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ABK = a Corel Draw AutoBackup
ACL = a Corel Draw 6 keyboard accelerator
ACM = used by Windows in the system directory
ACP = a Microsoft Office Assistant Preview file
ACT = a Microsoft Office Assistant Actor file
ACV = an OS/2 drivers that compress and decompress audio data
AD = an After Dark screensaver
ADB = an appointment database used by HP 100LX organizer
ADD = an OS/2 adapter drivers used in the boot process
ADM = an After Dark MultiModule screensaver
ADP = used by FaxWorks to do setup for fax modem interaction
ADR = an After Dark Randomizer screensaver; an XAIRON-Addy address manage data file
AFM = an Adobe font metrics
AF2 = an ABC Flowchart file
AF3 = an ABC Flowchart file
AI = an Adobe Illustrator drawing
AIF = an Apple Mac AIFF sound
AIFC = see AIF
AIFF = see AIF
AIS = an ACDSee Image Sequence file
ALB = a JASC Image Commander album
ALL = an Arts & Letters Library
AMS = a Velvert Studio music module (MOD) file
ANC = a Canon Computer Pattern Maker file that is a selectable list of pattern colors
ANI = an animated cursor
ANS = ANSI text
APE = a Monkey's Audio file
API = an Application Program Interface file; used by Adobe Acrobat
APR = a Lotus Approach 97 file
APS = a Microsoft Visual C++ file
ARC = a LH ARC (old version) compressed archive
ARI = an Aristotle audio file
ARJ = a Robert Jung ARJ compressed archive
ART = a Xara Studio drawing
ART = a Canon Crayola art file
ASA = a Microsoft Visual InterDev file
ASC = an ASCII text
ASD = a WinWord AutoSave
ASF = a Microsoft Advanced Streaming Format file
ASM = an Assembler language source file
ASP = an Active Server Page (an HTML file containing a Microsoft server-processed script)
ASP = a Procomm Plus setup and connection script
AST = a Claris Works "assistant" file
ASX = a Cheyenne Backup script
ASX = a Microsoft Advanced Streaming Redirector file
ATT = an AT&T Group 4 bitmap
AU = an UNIX sound file
AVI = a Microsoft Video for Windows movie
AWD = a FaxView document

BAK = a backup file
BAS = a BASIC code
BAT = a batch file
BEE = a Beeline-AIR System file
BFC = a Windows 95 Briefcase document
BG = a Backgammon for Windows game
BI = a binary file
BIF = a GroupWise initialization file
BIN = a binary file
BK and BK$ = sometimes used to denote backup versions
BKS = an IBM BookManager Read bookshelf
BMK = an A bookmark file
BMP = a Windows or OS/2 bitmap
BM1 = an Apogee BioMenace data file
BRX = a file for browsing an index of multimedia options
BSP = a Quake map
BS1 = an Apogee Blake Stone data file
BS_ = a Microsoft Bookshelf Find Menu shell extension
BTM = a batch file used by Norton Utilities
BUN = a CakeWalk Audio Bundle file
B4 = a Helix Nuts and Bolts file

