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Расширения файлов


До появления WINDOWS пользователю было очень важно знать , что содержит конкретный файл и какой программой его надо открывать , решалась эта проблема с помощью расширений . В то время приходилось ручками прописывать обработку расширений программами "исполнителям" . Сейчас , конечно , все изменилось , но все равно остается важным знать , что означает конкретное расширение . Список наиболее частоиспользуемых расширений :

-

###; Temp file; QTIC
#nn; Part of file image; Long
#24; Printer data file for 24 pin matrix printer; LogoScript
#IB; Printer data file; LogoScript
#SC; Printer data file; LogoScript
#ST; Standard mode printer definitions; LogoScript
$$$; OS/2 archive file (i.e archives.$$$, keys.$$$); OS/2
$$$; Temporary file;
$?; ZX Spectrum file in HOBETA format;
$00; Pipe file; DOS
$DB; Temporary file; dBASE IV
$ED; Editor temporary file; MS C
$O1; Pipe file; DOS
$VM; Virtual manager temporary file; Windows 3.x
??$; Backup file; P-CAD
??_; Microsoft packed file; Expand
?DK; Disk image; Loaddskf.exe
___; Adinf table; Adinf
_Q_; Archive; CP/M Squeeze
~$~; Temporary file; 1st Reader
~??; Old [BackUp] files (.MNU to .~MN); Resource Workshop
~AP; Old AppExpert project database; Borland C++ 4.5
~DE; Project backup; Borland C++ 4.5
~MN; Menu backup; Norton Commander
nnn; Arj archive volumes up to 999; ARJ
nnn; Netware unicode rule table (e.g. 1250_Uni.036); Novell Netware
nnn; News about smth with ext. of ver. number;
nnn; RAR archive volumes up to 999; RAR
000; Compressed harddisk data; DoubleSpace
001; Fax;
075; 75x75 dpi display font; Ventura Publisher
085; 85x85 dpi display font; Ventura Publisher
091; 91x91 dpi display font; Ventura Publisher
096; 96x96 dpi display font; Ventura Publisher
0B; Printer font with lineDraw extended character set; PageMaker
1; Fax; many
1; Roff/nroff/troff/groff source for manual page; cawf2.zip
1ST; Usually README.1ST text file;
2GR; 286 Grabber File; Win
301; Fax; Super FAX 2000 - Fax-Mail 96
386; Intel 80386 processor driver; Windows 3.x
386; Windows virtual device driver; Win
3DMF; QuickDraw 3D Metafile; QuickDraw
3DS; 3D Studio Graphics format; 3D Studio
3FX; Effect; CorelChart
3GR; 386 Grabber File; Win
3T4; Binary file converter to ASCII; Util3
4C$; Datafile; 4Cast/2
4MD; Musical file;
4SW; 4DOS Swap File; 4DOS
4TH; FORTH source code file; ForthCMP - LMI Forth
668; Music (the mixing is always at 12048Hz);
669; Music (8 channels); The 669 Composer
6CM; Music (6 Channel Module); Triton FastTracker
75; 75x75 dpi display font; Ventura Publisher
8; A86 assembler source code file;
85; 85x85 dpi display font; Ventura Publisher
8CM; Music (8 Channel Module); Triton FastTracker
8M; Printer font with Math 8 extended character set; PageMaker
8U; Printer font with Roman 8 extended character set; PageMaker
91; 91x91 dpi display font; Ventura Publisher
96; 96x96 dpi display font; Ventura Publisher

A

A; ADA source code file;
A; Library; unix
Ann; Multi volume ARJ archive; ARJ
A11; Graphics AIIM image file;
AB6; Datafile; ABStat
AB8; Datafile; ABStat
ABC; Document; ABC FlowCharter 1.0
ABF; Adobe Binary Screen Font; Adobe Software
ABK; Automatic backup file; CorelDRAW
ABM; Image PALS album file;
ABR; Adobe Brush file for PhotoShop; PhotoShop
ABS; Abstracts (info file);
ABS; Data file; Abscissa
ACA; Project; Project Manager Workbench
ACB; Archive; ACB
ACB; see ACMB;
ACC; Program (DR-DOS - ViewMax); GEM / resident
ACE; Archive; ACE
ACF; Adobe Custom Filter for PhotoShop; PhotoShop
ACM; Audio Compression Module add-on; Win
ACMB; Graphics file;
ACO; Adobe Color Palette;
ACT; ACTOR source code file; ACTOR
ACT; Animations Works Actor (Graphics cell); Animation Works
ACT; FoxDoc Action Diagrams; FoxPro
ACT; Presentation; Action!
AD; AfterDark screensaver module; AfterDark
AD2; ADPCM 2-bit compressed voice file; ZFAX
AD3; ADPCM 3-bit compressed voice file; ZFAX
ADA; ADA source code file;
ADB; Ada Package Body;
ADC; Bitmap graphics (16 colors); Scanstudio
ADC; Dictionary; Lingvo
ADI; Graphics file; AutoCAD
ADL; MCA adapter description library; QEMM
ADM; After Dark support file; AfterDark
ADN; Add-in; Lotus 1-2-3
ADR; After Dark support file; AfterDark
ADS; Ada Package Specification;
ADT; Datafile for cardfile application; HP NewWave
ADT; Dictionary; Lingvo
ADT; Fax; AdTech
ADV; GUS device driver; Gf166.com
ADX; Document; Archetype Designer
AF2; Flowchart; ABC FlowCharter 2.0
AF3; Flowchart; ABC FlowCharter 3.0
AFI; Truevision bitmap graphics;
AFL; Font file (for Allways); Lotus 1-2-3
AFM; Datafile for cardfile application; HP NewWave
AFM; Type 1 font metric ASCII data for font installer; ATM - many
AFP; Shape palette; ABC FlowCharter
AFT; Template; ABC FlowCharter 3.0
AFW; Workplace; ABC FlowCharter 3.0
AI; Vector graphics file; Adobe Ilustrator
AIF; see AIFF;
AIFC; Sound;
AIFF; Audio Interchange Format File (AIFF); Convert (c) Villena
AiM; Asm Text Mode Image File; The Ultimate Draw
AIN; Archive; AIN
AIO; APL file transfer format file;
AIS; Array of Intensity Samples graphics file; Xerox
AIX; Datafile for cardfile application; HP NewWave
ALG; Activity Log; ARCSOLO
ALL; ----- (Arts & Letters) symbol and font files; Arts & Letters
ALL; Filelist w/ all files; FRQView
ALL; Format file for working pages; Always
ALL; General printer information; WordPerfect for Win
ALO; Almanac support file;
ALT; Menu file; WordPerfect Library
AMF; Music (Advanced Module Format); DMP
AMG; Archive; AMGC
AMG; System image file; ACTOR
AMS; Adobe Monitor Setup calibration file; PhotoShop
AMS; Music format;
ANI; Animation; IconAuthor
ANI; Animation cursors for Win; Win95 - WinNT
ANM; Animation; Deluxe Paint Animator
ANN; Help Annotations; Windows 3.x
ANS; ANSI character graphics (animation) file; ANSView
ANS; ASCII text ANSI character set; NewWave Write
AOL; America On-line for Windows DLL; Win
AOS; Add-On Software; Nokia 9000
AP; Archive; WHAP
AP; Datafile; Datalex EntryPoint 90
APC; Printer driver; Lotus 1-2-3
APD; Printer driver; Lotus 1-2-3
APF; Printer driver; Lotus 1-2-3
API; Adobe Printer Ink file for PhotoShop; PhotoShop
API; Passed parameter file; 1st Reader
API; Printer driver; Lotus 1-2-3
APL; APL work space format file;
APL; Support module used by Manugraphics APL products;
APP; Add-in application file; Symphony
APP; Application; FoxPro
APP; Application object file; dBASE Application Generator
APP; Executable application file; DR-DOS - NeXTstep - Atari
APP; Generated application; FoxPro
APR; Employee performance review; Employee Appraiser
APX; Appexpert database file; Borland C++ 4.5
ARC; Archive; ARC - PKARC/PKXARC - PKPAS - PKUNPAK - QUARK
ARC; Archive; SQUASH
ARF; Automatic Response File;
ARH; Archivers definitions file; DN
ARI; Archive; ARI
ARJ; Archive; ARJ - ARJZ
ARK; ARC archive; CP/M port of ARC file archiver
ARK; Archive; QUARK
ARK; Managing your Money Archive File;
ARR; Arrangement; Atari Cubase
ART; Graphics (scrapbook); Art Import
ART; Graphics format (Another Ray Tracer); PFS:1st publisher - Art Import
ARX; Archive; ARX
ASC; ASCII text file;
ASC; Transport armor file; PGP
ASD; Autosave file; MS Word
ASD; Presentation; Astound
ASD; Screen driver; Lotus 1-2-3
ASF; Datafile; STATGRAPHICS
ASF; Screen font; Lotus 1-2-3
ASH; Assembly language header file; TASM 3.0
ASI; ASIC language source; ASIC
ASI; Assembler include file; Turbo C - Borland C++
ASM; Assembler language source; TASM - MASM
ASO; Assembler object (object orientated) file; Turbo Assembler
ASP; ASPECT source code file; Procomm Plus
ASP; Association of Shareware Professionals OMBUDSMN.ASP notice;
AST; Adobe Color Separtion table for PhotoShop; PhotoShop
AT2; Auto template; Aldus Persuasion 2.0
ATM; Adobe Type Manager data/info;
AU; Sound (audio) file; SUN Microsystems - Convert (c) Villena
AUX; Auxiliary dictionary; ChiWriter
AUX; Auxillary references; TeX/LaTeX
AVA; Publication; Avagio
AVB; AntiViral Toolkit Pro Bases;
AVI; Audio Video Interleaved animation file; Video for Windows
AVS; Application Visualization System;
AVT; AVATAR-coding files; A3E
AW; Text file; HP AdvanceWrite
AWA; Animations Works Accelerated Movie; Animation Works
AWD; Microsoft Fax At Work Document; MS Fax At Work
AWK; AWK script/program;
AWM; Animations Works Movie (as .AVI); Animation Works
AWS; Data; STATGRAPHICS

