               http://www.adobe.com/PDFs/TN/TIFF6.pdf

         Type: 
    Extension:
      Version: 
  Compression:
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   Maintainer: 
Specification: TRIF was developed by the Tiling Task Group at the National Institute 
               for the interchange of tiled raster data. TRIF is very similar to the
               CALS Type II raster format and shares many of the same standards documents.

         Type: 
    Extension:
      Version: 
  Compression:
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   Maintainer: 
Specification: The TrueType font file format was created by Apple Computer and is used on
               the Macintosh and Microsoft Windows 3 operating environments. TTF files may
               be sent to a PostScript interpreter by first converting them to Adobe Type 42
               font files.

         Type: 
    Extension:
      Version: 
  Compression:
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   Maintainer: Adobe Systems
Specification: Type 42 is a PostScript font format used to download TrueType fonts to
               PostScript interpreters which contain a TrueType rasterizer. A TrueType font
               is first converted to a Type 42 format font and then read by a PostScript
               interpreter. Type 42 yields better result than if a TrueType font is
               converted to the Adobe Type 1 or Type 3 font formats.

         Type: 
    Extension:
      Version: 
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   Maintainer: 
Specification: URT is the native raster file format of the Utah Raster Toolkit. This
               toolkit, which first appeared in 1983, is a rich source of bitmap
               manipulation tools and source code. The toolkit is copyrighted, but
               distributable on a GNU-like license.

         Type: 
    Extension:
      Version: 
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   Maintainer: Superscape &lthttp://www.superscape.com&gt
Specification:

         Type: General data format
    Extension:
      Version: 
  Compression:
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   Maintainer: NASA
Specification: http://www-mipl.jpl.nasa.gov
/vic_file_fmt.html

               The VICAR and VICAR2 formats are used to store planetary image data
               gathered from Earth and by spacecraft, and are similar in design and
               use to the FITS and PDS formats. VICAR is actually a collection of 
               image processing programs used to analyze image data stored using the
               VICAR data format.

         Type: 
    Extension:
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   Maintainer: 
Specification: VIFF is the native bitmap graphics file format of the Khoros System
               environment implemented using the X Window System.

               The VIFF format specification, including other documents related to the VIFF
               format, may be found in the Khoros distribution. Chapter 1 of Volume II,
               Programmer's Manual, the files in the directory src/file_formats, and the
               viff.h file are the most helpful.

               The following FTP sites archive the Khoros distribution:
               ftp://ftp.eece.unm.edu/pub/khoros
               ftp://ftp.uu.net/pub/window-sys/khoros

         Type: 
    Extension:
      Version: 
  Compression:
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   Maintainer: 
Specification: VPF is a standard format, structure, and organization for large geographic
               databases that are based on a georelational data model. VPF is primarily used
               for organizing and encapsulating such digital geographic databases for
               transmission.  More information on VPF may be found in the newsgroup and FAQ
               of comp.infosystems.gis.

         Type: VRML
    Extension: oogl
      Version: 
  Compression:
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   Maintainer: 
Specification: http://www.geom.umn.edu/docs/weboogl/weboogl.html

               WebOOGL is a OOGL-based format used for describing 3D graphics on the World
               Wide Web. This format supports the embedding of URL links within 3D objects
               and allows multiple WebOOGL objects found at different locations on the Web
               to be combined into a single scene.

               Additional information om the use of OOGL as a VRML may be obtained from:
               http://vrml.wired.com/proposals/oogl.html

         Type: Metafile
    Extension: WMF
      Version: 
  Compression: None
  Color Depth:
   Maintainer: Microsoft Corporation
Specification: WMF is the native vector file format for the Microsoft Windows operating
               environment. WMF files are actually a collection of GDI (Graphics Device
               Interface) function calls also native to the Windows environment. When a WMF
               file is "played back" (typically using the Windows PlayMetaFile() function)
               the graphics is rendered. WMF files are device-independant and have no limit
               to their size.

         Type: Metafile
    Extension: wpg
      Version: 
  Compression:
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   Maintainer: 
Specification: WPG is the native graphics file format of the WordPerfect Corporation line
               of software products. For this reason it is common to find WPG files in
               MS-DOS, Microsoft Windows, Apple Macintosh, and Unix environments.

               WPG files may store bitmapped or vector graphics data, or Encapsulated
               PostScript data as well. Bitmapped data may be up to 24-bits deep and
               selectable from a palette of 256 colors. 

         Type: 
    Extension:
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   Maintainer: 
Specification: XBM is a native file format of The X Window System and is used for storing
               cursor and icon bitmaps that are used in the X GUI. XBM files are quite
               different in that they are actually C language source files that are
               created to be read by a C compiler rather than a graphical display
               program.

               XBM data is typically found in headers (.h files) and are a series of
               static unsigned char arrays containing the monochrome pixel data. There is
               one array per image stored in the header.

               XBM was created by the X Consortium as part of the X Window System. Refer
               to the /bitmaps directory of the X Window distribution for examples of XBM
               files. The central FTP distribution site for X version 11 is:
               ftp://ftp.x.org

         Type: 3D
    Extension:
      Version: 
  Compression:
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   Maintainer: 
Specification: RenderMorphics created the 3D renderer Reality Lab.
               RenderMorphics was aquired by Microsoft in February 1995.
               RealityLab is now a core component of Windows95.

         Type: 
    Extension:
      Version: 
  Compression:
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   Maintainer: 
Specification: XPM is a defacto standard for storing monochome, gray-scale, and color
               pixmap data to disk under the X Window system. XPM files, like XBM files,
               are C source code files, with each pixmap being defined as a static char
               array.

         Type: Bitmap
    Extension: .xwd
      Version: 
  Compression: None
  Color Depth: Unlimited
   Maintainer: X Consortium
Specification: ftp://ftp.x.org/

               XWD is used to store screen dumps created by the xwd client process in the
               X Window System. The image of any window or the background may be saved
               (dumped) to an XWD file.

         Type: Bitmap
    Extension: .wsq
      Version: 
  Compression: Wavelet
  Color Depth: 1-bit
   Maintainer: Los Alamos
Specification: ftp://ftp.c3.lanl.gov/pub/WSQ/documents/wsqSpec2.ps.Z