C = C code
CAB = a Microsoft cabinet file
CAG = a Microsoft clip gallery catalog file; a Capella document
CAL = a CALS Compressed Bitmap; Calendar schedule data; SuperCalc file
CAP = a Ventura Publisher caption document; a Telix session capture file; a compressed music file; a Capella gallery file
CAS = a comma-delimited ASCII file
CAT = a Quicken IntelliCharge categorization file
CB = a Microsoft clean boot file
CCB = a Visual Basic Animated Button configuration
CCF = a Multimedia Viewer configuration file used in OS/2
CCH = a Corel Chart
CCM = a Lotus CC:Mail "box"
CCO = a CyberChat data file
CCT = a Macromedia Director Shockwave cast
CDA = a CD Audio Track
CDF = a Microsoft channel definition format file
CDI = a Phillips compact disk interactive format
CDR = a CorelDRAW drawing
CDT = a CorelDRAW template
CDX = a CorelDRAW compressed drawing
CEL = a CIMFast event language file
CER = a certificate file
CFB = a Comptons Multimedia file
CFG = a Configuration file
CGI = a Common Gateway Interface script file
CGM = a computer graphics metafile
CH = an OS/2 configuration file
CHK = file fragments saved by Windows Disk Defragmenter or ScanDisk
CHM = a Compiled HTML file
CHP = a Corel VENTURA chapter
CHT = a ChartViewer file
CHT = a Harvard Graphics vector file
CIL = a Clip Gallery download package
CIM = a Sim City 2000 file
CIN = an OS/2 change control file that tracks changes to an INI file
CK1 = an iD/Apogee Commander Keen 1 data file
CK2 = an iD/Apogee Commander Keen 2 data file
CK3 = an iD/Apogee Commander Keen 3 data file
CK4 = an iD/Apogee Commander Keen 4 data file
CK5 = an iD/Apogee Commander Keen 5 data file
CK6 = an iD/Apogee Commander Keen 6 data file
CLASS = a Java class
CLP = a Windows clipboard file
CLS = a Visual Basic class module
CMD = a command file for Windows NT
CMD = a DOS CP/M command file
CMD = a dBase-II program file
CMF = a Corel metafile
CMP = a JPEG bitmap
CMP = an address document
CMV = Corel Move animation
CMX = a Corel Presentation Exchange image
CNF = a configuration file
CNM = a Windows application menu options and setup file
CNQ = a Compuworks Design Shop file
CNT = a Windows (or other) system content files for the help index and other purposes
COB = a trueSpace2 object
COD = Microsoft C compiler output
COM = a Command file (program)
CPD = a Fax Cover document
CPE = a Fax Cover document
CPI = a Microsoft MS-DOS code page information file
CPL = a Control Panel extension
CPL = a Corel colour palette
CPP = a C++ code
CPR = a Corel Presents presentation
CPT = a Corel Photo-Paint image
CPX = a Corel Presentation Exchange Compressed drawing
CRD = a Cardfile file
CRP = a Corel Presents run-time presentation
CRT = a Certificate file
CSC = a Corel Script
CSP = a PC Emcee On-Screen image
CSS = a Cascading Style Sheet file (MIME)
CST = a Macromedia Director "cast" file
CSV = a Comma-separated values file
CT = a Scitex CT bitmap
CT = a graphic file associated with the Paint Shop Pro Graphic Editor
CTL = in general, control information; FAXWorks' send & receiveinformation
CUE = a Microsoft Cue Cards data
CUR = a Windows Cursor
CUT = a Dr. Halo bitmap
CV = a Corel Versions archive; Microsoft CodeView information screen
CWK = a Claris Works data file
CWS = a Claris Works template
CXT = a Macromedia Director protected "cast" file
CXX = a C++ source code file

DAT = a data file
DAT = a WordPerfect Merge Data file
DBF = an Aston-Tate dBASE database
DBX = a DataBeam image
DCF = a Dyalog component file
DCR = a Shockwave file
DCS = a Desktop Color Separation file
DCX = a Fax image
DDF = a BTRIEVE database
DEF = a SmartWare II data file
DEF = a C++ definition
DER = a Certificate file
DGM = a Digital Geospatial Metadata file
DIB = a Device-Independent Bitmap file
DIC = a dictionary file
DIF = a Data Interchange Format spreadsheet file
DIR = a Macromedia Director file
DIZ = a description file
DLG = a C++ Dialogue Script
DLL = a Dynamic-Link library
DMF = an X-Trakker music module (MOD) file
DOC = a document file
DOT = a Microsoft Word document template
DPR = a Borland Delphi project header file
DRV = a driver file
DRW = a Micrografx Designer/Draw file
DRY = an XAIRON organizer diary file
DSE = a Dyalog session file
DSF = a Micrografx Designer version 6 or 7 file
DSG = a DooM saved game
DSM = a Dynamic Studio music module (MOD) file
DSP = a Microsoft Developer Studio project
DSQ = a Corel query file
DSW = a Microsoft Developer Studio workspace
DS4 = a Micrografx Designer image
DTF = a Symantec Q&A relational database data file
DUN = a Microsoft Dial-up Networking export file
DV = a Digital video file
DWD = a DiamondWare digitized file; a Datawrite file
DWG = a AutoCAD drawing, or older Generic CADD drawing format
DWS = a Dyalog workspace
DWT = a Macromedia Dreamweaver template file
DXF = a Drawing Interchange (eXchange); a text representation of the binary DWG
DXR = a Macromedia Director protected movie file