B

B; Batch list; APPLAUSE
B&W; Black and white graphics file; atari - mac
B&W; Mono binary screen image; 1st Reader
B_W; Black and white graphics file; atari - mac
B1N; Both mono and color binary screen image; 1st Reader
B30; Printer font (JLaser - Cordata); Ventura Publisher
B8; Raw graphics file (one byte per pixel) plane two; PicLab
BAD; Bad file; Oracle - many
BAK; Backup file;
BAL; Music score; Ballade
BAR; Horizontal bar menu object file; dBASE Application Generator
BAR; Info Bar for GFX2EXE; GFX2EXE
BAS; BASIC language source; QuickBASIC - GW-BASIC
BAT; Batch file; DOS
BB; Database backup; Papyrus
BBL; Bibliographic reference file; TeX/BibTeX
BBM; Brush; Deluxe Paint
BBS; Bulletin Board System announce or text info file;
BBS; Hudson-style messagebase; FTN software
BCH; Batch process object file; dBASE Application Generator
BCH; Datafile; Datalex EntryPoint 90
BCO; Outline font description; Bitstream
BCP; Borland C++ makefile;
BCT; Backup dictionary; Clarion
BCW; Environment settings; Borland C++ 4.5
BDC; Dictionary; Lingvo
BDF; Adobe Glyph Bitmap Distribution Format; Adobe Software
BDF; Binary update file; BUPDATE.EXE (c) TNT Techn.
BDF; Bitmap Distribution Format font file; X11
BDF; Datafile; Egret
BDR; Border; MS Publisher
BDT; Dictionary; Lingvo
BEZ; Outline font description; Bitstream
BF2; Bradford 2 font;
BFC; Briefcase Win95; Win95
BFM; Font metrics; unix/Frame
BFX; Fax; BitFax
BGA; Bitmap graphics;
BGI; Borland Graphics Interface device driver; Turbo C - Turbo Pascal
BI; BASIC include file; Visual Basic
BIB; Bibliography (ASCII);
BIB; Database - not compatible with TeX format; Papyrus
BIB; Literature database; TeX/BibTeX
BIF; Binary Image Format b&w graphics file; Image Capture board
BIN; Binary file, usually zero-start (.com analog);
BIN; SGI Powerflip;
BIN; Text mode memory dump; The Draw - TUD - ACiDDraw - etc
BIO; OS2 BIOS;
BIT; Bitmap X11;
BK; Faxbook; JetFax
BK!; Document backup; WordPerfect for Win
BKn; Timed backup file for document window n; WordPerfect for Win
BK?; Backup file;
BKP; Backup file; Write - TurboVidion DialogDesigner
BKW; Mirror image of font set; FontEdit
BLD; BLoaDable picture; BASIC
BLG; Backup Log; ARCSOLO
BLK; Temporary file; WordPerfect for Win
BM; BitMap graphics file;
BMK; Help Bookmarks; Windows 3.x
BMP; OS/2 or Win graphics format (BitMap Picture); QPeg - CorelDraw - PC Paintbrush - many
BMT; Ami Pro Button; Ami Pro
BNK; Adlib instrument bank file;
BNR; Graphics Banner; Banner - Poster
BOO; Book-format; READIBM
BOO; Compressed file ASCII archive created by BOO (msbooasm.arc); msbooasm.arc
BPC; Chart; Business Plan Toolkit
BPP; Backup application; Clarion
BPT; Bitmap fills file; CorelDRAW
BR; Script; Bridge
BRD; Eagle Layout File;
BRK; Fax; Brooktrout Fax-Mail
BRK; The Brake! Mailer REXX script; The Brake!
BRL-CAD; Ballistic Research Laboratory CAD; BRL
BS2; Archive; BS2.EXE
BSA; Archive; BSArc
BSC; Compressed Apple II file archive created by BINSCII; BINSCII
BSC; Database; Source Browser
BSC; Pwbrmake object file; MS Fortran
BST; BiblioTex file (BiblioTex=bibliography file); TeX
BSY; Busy flag; FTN soft
BTM; Batch-to-memory (quick batch); 4dos -ndos
BTN; Makeover Button file;
BUFR; Binary Universal Form for the Representation;
BUFR; Meteorological Data;
BUG; Bugs and Problems;
BUP; Backup file;
BUT; Button definitions; Buttons!
BUY; Datafile format; movie
BVn; Overflow file below insert point in Doc n; WordPerfect for Win
BWB; Spreadsheet application; Visual Baler
BWR; Beware (buglist); Kermit
BYU; BYU Movie; BYU

