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000
Data file (GEOWorks)
000-20009
Used to number old (backup) versions of files
(for example, CONFIG.SYS when changed by
an installation program); also used to number
related data files for multiple users of a
small-scale PC application
001-999
Database index files used by (Superbase)
113
Backup data file (Iomega Backup)
12M
Smartmaster file (Lotus 1-2-3 '97)
123
Lotus 123 97 file
1-STEP
Backup file (Iomega Backup)
2D
Two-dimensional drawing file (VersaCAD)
http://www.versacad.com/vcadhome.htm
2GR and 3GR
VGA Graphics driver/configuration files
(Microsoft Windows)
3D
Three-dimensional drawing file (VersaCAD)
http://www.versacad.com/vcadhome.htm
3DM
3D NURBS modeler, (Rhino)
3DS
A file in 3D Studio (for DOS) format
386
A file for use in an 80386 or higher
microprocessor
411
Data file (Used by digital cameras)
4GE
Compiled code (Informix 4GL)
4GL
Source code (Informix 4GL)
4V
Music file (Quartet)
669
Music mod file (Composer 669)(Unis
Composer)
669
Tracker module (Composer 669)
#01 and
higher
A method of numbering picture files for a roll
of film that has been scanned for computer
presentation
$$$
Used by OS/2 to keep track of archived files
~PR
Project backup file (Terramodel)
~$~
Temporary file (1ST Reader)
~AP
AppExpert project database file (Borland C++
4.5)
~DE
Project backup file (Borland C++ 4.5)
~MN
Menu backup (Norton Commander)
@@@
Screen files used in the installation and
instruction on use of such applications as
Microsoft Codeview for C