EMF = an Enhanced Windows Metafile
EML = a Microsoft Outlook Express mail message
ENC = an Encore file
EPS = an Encapsulated PostScript image
ER1 = an ERWin file
ERX = an ERWin file
EVY = an Envoy document
EWL = a Microsoft Encarta document
EXC = a Microsoft Word Exclusion Dictionary
EXE = an Executable file or program
F = a FORTRAN file
F77 = a FORTRAN file
F90 = a FORTRAN file
FAR = a Farandole Composer music module (MOD) file
FAV = a Microsoft Outlook navigation bar
FAX = a FAX Type image
FCL = a Cyber Audio Library link file
FDF = an Adobe Acrobat Forms Document file; compiled Formdef or Pagedef
FH3 = an Aldus Freehand 3 drawing
FIF = a Fractal image file
FITS = a CCD camera image
FLC = an AutoDesk FLIC animation
FLI = an AutoDesk FLIC animation
FLT = a Corel filter
FMB = an Oracle binary source code for form, version 4.0 and later
FML = a File Mirror List (GetRight)
FMT = an Oracle text format of form; Microsoft Schedule+ print file
FMX = an Oracle executable form
FND = a Microsoft Explorer Saved Search file
FNG = a Font group file
FOG = a Fontographer font
FON = a System font
FOR = a FORTRAN file
FOT = a Font-related file
FP = a FileMaker Pro file
FPX = a FlashPix bitmap
FRM = a form file
FRX = a Visual Basic form stash file
FTS = a Full-Text Search index file
FW3 = a Framework III file
FW4 = a Framework IV file

GAL = a Corel Multimedia Manager album
GCD = a Generic CADD drawing
GCP = a Ground Control Point file
GED = a Graphic Environment Document
GEM = a GEM metafile
GEN = a Ventura-Generated text file
GFC = a Patton&Patton Flowcharting 4 flowchart file
GFI = a Genigraphics Graphics Link presentation
GFX = a Genigraphics Graphics Link presentation
GID = a Windows 95 global index file
GIF = a CompuServe bitmap
GIM = a Genigraphics Graphics Link presentation
GIX = a Genigraphics Graphics Link presentation
GKS = a Gravis GripKey document
GNA = a Genigraphics Graphics Link presentation
GNX = a Genigraphics Graphics Link presentation
GRA = a graphics document
GRD = a Grid file
GRP = a Program Manager Group
GTK = a Graoumftracker (old) music module (MOD) file
GT2 = a Graoumftracker (new) music module (MOD) file
GWX = a Genigraphics Graphics Link presentation
GWZ = a Genigraphics Graphics Link presentation
GZ = an Unix Gzip compressed file

H = a C program header
HED = a HighEdit document
HEL = a Microsoft Hellbender saved game
HEX = a Macintosh BinHex 2.0 file
HGL = a HP Graphics Language drawing
HLP = a Help file
HOG = a Lucas Arts Dark Forces WAD file
HPJ = a Visual Basic Help Project
HPP = a C++ program header
HQX = an Apple Macintosh BinHex 4.0 file
HST = a History file
HT = a HyperTerminal
HTM = a Hypertext document
HTML = a Hypertext document
HTT = a Microsoft Hypertext Template
HTX = an Extended HTML template

ICA = a Citrix file
ICB = a Targa bitmap
ICL = an icon library file
ICM = an Image Color Matching profile file
ICO = a Windows Icon
IDD = a MIDI Instrument Definition
IDF = a MIDI Instrument Definition
IDQ = an Internet Data Query file
IDX = a Symantec Q&A relational database index file
IEM = an Informix error message
IFF = an Amiga ILBM
IGF = an Inset Systems metafile
IIF = a QuickBooks for Windows interchange file
ILBM = a bitmap file
IMA = a WinImage file
IMG = a GEM image
INC = an Assembler language or Active Server include file
INDD = an Adobe Indesign document
INF = an information file
INI = an initialization file
INP = Oracle source code for form
INS = an InstallShield install script
INS = an X-Internet sign-up file
IOF = a Findit document
IQY = a Microsoft Internet Inquiry file
ISP = an X-Internet sign-up file
ISU = an InstallShield uninstall script
IT = an Impulse Tracker music module (MOD) file
ITS = an Internet document set
IW = an Idlewild screensaver