C

C; C language source; Watcom C/C++
C; Unix file archive; COMPACT
C--; C-- language source; Sphinx C--
C++; C++ language source;
C00; Print file; Ventura Publisher
C86; C source code file; Computer Innovation C86
CA; Initial cache data for root domain servers ; Telnet
CA?; Borland packed and splitted file; Borland Installer
CAB; Win 95 packed file; Win 95
CAC; dBASE IV executable when caching on/off (see cachedb.bat);
CAD; Document; Drafix Windows CAD
CAL; Calendar file; Windows 3.x
CAL; Spreadsheet format; SuperCalc
CALS; Computer Aided Acquisition and Logistics;
CALS; Support Raster Format;
CAM; Casio Camera;
CAN; Fax; Navigator Fax
CAP; Caption; Ventura Publisher
CAP; Capture file; ProComm - Telix
CAS; C + ASM language source; Turbo C
CAT; Catalog; CP Backup - dBASE IV
CBC; Fuzzy logic system; CubiCalc
CBL; COBOL source code file;
CBM; Compiled bitmap graphics; XLib
CBS; MasterWord button bar configuration file;
CBT; Computer Based Training; many
CC; C++ source code file;
CC; CC language source; CC
CCC; Bitmap graphics (native format); Curtain Call
CCF; Communications configuration file; Symphony
CCH; Chart; CorelChart
CCITT; CCITT Group 3 and Group 4 Encoding;
CCL; Communication Command Language file; Intalk
CCO; BTX Graphics file; XBTX
CD; CD description; DN
CDA; CD-Audio; Win95
CDB; Card database; CardScan
CDB; Main database; TCU Turbo C Utilities
CDF; Common Data Format;
CDF; Cyberspace Description Format;
CDF; Graphics; netcdf
CDK; Document; Atari Calamus
CDL; CADKey CADL Language; CADKey
CDM; Disk Drivers NPA; Novell NetWare
CDM; Music format (compressed);
CDR; Vector graphics format (drawing); CorelDraw!
CDT; Corel Draw Template File; CorelDraw!
CDX; Compaund index file; FoxPro
CE; Main.ce; The FarSide Computer Calendar
CEF; CA-Clipper Workbench Application; CA Clipper
CEF; Export File;
CEG; Bitmap graphics; Tempra Show - Edsun Continuous Edge Graphics
CEL; Animation CEL; 3D Studio
CEL; Graphics; Autodesk Animator - Lumena
CF; Configuration file; imake
CFG; Configuration file;
CFL; Chart; CorelFLOW
CFN; Font data; Atari Calamus
CFO; C Form Object internal format object file; TCU Turbo C Utilities
CFP; Fax; The Complete Fax Portable
CFT; CFast graphics file; Disney Animation Studio
CGA; CGA display font; Ventura Publisher
CGI; Common Gateway Interface script;
CGM; Computer Graphics Metafile vector graphics; A&L - HG - many
CH; Clipper language header; CA Clipper
CH3; Chart; Harvard Graphics 3.0
CH4; Presentation; Charisma 4.0
CHD; Font descriptor; FontChameleon
CHI; ChiWriter Document; ChiWriter - Chiview
CHK; Recovered data; DOS CHKDSK
CHK; Temporary file; WordPerfect for Win
CHL; Configuration History Log;
CHN; Data; Ethnograph 3
CHP; Chapter file; Ventura Publisher
CHR; Character set ; Turbo C - Turbo Pascal
CHT; Chart; Harvard Graphics 2.0 - SoftCraft Presenter
CHT; Interface file for ChartMaster; dBASE
CHZ; Archive; CHARC
CIF; Caltech Intermediate Format graphics file;
CIF; Chapter information; Ventura Publisher
CiM; C Text Mode Image File; The Ultimate Draw
CIX; Database index; TCU Turbo C Utilities
CKB; Borland C++ 4.x editor keystroke mapping; BCW.EXE
CL; COMMON LISP source code file;
CLA; Source; Clarion
CLD; Clipper debugger configuration file; CA Clipper
CLP; Clip art graphics file; Quattro Pro
CLP; Clipboard file; Windows 3.x
CLP; Compiler responce file; CA Clipper
CLP; Graphics format; PCPAINT/Pictor
CLR; Color binary screen image; 1st Reader
CLR; Color definitions; Photostyler
CLR; Color scheme; Boxer/2
CLS; C++ class definition file;
CLW; MFC Class Wizard information; MS VC++
CM; Data file; CraftMan
CMB; Xtree for Windows Button Bar file;
CMD; Command; dBASE - Waffle
CMD; External command menu; 1st Reader
CMD; OS/2 batch/REXX file; OS/2
CMF; FM-music file (Creative Music File);
CMK; Card; Card Shop Plus
CMM; CMM script (batch) file; CEnvi
CMP; Bitmap graphics (Lead CMP compression);
CMP; Compressed data; PKWare Inc. data compression library
CMP; Header file for PostScript printer files; CorelDRAW
CMP; Photofinish Calibration Map; Photofinish
CMP; User dictionary; MS Word for DOS
CMU; Carnegie Mellon University Formats;
CMV; Animation (CorelMove CorelDraw 4.0); CorelMove CorelDraw 4.0
CNC; CNC general program data;
CNF; Configuration (program - printer setup); program - printer setup
CNF; Configuration file;
CNV; Temporary file; WordPerfect for Win
CNV; Winword DLL used as part of an import operation (CNV=convertor); MS Word
COB; Calgari trueSpace2 File Format;
COB; COBOL source code file;
COD; Code definition table; UUPC
COD; Datafile; Forecast Plus - MS Multiplan - StatPac Gold
COD; Printer code definition file; Boxer/2
COD; Program compiled code; FORTRAN
COD; Template source file; dBASE Application Generator
COD; Videotext file;
COL; Color palette; Autodesk Animator - many
COL; Spreadsheet; MS Multiplan
COM; Command (memory image of executable program); DOS
CON; Configuration file; Simdir
CPC; Compressed image; Cartesian Perceptual Compression
CPD; Script; Complaints Desk
CPF; Fax; The Complete Fax
CPI; ColorLab Processed Image bitmapped graphics file;
CPI; MS-DOS codepage file; MODE.EXE
CPL; Control panel file; Windows 3.x
CPL; Presentation; Compel
CPP; C++ language source; Watcom C/C++
CPP; Presentation; CA-Cricket Presents
CPS; ----- backup of startup files by QEMM (?) autoexec.cps;
CPT; Encrypted memo file; dBASE
CPT; Mac file archive; COMPACT PRO
CPT; Template; CA-Cricket Presents
CPZ; Music text file; COMPOZ
CRA; Advanced crack file (usually text);
CRD; Cardfile; Windows 3.x - YourWay
CRF; Cross-reference; MS MASM - Zortech C++
CRK; Crack file (usually text);
CRP; Encrypted database; dBASE IV
CRS; File Conversion Resource; WordPerfect 5.1
CRT; Terminal settings information; Oracle
CRU; Compressed file archive created by CRUSH;
CSG; Graph; Statistica/w
CSM; Borland C++ 4.x precompiled header file; BCW.EXE
CSP; PC Emcee Screen Image file; Computer Support Corporation
CSS; Datafile; CSS - Stats+
CSS; Datasheet; Statistica/w
CSV; Adjusted EGA/VGA palette; CompuShow
CSV; Comma Separated Values text file format (ASCII);
CTC; Control file; PC Installer
CTF; Character code translation file; Symphony
CTL; Control file; dBASE IV - Aldus Setup
CTX; Ciphertext file; Pretty Good Privacy RSA System
CTX; Course TeXt file; some Microsoft online guides
CUF; C Utilities Form definition; TCU Turbo C Utilities
CUR; Windows resource (cursor image file); Resource Workshop - WRT - Watcom Resource Editor
CUT; Graphics format (bitmapped graphics); dr.Halo
CV4; Color file; CodeView
CVP; Cover page; WinFax
CVS; Graphics; Canvas
CVT; Backup file for CONVERTed database file; dBASE IV
CVW; Color file; CodeView
CWEB; C Web;
CXX; C++ source code file; Zortech C++

D

DAT; Data file in special format or ASCII;
DAT; Database file; Clarion
DB; Configuration ; dBASE IV - dBFast
DB; Database file; Paradox - XTreeGold - dbvista
DB; Multi Edit config; ME
DB$; Temperature debug info; Clarion Modula-2
DB$; Temporary file; dBASE
DB2; Database; dBASE II
DB3; Database; dBASE III
DBA; Database file; Turbo Prolog - DataEase
DBD; Business data; Business Insight
DBD; Debug info; Clarion Modula-2
DBF; Database file; dBASE III/IV - FoxPro - dBFast - DataBoss
DBG; Debugger script; DOS debug - Watcom debuger
DBG; Symbolic debugging information; MS C/C++
DBK; Database backup; dBASE IV
DBM; Datafile; DataEase
DBM; Menu template; DataBoss
DBO; Compiled program; dBASE IV
DBS; Data file used by Managing Your Money;
DBS; Database in SQL Windows format;
DBS; Datafile; PRODAS
DBS; Printer description file; MS Word - Works
DBT; FoxBASE+ style memo; FoxPro
DBT; Memo file for database w/same name; dBASE IV - dBFast
DBW; Windows file; DataBoss
DCA; Document Content Architecture text file; IBM DisplayWrite
DCF; Disk image file;
DCL; Delphi Control Library; Borland Delphi
DCP; OS/2 device code page; OS/2
DCS; Bitmap graphics (CYMK format); QuarkXPress
DCS; Datafile; ACT! Activity Files
DCT; Dictionary: used by many programs with program dependent format; Clarion
DCT; Spell checking dictionary; Harvard Graphics 3.0 - Symphony
DCU; Delphi unit (compiled); Borland Delphi
DCX; Multi-page PCX graphics (common fax format); Intel - SpectraFAX
DD; Macintosh file archive; DISKDOUBLER
DDB; Bitmap graphics;
DDI; Disk image; DiskDupe
DDP; Device Driver Profile file; OS/2
DEB; DEBUG script; DOS Debug
DEF; Assembly header file; Geoworks
DEF; Defaults - definitions;
DEF; Linker definition file; TLink - WLink...
DEM; Demonstration;
DEM; Digital Elevation Model;
DEM; Graphics file; VistaPro
DEM; Vista DEM file; Meta.exe VP3
DEV; Device driver;
DFD; Data Flow Diagram graphic file; Prosa
DFI; Outline font description; Digifont
DFL; Default program settings; Signature
DFM; Data Flow Diagram model file; Prosa
DFM; Delphi form module; Borland Delphi
DFS; Delight Sound File;
DFV; Printing form (Word); MS Word
DFX; Micrografx Effects DLL;
DGN; Graphics file; MicroStation
DGS; Diagnostics;
DH; Dependency information for .ph; Geoworks
DHP; Dr. Halo PIC Format graphics file; Dr. Halo II - III
DHT; Datafile; Gauss
DIA; Diagraph graphics file; Computer Support Corporation
DIB; "Device Independent Bitmap; rarely used Windows 3.0 bitmap"; Win - OS/2
DIC; Dictionary (e.g. from WinWord);
DIF; Borland patch data file; Borland patch
DIF; Data Interchange Format; Visicalc
DIF; OS/2 V2.2 Display Information File; OS/2
DIF; Output from Diff command - script for Patch command;
DIP; Graphics;
DIP; Watcom debug info processor; WatcomDebugger
DIR; Dialing directory file; Procomm Plus
DIR; Directory file; VAX - CPS Backup
DIR; Movie; MacroMind Director 4.x
DIS; Distribution file; VAX Mail
DIS; Thesaurus; CorelDraw
DIZ; Description file (Description In Zip);
DKB; Raytraced graphics; DKBTrace
DL; Animation format (Italian origin); Display - DL Viewer
DLD; -----; Lotus 1-2-3
DLG; Dialog resource script file; MS Windows SDK
DLG; Dialog resources; DN
DLG; Digital Line Graph;
DLG; Windows SDK dialog editor data file;
DLL; Dynamic Link Library; Windows 3.x - OS/2
DLL; Export/import filter; CorelDRAW
DLS; Setup; Norton Disklock
DMF; Music format (Delusion Digital Music File); Delusion
DMO; Demo; Derive
DMP; Dump file (eg. screen or memory);
DMS; Amiga file archive; DISKMASHER
DOC; ASCII doc file;
DOC; WinWord native file; MS Word
DOG; Screen file; Laughing Dog Screen Maker
DOH; Dependency information for .poh; Geoworks
DOS; External command file; 1st Reader
DOS; Network driver (eg. pkt_dis.dos);
DOS; OS/2 V3 SVGA PMI-File; Svga.exe
DOS; Something for MS-DOS (e.g. msdos.dos); Win95
DOS; Text file containing DOS specific info;
DOT; Line-type definition file; CorelDRAW
DOT; MS Word document template; MS Word
DOX; Text file; MultiMate 4.0
DOZ; Description Out of Zip; VENDINFO
DP; Calendar file; Daily Planner
DP; Data file; DataPhile
DPR; Default project- and state-related information; Borland C++ - Delphi - C
DPX; Digital Moving Picture Exchange;
DRS; Display Resource; WordPerfect for Win
DRV; Driver;
DRW; Designer vector graphics file; Designer - MicroGraphix
DS4; Vector graphics; Micrografx Designer 4.x
DSC; Description file;
DSC; Discard file; Oracle
DSD; Database; DataShaper
DSF; Delusion Digital Sound File; Delusion
DSK; Desktop configuration; BP - DN - BC++ - TP
DSK; Disk Drivers; Novell NetWare
DSM; Digital Sound Module; DSI
DSN; Design; Object System Designer
DSP; Display parameters; Signature
DSP; Dynamic Studio Professional Module; Dynamic Studio
DSP; Graphics display driver; Dr.Halo
DSP; Norton viewer DLL; Win
DSR; Driver Resource; WordPerfect for Win
DSS; Screensaver file; DCC
DSS; Sound; Digital Soup
DST; WAIN (Scanner spec) data source DLL; Win
DSW; Borland C++ 4.x desktop layout file; BCW.EXE
DT_; Data fork of a Macintosh file; Mac-ette
DTA; Data file; Turbo Pascal - PC-File - Stata
DTF; Database file; PFS - Q&A
DTP; Document; Timeworks Publisher3
DTP; Page Magic 2.0 publication; Page Magic 2.0
DTP; Publication; Publish-It!
DVC; Data; Lotus 1-2-3
DVI; DeVice Independent document; TeX
DVP; DESQView run-file; DESQView
DVP; Device parameter file; AutoCAD
DW2; Drawing; DesignCAD for windows
DWB; Coryphaeus Software Designers Workbench; CSD
DWC; Archive; DWC
DWG; Drawing; AutoCAD - Drafix
DX; Text file; DEC WPS/DX format - DEC WPS Plus
DXF; Drawing Interchange File Format vector graphics (AutoCAD); AutoCAD
DXN; Fax; Fujitsu dexNET
DYN; Data; Lotus 1-2-3