JAR = a Java ARchive file
JAVA = a Java source code
JBF = a Paint Shop Pro image browser file
JFF = a JPEG file
JIF = a JPEG file
JFIF = a JPEG file
JMP = a SAS JMPDiscovery chart-to-statistics file
JN1 = an Epic MegaGames Jill of the Jungle data file
JPE = a JPEG file
JPEG = a JPEG compressed bitmap
JPG = a JPEG bitmap
JS = a JavaScript source code
JTF = a JPEG bitmap

KDC = a Kodak Photo-Enhancer file
KFX = a KoFax Group 4 image
KYE = a Kye game data file

LBM = a Deluxe Paint bitmap
LDB = a Microsoft Access lock file
LEG = a Legacy document
LES = a Logitech Entertainment system game profiles
LHA = an alternate file suffix for LZH
LIB = a library file
LIS = a list file produced by a Structured Query Reporting (SQR) program
LIV = a LiveMotions file
LNK = a Windows shortcut file
LOG = a log file
LPD = a Helix Nuts and Bolts file
LPJ = a PASSOLO localization project
LPU = a PASSOLO localization project (UNICODE)
LRC = an Intel Video Phone file
LST = a list file
LWO = a Lightwave Object file
LWP = a Lotus Wordpro 96/97 file
LZH = an LH ARC compressed archive
LZS = a Skyroads data file

M1V = a MPEG-related file
M3D = a Corel Motion 3D animation
MAC = a MacPaint image
MAD = a Microsoft Access module
MAF = a Microsoft Access Form
MAK = a Visual Basic or MS Visual C++ Project
MAM = a Microsoft Access Macro
MAP = a Map file; Duke Nukem 3D WAD game file
MAQ = a Microsoft Access Query
MAR = a Microsoft Access Report
MAS = a Lotus Freelance Graphics Smartmaster file
MAT = a Microsoft Access Table
MAX = a Paperport or 3d Studio Max file
MAZ = a Hover maze data
MB1 = an Apogee Monster Bash data file
MCC = a Dialer10 calling card
MCS = a MathCAD image
MCW = a Microsoft Word for Macintosh document
MC1 = a MedCalc data file
MDA = a Microsoft Access add-in
MDB = a Microsoft Access database
MDE = a Microsoft Access MDE file
MDL = a Digital Tracker music module (MOD) file; a Quake model file
MDN = a Microsoft Access blank database template
MDW = a Microsoft Access Workgroup
MDZ = aMicrosoft Access wizard template
MED = a Music Editor, OctaMED music module (MOD) file
MER = a format for interchanging spreadsheet and database data
MET = a Presentation Manager metafile
MHTM = a MHTML document
MHTML = a MHTML document
MI = Miscellaneous
MIC = a Microsoft Image Composer file
MID = a MIDI music
MMF = a Microsoft Mail File
MMM = a Microsoft Multimedia Movie
MOD = a music module file; a Microsoft Multiplan spreadsheet
MOV = a QuickTime for Windows movie
MPA = a MPEG-related file
MPE = a MPEG animation
MPEG = a MPEG animation
MPG = a MPEG animation
MPP = a Microsoft Project file
MPP = a CAD drawing file format
MP2 = a MPEG Audio Layer 2 file
MP3 = a MPEG Audio Layer 3 (AC3) file
MSG = a Microsoft Mail message
MSN = a Microsoft Network document
MSP = a Microsoft Paint bitmap
MTM = a MultiTracker music module (MOD) file
MUS = a Music file format
MVB = a Microsoft Multimedia Viewer file
MWP = a Lotus Wordpro 97 Smartmaster file

NAP = a NAP Metafile
NCB = a Microsoft Developer Studio file
NIL = a Norton Icon Library file
NLU = a Norton Live Update E-Mail Trigger file
NSF = a Lotus Notes database
NST = a Noise Tracker music module (MOD) file
NTF = a Lotus Notes database template
NWS = a Microsoft OutlookExpress news message

OBD = a Microsoft Office binder template
OBJ = an object file
OBZ = a Microsoft Office Binder Wizard
OCX = a Microsoft Object Linking and Embedding custom control
OFN = a Microsoft Office FileNew file
OFT = a Microsoft Outlook template
OGL = Overlay source code
OKT = an Oktalyzer music module (MOD) file
OLB = an OLE Object Library
OLE = an OLE object
OMN = an Omni database file
OPT = a Microsoft Developer Studio file
OPX = a Microsoft Windows Organization Chart or Psion Organizer Programming Language file
ORG = a Lotus Organizer file
OR2 = a Lotus Organizer 2 file
OR3 = a Lotus Organizer 97 file
OSS = a Microsoft Office Search file
OST = a Microsoft Exchange Offline file
OTL = a Super NoteTab template file
OVL = compiled Overlay

P10 = a Tektronix Plot 10 file
P65 = a Pagemaker 6.5 file
P7C = a Digital ID file
PAB = a Microsoft Personal Address Book
PAK = a Quake WAD file
PAL = a Windows colour palette
PAS = Pascal source code
PAT = a Corel Draw pattern
PCP = a Symantec Live Update Pro file
PBK = a Microsoft Phonebook
PBMv = a Portable Bitmap file
PCD = a Kodak Photo-CD image; P-Code compiled test scripts
PCL = a HP Laserjet bitmap
PCS = a PICS animation
PCT = a Macintosh PICT document
PCX = a ZSoft PC Paintbrush bitmap file
PDF = an Adobe Acrobat Portable document format; a Netware Printer definition file; a Microsoft Package definition file
PDB = a 3Com Palmpilot database file
PDQ = a Patton & Patton Flowcharting PDQ Lite file
PFA = a Type 1 font (ASCII); Formdef or Pagedef source code
PFB = a Type 1 font (binary)
PFC = a PF Component file
PFM = a Printer Font Metrics file
PFP = a Panorama Factory project file
PGL = a HP Plotter drawing
PGM = a Portable Graymap
PIC = a PC Paint bitmap; Lotus picture; a Macintosh PICT document
PICT = a Macintosh PICT image file
PIF = a Program Information File; an IBM PIF document
PIG = a Lucas Arts Dark Forces WAD file
PIN = an Epic Pinball data file
PIX = an Inset Systems bitmap
PJ = a MKS Source Integrity file
PKG = a Microsoft Developer Studio application extension
PL = a Perl program
PLS = a MPEG PLayList file
PLT = a HPGL Plotter drawing; an AutoCAD Plot file
PMD = a Pagemaker 7.0 file
PM5 = a Pagemaker 5.0 file
PM6 = a Pagemaker 6.0 file
PNG = a Portable Network Graphics bitmap
PNG = a Paint Shop Pro Browser catalogue
PNT = a MacPaint document
PNTG = same as PNT
PP4 = a Picture Publisher 4 bitmap
PPA = a Microsoft PowerPoint Add-in
PPM = a Portable Pixelmap bitmap
PPS = a Microsoft PowerPoint slide show
PPT = a Microsoft PowerPoint presentation
PRC = a 3Com Palmpilot resource (text or program) file
PRE = a Lotus Freelance presentation
PRF = a Windows system file; a Macromedia Director settings file; a plot reference file
PRN = a Print Table
PRS = a Harvard Graphics for Windows presentation
PRT = a print-formatted file
PRZ = a Lotus Freelance Graphics 97 file
PS = a Postscript Interpreted drawing
PSD = an Adobe Photoshop bitmap
PSP = a Paint Shop Pro file
PST = a Microsoft Outlook Personal folder file
PTM = a Polytracker music module (MOD) file
PUB = a Ventura Publisher publication; a Microsoft Publisher document
PWD = a Microsoft Pocket Word document
PWZ = a Microsoft PowerPoint Wizard file
PXL = a Microsoft Pocket Excel spreadsheet

QAD = a PF QuickArt document
QBW = a QuickBooks for Windows file
QDT = a QuickBooks data file
QIC = a Microsoft Backup file
QIF = a QuickTime-related image
QLB = a Quick Library
QPW = a Quattro Pro file
QRY = a Microsoft Query
QST = a Quake Spy Tab file
QT = a QuickTime Movie
QTI = a QuickTime-related image
QTIF = a QuickTime-related image
QTM = a QuickTime Movie
QTP = a QuickTime Preferences file
QTS = a Macintosh PICT image file
QTX = a QuickTime-related image
QXD = a Quark XPress file