E

EAS; Extended file attributes; OS/2
EBJ; Error-checking object file; Geoworks
EC; Error checking preprosessed Goc source code; Geoworks
EDT; Default settings; VAX Edt editor
EDT; External editors definitions; DN
EEB; Button bar for Equation Editor; WordPerfect for Win
EFT; High resolution screen font; ChiWriter
EFX; Fax; Everex EFax
EGA; EGA display font; Ventura Publisher
EKA; Internal data files; Borland's Eureka
EL; ELISP source code file; Emacs lisp
ELC; Compiled ELISP code; Emacs lisp
ELI; Archive; ELI
ELT; Event list text file; Prosa
EMF; Microsoft Enhanced Metafile;
EMU; Terminal emulation data; BITCOM
ENC; Encoded file - UUENCODEd file; Lotus 1-2-3 - uuexe515.exe
ENC; Music; Encore
END; Arrow-head definition file; CorelDRAW
ENFF; Extended Neutral File Format;
ENG; Dictionary engine; Sprint
ENG; English documentation;
ENG; Graphics file (charting); EnerGraphics
ENV; Envelope or Environments;
ENV; Enveloper macro; WOPR
ENV; Environment file; WordPerfect for Win
EPD; Publication; Express Publisher
EPI; Document; Express Publisher
EPS; Encapsulated PostScript (Graphics format); CorelDraw - PhotoStyler - PMView - Adobe Illustrator - Ventua Publisher
EQN; Equation filE; WordPerfect for Win
ERD; Entity Relationship Diagram graphic file; Prosa
ERM; Entity Relationship Diagram model file; Prosa
ERR; Compiler/linker error report;
ESH; Extended Shell batch file;
ETH; Document; Ethnograph 3
ETX; Structure-enhanced text for some ascii text browsers;
EVT; Events descriptions;
EVY; Document; WordPerfect Envoy
EWD; Document; Express Publisher for Windows
EX3; Device driveR; Harvard Graphics 3.0
EXC; Exclude file for Optimize (do not process) (QEMM); QEMM
EXC; REXX source code file; VM/CMS
EXE; Directly executable program; DOS
EXM; MSDOS executable, system-manager compliant (HP calculator); HP calculator
EXP; Protected mode EXE by PharLap Software; PharLap
EXT; Extensions descriptions file;
EXX; Intermediate file by MsgPut; IBM LinkWay
EZF; Fax; Calculus EZ-Fax

F

F; Archive; FREEZE
F; Fortran language source file; NDP Fortran
Fnn; DOS screen text font - height nn pixels; fntcol13.zip
F01; Fax; perfectfax
F2R; Farandole Linear Module; Farandole
F3R; Farandole Blocked Linear Module; Farandole
F77; FORTRAN 77 source code file;
F96; Fax; Frecom FAX96
FAC; see FACE;
FACE; Usenix FACE graphics file;
FAQ; Frequently Asked Questions text file;
FAR; Music format (Farandole Composer Module); Farandole
FAS; Macsyma compiled program;
FAX; Fax (raster graphics in CCITT format); most Fax programs
FBM; Fuzzy Bitmap;
FC; Spell checking dictionary; Harvard Graphics 2.0
FCM; Binary file patch file (forward compression); jlpak10.zip
FD; Declaration file; MS Fortran
FD; Field offsets for compiler; DataFlex
FD; Front Door' resource files; FD
FDW; Form; F3 Design and Mapping
FEB; Button bar for Figure Editor; WordPerfect for Win
FEI; Fatal Error Infotable; Geoworks
FF; Intelligont FIAS format;
FF; Outline font description; Agfa Compugraphics
FFF; Fax; defFax
FFI; Atech FastFont (AllType);
FFIVW; File Format for the Interchange of Virtual Worlds;
FFT; DCA/FFT Final Form Text text file; DisplayWrite
FFT; Dca/FFT Final Form Text text file (DisplayWrite);
FH3; Vector graphics; Aldus FreeHand 3.x
FH4; Vector graphics; Aldus FreeHand 3.x
FI; Interface file; MS Fortran
FIF; Fractal Image Format file;
FIL; File template; Application Generator
FIL; Filelist;
FIL; Files list object file; dBASE Application Generator
FIL; Mirror.FIL is the name given to the saved FAT by the mirror program included in some versions of DOS and in PCTools; MS-DOS -
FIL; Overlay; WordPerfect
FIN; Print-formatted text file; Perfect Writer - Scribble - MINCE
FIO; Aldus PhotoStyler graphics filter;
FIO; Image PALS viewer DLL;
FIT; File Index Table; WindowsNT
FIT; see FITS;
FITS; Flexable Image Transport System;
FIX; Patch file;
FKY; Macro file; FoxPro
FLB; Format library; Papyrus
FLC; Animation format FLIC >320x200; AAPlay - Autodesk AniPro
FLD; Folder; Charisma
FLI; Animation format FLIC 320x200; Autodesk Animator
FLI; TeX font library; EmTeX
FLM; Film Roll; AutoCAD/AutoShade
FLT; Data/file conversion filter (or overlay); Alsud - MS Word
FLT; Filter file; Micrografx Picture Publisher
FLT; MultiGen Flight;
FLT; Support file - graphics filter; Asymetrix ToolBook
FLX; Animation format;
FLX; Compiled binary; DataFlex
FM; Spreadsheet; FileMaker Pro
FM1; Spreadsheet; Lotus 1-2-3 release 2.x
FM3; Device driver; Harvard Graphics 3.0
FM3; Spreadsheet; Lotus 1-2-3 release 3.x
FMB; File Manager Button bar; WordPerfect for Win
FMF; Font or icon file; IBM LinkWay
FMK; Makefile; Fortran PowerStation
FMO; Compiled format file (dBASE IV); dBASE IV
FMT; Format file; dBASE IV - FoxPro - Clipper 5 - dBFast
FMT; Gate3 format file;
FMT; Style sheet; Sprint
FMV; Full Motion Video file;
FN3; Font file; Harvard Graphics 3.0
FND; Files searching properties; Win95
FNT; Font file; many
FNX; Inactive font; Exact
FO1; Font file; Borland Turbo C
FO2; Font file; Borland Turbo C
FOG; Fontographer Database File; Fontographer3.5
FOL; Folder of saved messages; 1st Reader
FON; Log of all calls; Procomm Plus
FON; Terminate phonebook; Terminate - Terminator - Telix
FON; Windows bitmapped font file; Win
FONT; Font data; unix
FOR; Form; WindowBase
FOR; Fortran language source file; MS Fortran - Watcom Fortran
FOT; Installed Truetype font; Windows Font Installer
FOX; Foxbase executable (precompiled .prg); FoxBase
FP; Configuration file; FoxPro
FPC; Catalog; FoxPro
FPD; TMT Pascal compiled unit; TMT Pascal
FPT; Foxpro memo field tables; FoxPro
FPW; Floorplan drawing; FloorPLAN plus for Windows
FR?; Packed mail; FTN software
FR3; Renamed dBASE III+ form file; dBASE IV
FRF; FontMonger Database file; FontMonger
FRG; Uncompiled report file; dBASE IV
FRL; GP-Forth library; GP-Forth
FRM; Registration or other form;
FRM; Report file; dBASE IV - Clipper 5 - dBFast
FRM; Visual Basic Form; Visual Basic
FRO; Compiled report file; dBASE IV
FRP; Form; PerForm PRO Plus - FormFlow
FRS; Screen Font Resource; WordPerfect for Win
FRT; Additional (FPT) report description file; FoxPro
FRT; GP-Forth source file; GP-Forth
FRX; Main (DBF) report description file; FoxPro
FRX; Visual Basic binary program file; Visual Basic
FSL; Form; Paradox for Windows
FSM; Farandole Composer WaveSample; Farandole
FST; Linkable program; dBFast
FSX; Data; Lotus 1-2-3
FTM; Font file; Micrografx
FTP; Configuration; FTP Software PC/TCP
FW; Database; FrameWork
FW2; Database; Framework II
FW3; Database; Framework III
FWEB; Fortran WEB;
FX; On-line guide; FastLynx
FXD; Phonebook; FAXit
FXP; Foxpro executable (precompiled .prg); FoxPro
FXS; FAX Transmit Format graphics file; WinFax