R = a Pegasus Mail resource file
RA = a Real Audio sound
RAM = a Real Audio sound
RAR = a RAR-compressed archive
RAS = a Sun Raster Images bitmap
RAW = a Raw File Format (bitmap)
RC = a Microsoft Visual C++ Resource Script
RDF = a Resource Description Framework file
REC = a Recorder macro
REG = a Registration file
RES = a Microsoft Visual C++ Resource
RFT = Revisable Form Text
RLE = a Run-Length Encoded bitmap
RM = a Real Audio video file
RMD = a Microsoft RegMaid document
RMF = a Rich Map Format
RMI =v MIDI music
ROV = a Rescue Rover data file
RPT =v Microsoft Visual Basic Crystal Reports file
RTF = a Rich Text Format document
RTM = a Real Tracker music module (MOD) file
RTS = a RealAudio's RTSL document
RVP = a Microsoft Scan Configuration file

SAM = a Ami Professional document
SAV = a Saved file
SBK = a Creative Labs Soundfont 1.0 Bank file
SBL = a Shockwave Flash object
SCC = a Microsoft Source Safe file
SCD = a Matrix/Imapro SCODL slide image
SCD = a Microsoft Schedule+ 7
SCF = a Windows Explorer command file
SCH = a Microsoft Schedule+ 1
SCN = a trueSpace2 scene
SCP = a Dial-Up Networking Script
SCR = a Windows screensaver; a fax image
SCT = a Scitex CT bitmap
SC2 = a Microsoft Schedule+ 7
SD2 = a Sound Designer 2 file
SDL = a SmartDraw library
SDR = a SmartDraw drawing
SDT = a SmartDraw template
SEA = a self-expanding archive
SEP = a Tagged Image File Format (TIFF) bitmap
SES = a Cood Edit Session file
SFX = a RAR self-extracting archive
SFF = a Fritz!Fax document
SF2 = a Creative Labs Soundfont 2.0 Bank file
SHB = a Corel Show presentation; a document shortcut file
SHG = a Hotspot bitmap
SHS = a Shell scrap file
SHW = a Corel Show presentation
SIT = a Stuffit archive of Macintosh files
SKL = a Macromedia Director resource file
SL = a PACT's Save Layout extension
SLK = a Symbolic Link (SYLK) spreadsheet
SND = a NeXT sound; Macintosh Sound Resource file
SQC = a Structured Query Language (SQR) common code file
SQR = a Structured Query Language (SQR) program file
STM = a Scream Tracker music module (MOD) file
STY = a Ventura Publisher style sheet
SVX = an Amiga 8SVX sound
SYS = a system file
SWA = a Shockwave audio file in Macromedia Director
SWF = a Shockwave Flash object
SWP = a Vim (temporary) swap file
S3M = a Scream Tracker 3 music module (MOD) file

TAR = a Tape Archive
TAZ = an Unix Gzip / Tape Archive
TBA = a PASSOLO translation bundle
TBU = a PASSOLO unicode translation bundle
TEX = a Texture file
TGA = a Targa bitmap
TGZ = an Unix Gzip/Tape Archive
THEME = a Windows 95 Desktop Theme
THN = a Graphics Workshop for Windows thumbnail
TIF = a Tagged Image File Format (TIFF) bitmap
TIFF = a Tagged Image File Format (TIFF) bitmap
TIG = a Tiger file, used by U.S. government to distribute maps
TLB = an OLE Type Library
TMP = a Windows temporary file
TPL = a CakeWalk Audio Template file
TRM = a Terminal file
TRN = a MKS Source Integrity project usage log
TRX = a PASSOLO translation file
TTF = a TrueType font
TWF = a TabWorks file
TWW = a Tagwrite Template
TX8 = a MS-DOS Text
TXT = a text file (industry standard)
TZ = an old compression format file
T2T = a Sonata CAD modeling file

UDF = a Windows NT Uniqueness Database File
ULT = an Ultratracker music module (MOD) file
URL = an Internet shortcut
USE = an MKS Source Integrity file
UU = an UU-encoded file
UUE = an UU-encoded file

VBA = a VBase file
VBP = a Visual Basic Project file
VBW = a Microsoft Visual Basic workspace
VBX = a Visual Basic custom control
VCE = an NMS file... audio-related, used by Cool Edit
VCF = a Vevi Configuration file
VDA = a Targa bitmap file
VDM = a VEDIT macor file
VI = a Virtual Instrument file
VIM = a Vim script file
VIR = a file identified as a virus-infected file by Norton AntiVirus
VIV = a VivoActive Player Streaming Video file
VLB = a Corel VENTURA library
VOC = a Creative Labs Sound Blaster sound
VP = a Corel VENTURA publication
VQE = a Yamaha Sound-VQ Locator file
VQF = a Yamaha Sound-VQ file
VQL = aYamaha Sound-VQ Locator file
VRML = a VRML file
VSD = a Visio drawing
VSL = a Download List file
VST = a Targa bitmap
VSW = a Visio Workspace file
VXD = a Microsoft Windows virtual device driver