G

G; Data chart; APPLAUSE
G16; GoldED for DOS compiled config; GOLDED.EXE
G8; Raw graphics file (one byte per pixel) plane three; PicLab
GAM; Fax; GammaFax
GBL; Global definitions; VAXTPU editor
GBL; Global module in Basic programs;
GC1; Lisp source code; Golden Common Lisp 1.1
GC3; Lisp source code; Golden Common Lisp 1.3
GCD; Graphics;
GDF; Dictionary file; GEOS
GDS; McDonnell-Douglas Things;
GE; GEcho config file; GEcho
GED; EDITOR's native file format; Arts & Letters
GED; GoldED for DOS compiled config file; GOLDED.EXE
GED; Graphics editor file; EnerGraphics
GEM; Vector graphics file; GEM - Ventura Publisher
GEN; Compiled template; dBASE Application Generator
GEN; Generated text; Ventura Publisher
GEO; Geode; Geoworks
GEO; GEOS specific file (application); GEOS;
GEO; GoldED for OS/2 compiled config file; GED2.EXE;
GEX; GEcho config file; GEcho;
GFB; Compressed GIF image created by GIFBLAST; gifblast.exe;
GFO; SGI Radiosity; ;
GFT; Font; NeoPaint;
GFT; GEM-translator font file; ;
GFX; Instant Artist graphics Files; Instant Artist;
GFX; PCBoard @X-coded colorful text; GFX2COM - GFX2EXE;
GIB; Chart; Graph-in-the-Box;
GID; Help index; windows 95 help;
GIF; Compuserves' Graphics Interchange Format (bitmapped graphics); QPeg - Display - CompuShow;
GIW; Presentation; Graph-in-the-Box for Windows;
GKH; Ensoniq Disk Image (VFX, SD, EPS, ASR, TS); Ensoniq;
GKS; Graphics Kernel System; ;
GL; Animation; GRASP GRAphical System for Presentation;
GLB; Global module in Basic programs;
GLM; Datafile; Glim
GLO; Global module in Basic programs;
GLS; Datafile; Across
GLY; Winword Glossary; MS Word
GMF; CGM graphics file; APPLAUSE
GMP; Geomorph tile map; SPX
GOC; Goc source code file; Geoworks
GOH; Goc header file; Geoworks
GP; Geode parameter file; Geoworks Glue
GPH; Graph; Lotus 1-2-3/G
GPK; Omnigo program package;
GR2; Screen driver; Windows 3.x
GRA; Datafile; SigmaPlot
GrADS; Metafile;
GRASP; Graphical System for Presentation;
GRB; MS-DOS Shell Monitor file; MS-DOS 5
GRD; Drivers for GRX (graphics library); GRX (c) Free Soft. Found.
GRF; Graph file ; Graph Plus - Charisma
GRIB; Gridded Binary;
GRN; Drivers for GRX (graphics library); GRX (c) Free Soft. Found.
GRP; Group file ; Windows 3.x - Papyrus
GRP; Pictures group ; PixBase
GRY; Graphics format (RAW GREYz);
GS1; Presentation; GraphShow
GSD; Vector graphics; Professional Draw
GSW; Worksheet; GraphShow
GUP; -----; PopMail
GV; GrandView outline file;
GXL; Graphics library; Genus
GZ; Archive; GNU zip - WinZipNT

H

H; Header file (usually C language); Watcom C/C++
H--; C-- language header; Sphinx C--
H!; On-line help file; Flambeaux Help! Display Engine
H!; Pertext database; HELP.EXE
H++; Header file; C++
HA; Archive; HA
HAL; Data file; Hyper Access Lite OS/2
HAM; Disk Drivers NPA; Novell NetWare
HAP; Archive; HAP3
HBK; MathCAD handbook; MathCAD
HC; Header file;
HDF; Help file; Help Development Kit
HDF; Hierarchical Data File graphics file; SDSC Image Tools
HDL; Alternate download file listing; Procomm Plus
HDR; Datafile; Egret
HDR; Message header text; Procomm Plus - 1st Reader
HDR; PC-File+ Database header;
HDS; Hierarchical Data System;
HDW; Vector graphics; Harvard Draw
HDX; Help index; AutoCAD - Zortech C++
HEP; Novell Help Librarian Data File; Novell NetWare
HEX; Hex dump;
HFI; HP Font Info file; GEM
HGL; Highlight groups definitions; DN
HGL; HP Graphics Language graphics file;
HH; C++ header file;
HHH; Precompiled header file; Power C
HHP; Help information for remote users ; Procomm Plus
HI; Game high scores table;
HIN; Molecule; HyperChem
HIS; History of executing/viewing/editing; DN
HLB; Help library; VAX
HLP; Help file;
HLX; Multi Edit help file; MultiEdit 5.0
HLZ; Multi Edit packed help file; MultiEdit
HMI; Music format (MIDI);
HMM; Alternate Mail Read option menu; Procomm Plus
HMP; Music format (MIDI);
HNC; CNC program files Heidenhain (?) dialog;
HOF; Hall Of Fame (game scores);
HP; Printout file for HP printers/plotters (HP/GL);
HP8; ASCII text HP Roman8 character set; NewWave Write
HPF; HP LaserJet fonts; PageMaker
HPG; see HPGL;
HPGL; Plotter file vector graphics (Hewlett-Packard Graphics Language); AutoCad - Harvard Graphics
HPI; Font information file; GEM
HPJ; Help project; MS Help Compiler for Windows - HC. EXE
HPK; Archive; HPACK
HPM; Alternate Main menu for privileged users; Procomm Plus
HPM; EMM text; HP NewWave
HPM; High Performance Map; Quaestor 1.x
HPP; C++ header file; Zortech C++ - Watcom C/C++
HPPCL; Hewlett-Packard Printer Control Language;
HQX; Archive (ASCII Mac); BINHEX
HRF; Graphics file (Hitachi Raster Format);
HRM; Alternate Main menu for limited/normal users; Procomm Plus
HRZ; Graphics format; SSTV
HS2; Monochrome image; Postering
HSC; 2-op FM music; HSC tracker - hscplay.exe
HSI; Handmade Software Inc. graphics file almost JPEG; Image Alchemy
HST; History file; Procomm Plus
HTM; see HTML;
HTML; Hyper Text Macro Language (WWW); NetScape - Mosaic - many
HTX; Hypertext file;
HWD; Presentation; Hollywood
HXM; Alternate Protocol Selection menu for all users; Procomm Plus
HXX; C++ header file;
HY1; Hyphenation algorithms; Ventura Publisher
HY2; Hyphenation algorithms; Ventura Publisher
HYC; Data; WordPerfect
HYD; Hyphenation dictionary; WordPerfect for Win
HYP; Archive; HYPER

I

I; Preprocessor output file; Borland C Preprocessor
IAX; Bitmap graphics (IBM Image Access eXecutive);
IBM; Archive (Internal IBM only); ARCHDOS
ICA; Bitmap graphics (Image Object Content Architecture);
ICB; Bitmap graphics;
ICC; ICC configuration;
ICE; Archive; Cracked LHA (old LHA)
ICM; ICC configuration;
ICN; ICON source code file;
ICO; Icon file; ICONEDIT.EXE
ID; Disk identification file;
IDB; IDA database; IDA
IDC; IDA C language source; IDA
IDE; Borland C++ 4.x IDE project; BCW.EXE
IDF; MIDI instrument description;
IDS; IDA imported names format; IDA
IDW; Vector graphics; IntelliDraw
IDX; Index; many - FoxPro
IFD; Form; JetForm Design
IFF; Interchange Format File (IFF); EA Software - Convert (C) Villena - Amiga
IFF; Sun TAAC Image File Format; SDSC Image Tool
IFP; Script; KnowledgeMan
IFS; Fractal image compressed file; Yuvpak
IFS; Installable file system; OS/2
IGES; Initial Graphics Exchange Specification;
IHP; Watcom help file; whelp.exe
IHS; Inbound History; Bink/+
IL; hDC Designer Icon Lin Dll format;
ILB; Data; Scream Tracker
ILK; Outline of program's format; MS ILink incremental linker
IM8; Sun raster graphics file;
IMA; Mirage vector graphics; EGO - Chart - Autumn
IMG; Disk Image; NC 5.0
IMG; GEM bitmapped graphics file; Ventura
IMP; Spreadsheet; Lotus Improv
IMQ; Image presentation; ImageQ
IN$; Installation file; HP NewWave
IN3; Input device driver; Harvard Graphics 3.0
INB; Test script; Vermont HighTest
INC; Include file; several programming languages
IND; Data Index; dBASE IV
INF; Information text file (ASCII);
INF; Install script;
INF; OS/2 hypertext help system file; VIEW.EXE
INF; Type 1 LaserJet font information file; soft font installers
INFO; GNU info reader (output from texinfo); unix
INFO; Icon Data (Amiga);
INGR; Intergraph Raster File Format;
INI; Initialization file;
INK; Pantone reference fills file; CorelDRAW
INS; Data; WordPerfect
INS; Ensoniq Instrument File; Ensoniq
INS; Installation script; 1st Reader
INS; Instrument music file (Adlib);
INT; Borland Interface Units;
INT; Program saved in Internal (semi-compiled) format; Signature
INT; Source of Borland interface module;
INX; Index; Foxbase
IO; Archive; CPIO
IOB; 3d graphics database in TDDD format;
IOC; Organizational chart; Instant ORGcharting!
ION; 4DOS descript.ion file (file descriptions); 4DOS
IPL; Pantone Spot reference palette file; CorelDRAW
IRS; Resource (WordPerfect) standard.irs; WordPerfect
IRTP; Graphicon-2000 Interactive Real-Time PHIGS;
ISD; Spelling Checker dictionary; RapidFile
ISH; Archive; ISH
ISO; ISO-9660 table;
IT; Impulse Tracker music file; Impulse Tracker
IT; Settings; intalk
ITF; Interface file; JPI TopSpeed Pascal
IV; SGI Inventor;
IV-VRML; Inventor VRML Format;
IW; Presentation flowchart; IconAuthor - HSC InterActive
IWA; Text file; IBM Writing Assistant
IWP; Text file; Wang
IZT; Izl binary token file; IZL

J

JAM; Jam messagebase; FTN software
JAR; Archive; JAR
JAS; see JASC;
JASC; Graphics format (JASC);
JAV; see JAVA;
JAVA; Java source code file;
JBD; Datafile; SigmaScan
JBIG; Joint Bilevel Image Group;
JBX; Project file; Project Scheduler 4
JET; Fax; Hybrid JetFax
JFF; see JFIF;
JFIF; JPEG File Interchange Format;
JIF; see JFIF;
JMS; Music format (JMusic file); UltraForce
JOR; Journal file SQL;
JOU; Journal backup; VAX Edt editor
JPC; Graphics; Japan PIC
JPEG; Graphics file JPEG Joint Photography Experts Group format; QPeg - FullView - Display
JPG; see JPEG;
JTF; Fax; Hayes JT Fax
JTF; Graphics (TIFF file with JPEG compression);
JW; Text document; JustWrite
JWL; Library; JustWrite
JZZ; Spreadsheet; Jazz

K

Knn; Database key file; Clarion
K3D; Description of macro language 3DS; 3DS
KAR; Music format (Karaoke);
KAR; Precompiled .prg for KARAT; Rus. FOX+ 2.0
KB; Keyboard script; Borland C++ 4.5
KB; Program source; Knowledge Pro
KBD; Keyboard mapping; LogoScript - Signature - Procomm Plus
KBM; Keyboard mapping; Reflection 4.0
KCL; Lisp source code; Kyoto Common Lisp
KDC; Kodak Digital Camera (graphics); PhotoEnhancer by PictureWorks
KEX; Kedit Macro File; Kedit
KEY; Datafile; Forecast Pro
KEY; Keyboard macros;
KEY; OS/2 archive .key-file (i.e. OS2.KEY); OS/2
KEY; Security file eg. Shareware Registration info;
KIT; Power Chords drum kit file; Power Chord
KML; Kedit Macro Library;
KPP; Toolpad; SmartPad
KPS; Ibm KIPS bitmap graphics;
KRZ; Kurzweil K2000 File; Kurzweil
KYB; Keyboard mapping; FTP Software PC/TCP

L

L; LEX source code file;
L; Linker directive file; WATCOM wlink
L; LISP source code file;
LAB; Datafile; NCSS - SOLO
LAB; Mailing labels ; Q+E for MS Excel
LAN; LAN Drivers; Novell NetWare
LAY; Word chart layout; APPLAUSE
LBG; Label generator data; dBASE IV
LBL; Label; dBASE IV - Clipper 5 - dBFast
LBM; Graphics format (Amiga); Pic-view - Deluxe Paint
LBM; Linear bitmap graphics; XLib
LBO; Compiled label; dBASE IV
LBR; Archive; CP/M LU
LBR; Display driver; Lotus 1-2-3
LBT; Additional (FPT) label description file; FoxPro
LBX; Main (DBF) label description file; FoxPro
LCF; Linker Control File; Norton Guides compiler
LCH; Chart; IBM Works for OS/2
LCK; Lockfile; Paradox
LCL; Data; FTP Software PC/TCP
LCL; Data (FTP Software PC/TCP);
LCN; Lection; WordPerfect
LCS; Datafile; ACT! History Files
LCW; Spreadsheet; Lucid 3-D
LD; Long Distance codes file; Telix
LD1; Overlay file; dBASE
LDB; Data filer database; IBM Works for OS/2
LDB; Overlay file; MS Access
LDF; Data filer form; IBM Works for OS/2
LDF; Library definition file; Geoworks Glue
LE; DOS/4GW executable image; DOS/4GW PM 32X DOS Extender
LES; Lesson (check *.cbt);
LEV; Level file; NetHack 3.x
LEX; Dictionary; MS Word - Lexicon
LFD; LucasArts resource file; LucasArts games
LFT; Laser printer font; ChiWriter
LG; Logo procedure definitions; LSRHS Logo
LGO; Logo for header and footer; SuperFax
LGO; Startup logo code; Windows 3.x
LHA; Archive; LHA/LHARC
LHW; Amiga archive ; LHWARP
LIB; Library file; several programming languages
LIC; License file used by some programs to put their license on disk;
LIF; Archive;
LIF; CA Clipper packed file; CA Clipper installer
LIF; Logical Interchange Format data file; Hewlett-Packard
LIM; Archive; LIMIT
LIN; Line types; AutoCAD
LIS; Listing; VAX
LJ; Text file for HP LJ II printer;
LL3; LapLink III related file (document); LapLink III
LMP; Demo for Doom (computer 3d game); Doom - Doom2
LNG; Language defination file;
LNK; Linker response file; .RTLink
LNK; Linker script;
LNK; Windows 95 shortcut; Windows 95
LOD; Load file;
LOG; Log file;
LPC; Printer driver; TEKO
LRF; Linker response file; MS C/C++
LRP; Report; IBM Works for OS/2
LRS; Language Resource File; WordPerfect for Win
LSA; Lightscape Technologies ASCII;
LSB; Lightscape Technologies Binary;
LSP; LISP language source (autoLISP);
LSP; LISP source code file; Xlisp
LSS; Spreadsheet; Legato - IBM Works for OS/2
LST; Filelist; FRQView
LST; Keyboard macro; 1st Reader
LST; List file (archive index - compiler listfile);
LST; Listing (e.g. source code);
LST; Spool file; Oracle
LTM; Form (Lotus Forms); Lotus
LWD; Text document; LotusWorks
LWOB; Lightwave Object Format;
LWP; Word processor; IBM Works for OS/2
LYR; Lyrics (ASCII);
LZD; Difference file for binaries; LDiff 1.20
LZH; Archive; LHA/LHARC
LZS; Archive; LARC
LZW; Archive; LHWARP