WAB = a Microsoft Outlook file
WAD = a large file for the game Doom game
WAV = a Windows Waveform sound
WB1 = a Quattro Pro for Windows spreadsheet
WB2 = a Quattro Pro for Windows spreadsheet
WB3 = a Quattro Pro for Windows spreadsheet
WBK = a Microsoft Word Backup
WBL = an Argo WebLoad II upload file
WCM = a WordPerfect Macro
WDB = a Microsoft Works database
WEB = a CorelXara Web document
WGP = a Wild Board Games data file
WID = a Ventura width table
WIL = aWinImage file
WIZ = a Microsoft Word Wizard
WK1 = a Lotus 123 versions 1 & 2 spreadsheet
WK3 = a Lotus 123 version 3 spreadsheet
WK4 = a Lotus 123 version 4 spreadsheet
WKS = a Lotus 123 Worksheet spreadsheet; a Microsoft Works document
WLF = an Argo WebLoad I upload file
WLL = a Microsoft Word Add-In
WMF = a Windows Metafile
WOW = a Grave Composer music module (MOD) file
WP = a WordPerfect document
WPW = a Novel PerfectWorks document
WP4 = a WordPerfect 4 document
WP5 = a WordPerfect 5 document
WP6 = a WordPerfect 6 document
WPD = a WordPerfect Demo or Document file
WPG = a WordPerfect Graphic
WPS = a Microsoft Works document
WPT = a WordPerfect Template
WQ1 = a Quattro Pro/DOS spreadsheet
WQ2 = a Quattro Pro/DOS version 5 spreadsheet
WRI = a Write document
WRL = a virtual reality model
WRZ = another VRML fileject
WS1 = a WordStar for Windows 1 document
WS2 = a WordStar for Windows 2 document
WS3 = a WordStar for Windows 3 document
WS4 = a WordStar for Windows 4 document
WS5 = a WordStar for Windows 5 document
WS6 = a WordStar for Windows 6 document
WS7 = a WordStar for Windows 7 document
WSD = a WordStar 2000 document
WVL = a Wavelet Compressed Bitmap
WWL = a Microsoft Word add-in file
XAR = a Corel Xara drawing
XBM = a MIME 'xbitmap' image
XIF = a Wang imaging file
XLA = a Microsoft Excel add-in
XLB = a Microsoft Excel toolbar
XLC = a Microsoft Excel chart
XLD = a Microsoft Excel dialogue
XLK = a Microsoft Excel backup
XLL = a Microsoft Excel add-in file
XLM = a Microsoft Excel macro
XLS = a Microsoft Excel worksheet
XLT = a Microsoft Excel template
XLV = a Microsoft Excel VBA module
XLW = a Microsoft Excel workbook / workspace
XM = a FastTracker 2, Digital Tracker music module (MOD) file
XNK = a Microsoft Exchange shortcut file
XR1 = an nEpic MegaGames Xargon data file

XTP = a XTree data file
XWF = a Yamaha XG Works file
XY3 = an XYWrite III document
XY4v = an XYWrite IV document
XYP = an XYWrite III Plus document
XYW = an XYWrite for Windows 4.0 document
X16 = a Macromedia Extra document (16 -bit program extension)
X32 = a Macromedia Extra document (32 -bit program extension)

YAL = an Arts & Letters clipart library
YBK = a Microsoft Encarta Yearbook

Z = a Unix Gzip
ZIP = a Zip file
ZOO = an early compressed file format

000-999 = old versions of files; sequential number of related data files
12M = a Lotus 123 97 Smartmaster file
123 = a Lotus 123 97 file
2GR and 3GR = a VGA Graphics driver / configuration files for Windows
386 = a file for use in an 80386 or higher microprocessor
3DS = an Autodesk 3D Studio file
669 = a Composer 669, Unix Composer music mod file
$$$ = used by OS/2 to keep track of archived files


      © Copyright 1999 - 2005 Andreas Kutschbach