M

M; Macro module ; Brief
M; Source file for MatLab and Mathematica; MatLab - Mathematica
M_U; Backup of boot sector, FAT and boot dir ; MazeGold
M11; Text file ; MASS11
M3; MODULA 3 source code file;
M3D; 3D animation macro;
M4; M4 preprocessor file ; unix
MA; hDC products for MicroApp executable files; MicroApp
MA; Used by Mathematica for its notebooks ; Mathematica
MA3; Macro ; Harvard Graphics 3.0
MAC; Bitmap graphics file; Macintosh MacPaint
MAC; Macro file; Multi Edit
MAG; Woody Lynn's MAG graphics format; MPS Magro Paint System
MAH; Mahjongg Solitaire settings file; Mahjongg Solitaire 2.00
MAI; Mail; VAX
MAK; Makefile;
MAK; Project file ; VB - VC ++
MAN; User guide (manual);
MAP; Color palette file;
MAP; Format data ; Micrografx Picture Publisher
MAP; Linker map file;
MAP; Map ; Atlas MapMaker
MAP; Map file (usually created by compilers);
MAP; Network map ; AccView
MAR; Assembly program ; VAX Macro
MAS; SmartMaster set ; Freelance Graphics
MAT; Data; MatLab
MAX; MAX source code file;
MB; Memo field values for database ; Paradox
MBK; Multiple index file backup; dBASE IV
MBX; Mailbox data; Eudora/ZERBERUS
MCC; Configuration file ; Mathcad
MCD; MathCad file; MathCad
MCF; Font file; Mathcad
MCI; MCI command script; Media Control Interface
MCL; Multi Edit macro library; Multi Edit
MCP; Application script; Capsule
MCP; Printer driver ; Mathcad
MCW; Text file ; MacWrite II
MD; Archive; mdcd10.arc
MDA; Data; MS Access
MDA; MS Access system database; MS Access
MDB; Microsoft DataBase; Microsoft Access
MDL; Model; 3D Design Plus
MDL; Spreadsheet ; CA-Compete!
MDM; Modem definition file ; TELIX
MDR; Microdrive file ; ZX Spectrum emuulator by g.a.lunter
MDT; Data table; MS ILink incremental linker
MDX; Multiple index file; dBASE IV
MDZ; Text description of music module; Cubic Player - Cross-View
ME; MultiEdit configuration; MultiEdit
ME; Text file READ.ME;
MEB; Macro Editor bottom overflow file ; WordPerfect Library
MEC; MECCA source; Maximus
MED; Macro Editor delete save ; WordPerfect Library
MED; Music format; MED/OctaMED
MEM; Macro Editor macro ; WordPerfect Library
MEM; Memory variable save file; dBASE IV - FoxPro - Clipper
MEM; Memos datafile; Clarion
MEQ; Macro Editor print queue file ; WordPerfect Library
MER; Macro Editor resident area (vakioalue); WordPerfect Library
MES; Macro Editor work space file; WordPerfect Library
MES; Message;
MET; Document ; Omnipage Pro
MET; Macro Editor top overflow file ; WordPerfect Library
MET; OS/2 graphics metafile; PICVIEW.EXE
MEU; Menu group ; DOS Shell
MEX; Macro Editor expound file; WordPerfect Library
MEX; MEX file (executable command) ; Matlab
MF; Metafont file; TeX
MFM; Music format; DMP
MGF; Font ; Micrografx
MGF; Materials and Geometry Format;
MGX; Designer 4.1 Drawing; Designer 4.1
MIB; Snmp MIB file;
MID; Standard MIDI file; music synthetizers
MIFF; Magick Image File Format;
MII; Datafile ; MicroStat-II
MIME; Message in MIME format (RFC822);
MIS; Mission, used by many games;
MIX; Object file; Power C
MK; Makefile;
MK; Makefile;
MK; Usually makefile;
MKE; Makefile ; MS Windows SDK
MKG; Makefile;
MKI; Graphics format (Japan MKI);
MKI; Japanese graphics MAKIchan format ; MagView 0.5
MKS; Data; TACT
ML3; Project ; Milestones 3.x
MLB; Macro library file; Symphony
MLI; 3DS Materials Libraries; 3D Studio
MM; Text file ; MultiMate Advantage II
MMF; Mail message file; MS Mail
MMM; Multimedia movie file, RIFF RMMP format; MacroMind Director 3.x
MMO; Memo writer file ; RapidFile
MMP; Output video format from Bravado board;
MND; Menu source ; AutoCAD Menu Compiler
MNG; Map; DeLorme Map'n'Go
MNT; Additional (FPT) menu description file; FoxPro
MNT; Menu memo ; FoxPro
MNU; Advanced macro file ; HP NewWave
MNU; Menu ; AutoCAD Menu Compiler - Norton Commander - Signature
MNU; Microsoft Mouse menu (for DOS apps);
MNX; Compiled menu file ; AutoCAD
MNX; Main (DBF) menu description file; FoxPro
MNY; Account book ; MS Money
MO?; Packed mail; FTN software
MOB; Device definition file ; PEN Windows
MOD; MODULA-2 source code file ; Clarion Modula-2
MOD; Modula language source;
MOD; Module -- used by Windows for DLL which implement DOS support; Win
MOD; Music format (Amiga module); DMP - ST - MDP - VP
MON; Monitor description ; ReadMail
MOV; Animation format (Mac); QuickTime
MOV; Movie file ; AutoCAD AutoFlix
MP2; Mpeg audio file; xing
MP3; MPEG-3 Compressed audio file;
MPC; Calender file; MS Project
MPEG; Animation format; MPEG Player
MPG; see MPEG;
MPM; MathPlan macro ; WordPerfect Library
MPP; Project file ; MS Project
MPR; Generated executable menu file; FoxPro
MPT; Bitmap graphics (Multipage TIFF);
MPV; View file ; MS Project
MPX; Compiled executable menu file; FoxPro
MRB; Multiple Resolution Bitmap graphics file; MS C/C++
MRK; Windows User Benchmark; Win95
MRS; Macro Resource file; WordPerfect for Win
MS; Microsoft antivirus report; MSAV
MSC; Microsoft C makefile;
MSDL; Manchester Scene Description Language;
MSG; Message base (e.g. HMB);
MSG; Message text file (ASCII);
MSG; ZVoice digitized voice file;
MSP; Bitmap graphics file; Microsoft Paint
MSP; Graphics format; Microsoft Paint
MSS; Manuscript text file; Perfect Writer - Scribble - MINCE - Jove
MST; Document; MS Test
MST; Minispecification file; Prosa
MST; Setup script file; MS Windows SDK
MSW; Text file; MS Word
MSX; CP/M archive; MSX
MTH; Math file ; Derive
MTL; Wavefront;
MTM; Music format ; MultiTracker
MTW; Datafile; Minitab
MU; Quattro pro for DOS Menu definition file; Quattro Pro
MUS; Music format (MIDI in Doom);
MUS; Sound file; MusicTime
MVF; Stop frame file ; AutoCAD AutoFlix
MVI; Movie command file ; AutoCAD AutoFlix
MVW; Log file; Saber LAN
MWF; Animation; ProMotion
MXL; PackRat 5.0 support DLLs; PackRat 5.0
MXT; Data; MS C
MYP; Presentation; MM Make Your Point

N

NAM; Name Space Modules; Novell NetWare
NAP; Naplps file (VideoShow); EnerGraphics
NAPLPS; North American Presentation Layer Protocol Syntax;
NB; Text file; Nota Bene
NC; Graphics; netcdf
NC; Instructions for NC (Numerical Control) machine; CAMS
NC; Non-error checking preprosessed Goc source code; Geoworks
NCC; CNC (Computer Numeric Control) control file; CamView 3D
NCD; Norton Change Directory support file; Norton Commander
NDB; Network database; Intellicom - Compex
NDL; Nodelist file;
NDX; Index file; dBASE II - III - IV - dBFast
NEO; Raster graphics file; Atari Neochrome
NET; Network configuration/info file;
netCDF; Network Common Data Format;
NEW; New info;
NFF; Haines Neutral File Format;
NFF; WorldToolKit Neutral File Format;
NFO; Filioview database;
NFO; Help format; Netware Folio
NFO; Info file;
NG; Hypertext Database; Norton Guide
NGO; NG linker object file; NGML
NGS; NG compiler source file; NGC
NITF; National Imagery Transmission Format;
NL; Norton Desktop Icon Library;
NLM; Netware loadable module; Novell Netware
NLX; Form; FormWorx 3.0
NOT; Notation;
NP; Project schedule (Nokia Planner) ; Nokia Planner
NPI; Source for DGEN.EXE intepreter; dBASE Application Generator
NSS; Norton screensaver module; NC - NDW Screen Saver
NST; Music module; Amiga Noise Tracker
NSX; Compound index file; SuccessWare SIX 3.00
NT; Startup files; Windows NT
NTR; Executable ASCII text file (strip header and rename); netrun31.zip
NTS; Executable ASCII text file (strip header and rename); netsend1.zip
NTS; Tutorial ; Norton
NTX; Database index file; Clipper 5
NUF; Message for new users on their 1st call ; Procomm Plus
NWS; Info text file (latest news) (ASCII);
NXT; Sound (NeXT format);

O

O; Object file ; unix - Atari - GCC
O$$; Outfile ; Sprint
OAZ; Fax ; NetFax Manager
OB; Object cut/paste file; IBM LinkWay
OBD; Microsoft Office Binder; MSOffice
OBJ; Compiled machine language code;
OBJ; Object code ; Intel Recolatable Object Module
OBJ; Wavefront Object;
OBR; Object browser data file ; Borland C++
OBS; Script ; ObjectScript
OBT; Microsoft Office Binder Template; MSOffice
OBV; Visual interface ; ObjectScript
OBZ; Microsoft Office Binder Wizard; MSOffice
OCF; Object Craft File; Object Craft
OCR; Incoming fax transcribed to text ; FAXGrapper
OCT; Musical file; Pctalizer
OCX; New Custom Control's format in VB 4.0; Visual Basic
OCX; OLE custom control;
ODIF; Open Document Interchange Format;
ODL; Object Description Language;
ODL; Type library source; Visual C++
OFD; Form definition; ObjectView
OFF; Object File Format vector graphics;
OFF; Object File Format vector graphics file;
OFM; PostScript font description file;
OFN; MS Office documents; MSOffice
OHS; Outbound History; Bink/+
OKT; Music (8 channels) ; Oktalyzer
OKT; Music format ; Oktalyzer
OLB; Object library ; VAX
OLD; Backup file;
OLI; Text file ; Olivetti
OOM; Swap file; Shroom
OPN; Active options ; Exact
OPT; Delphi project options; Borland Delphi
OPT; Optimize support file; QEMM
OPT; "Options; name used by many programs for configuration information";
OPW; Organization chart ; Org Plus for Windows
OPX; Inactive options; Exact
ORA; Parameter file; Oracle
ORG; Calendar file ; Lotus Organizer
ORG; Origin plot; Microcal Origin
OTL; Outline font description ; Z-Soft Type Foundry
OTL; Ventura Publisher's Type Foundry Outline Editor format;
OTX; Text file ; Olivetti Olitext Plus
OUT; Output file;
OV1; Overlay file (part of program to be loaded when needed);
OV2; Overlay file (part of program to be loaded when needed);
OVD; Datafile; ObjectVision
OVL; Overlay file (part of program to be loaded when needed);
OVR; Overlay file (part of program to be loaded when needed);

P

P; Database PROGRESS source code; PROGRESS
P; PASCAL source code file;
P; Picture file; APPLAUSE
P; Rea-C-Time application parameter file; ReaGeniX code generator
P0?; Splitted archive UC2; SAS.EXE
P16; Music (16 channels); ProTracker Studio 16
P22; Patch file (Patch22); Patch22
PA1; Worktable; PageAhead
PAC; SBStudio II Package or Song; SBStudio II
PAC; STAD Image (graphics ?);
PAD; Keypad definition; Telemate
PAK; Archive; Pak
PAL; Pallette file; Microsoft Draw - Win. Paintbrush
PAN; Printer-specific file (copy to coreldrw.ink); CorelDRAW
PAR; Parameter file; Fractint
PAR; PARTS application ; Digitalk PARTS
PAR; Permanent output file ; Windows 3.x
PAS; Pascal language source; Borland Pascal
PAT; Gravis Ultrasound Patch; Convert (c) Villena
PAT; Hatch patterns ; AutoCAD - Photostyler
PAT; Vector fill files ; CorelDRAW
PB; Fax ; FAXability Plus
PB; Phonebook; WinFax Pro
PB; Proboard Conf. files; Proboard
PB; Setup file ; PixBase
PB1; Document ; First Publisher for Windows
PBA; Powerbasic BASIC source code; Genus
PBD; Phone book ; FaxNOW! - Faxit
PBI; Powerbasic include file; Genus
PBI; Profiler Binary Input; MS Source Profiler
PBK; Microsoft Network Phone book; MSN
PBL; Powerbasic library; Genus
PBM; PBM Portable Bit Map graphics format ; Jasc Media C.
PBM; Planar bitmap graphics; XLib
PBO; Profiler Binary Output ; MS Source Profiler
PBT; Profiler Binary Table; MS Source Profiler
PC; Text file containing IBM PC specific info;
PC3; Custom palette ; Harvard Graphics 3.0
PC8; ASCII text IBM8 character set; NewWave Write
PCB; P-CAD database; P-CAD
PCC; Cutout picture vector graphics ; PC Paintbrush
PCD; Graphics format (Kodak Photo-CD);
PCD; Kodak Photo-CD Image graphics file (768x512); hpcdtoppm
PCF; Profiler Command File; MS Source Profiler
PCH; Patch file;
PCH; Precompiled header; MS C/C++
PCJ; Multimedia authoring tool graphics file ; IBM's Linkaway-Live
PCK; Pickfile ; Turbo Pascal
PCL; HP-PCL graphics data file ; HP Printer Control Language
PCS; Microsoft PowerPoint picture package; MS PowerPoint - MS ClipArt Gallery
PCT; Bitmap graphics file ; Macintosh b&w PICT1 - color PICT2
PCW; Text file; PC Write
PCX; PC paintbrush bitmap format; QPeg - Display - ZSoft - PC Paintbrush
PDA; Bitmap graphics;
PDB; Data; TACT
PDB; Packrat 5.0 data file; Packrat 5.0
PDF; Adobe's Portable Document Format; Adobe Acrobat Reader
PDF; Graphics file (ED-SCAN 24bit format);
PDF; Package Definition File;
PDF; PCAD Database Interchange Format; Pdifin.exe - Pdifout.exe
PDF; Print device information Netware;
PDG; Print Shop Deluxe data file;
PDL; Project Description Language file; Borland C++ 4.5
PDS; Pds graphics;
PDS; Planetary Data System Format;
PDS; Pldasm source code file (hardware assembly);
PDV; Printer driver ; Paintbrush
PDW; Document ; Professional Draw
PEB; Program Editor bottom overflow file ; WordPerfect Library
PED; Program Editor delete save; WordPerfect Library
PEM; Program Editor macro; WordPerfect Library
PEQ; Program Editor print queue file; WordPerfect Library
PER; Program Editor resident area ; WordPerfect Library
PES; Program Editor work space file; WordPerfect Library
PET; Program Editor top overflow file ; WordPerfect Library
PEX; Proboard EXecutable file (Executed from PB); Proboard
PFA; PostScript Font File;
PFA; Type 3 font file (unhinted PostScript font);
PFB; Adobe Acrobat document; Adobe Acrobat Reader
PFB; PostScript font; Adobe Type Manager (ATM)
PFC; Text file ; First Choice
PFK; Programmable function keys ; XTreePro
PFM; Windows Type 1 font metric file;
PFS; Database (PFS:FILE) - text file (PFS:Write); PFS
PFT; Printer font ; ChiWriter
PG; Page cut/paste file; IBM LinkWay
PGI; Printer Graphics File device driver; PGRAPH library
PGL; HP Plotter vector graphics format;
PGM; Graphics format (Portable GrayMap); JASC Media C.
PGM; Program ; Signature
PGP; Support file ; Pretty Good Privacy RSA System
PGS; Manual page; man4dos
PH; Optimized .goh file; Geoworks
PH; PERL header file;
PH; Phrase-table ; MS C/C++
PHD; PolyHedra Database;
PHM; Phone book; DN - Lync
PHN; Phone list ; UltraFax - QmodemPro
PHO; Phone database; Metz Phone for Windows
PHR; Phrases ; LogoScript
PIC; 123 Vector graphics format ; CShow - Alchemy - Paint (Pictor)
PIC; Bitmap graphics file ; Macintosh b&w PICT1 - color PICT2
PIC; Lotus picture;
PIC; PIXAR picture file; SDSC Image Tool
PICT; Macintosh Picture;
PIF; OS/2 graphics metafile; PICVIEW.EXE
PIF; Program Information File; Windows 3.x
PIF; Vector graphics GDF format file (IBM mainframe computers);
PiM; Pascal Text Mode Image File; The Ultimate Draw
PIT; Compressed Mac file archive created by PACKIT ; unpackit.zoo
PIX; Alias image file; SDSC Image Tool
PIX; Inset Pix;
PJ; Project ; CA-SuperProject
PJT; Additional (FPT) project description file; FoxPro
PJX; Main (DBF) project description file; FoxPro
PK; PacKed bitmap font bitmap file (TeX DVI drivers);
PKA; Archive; PKARC
PKG; Installer script ; Next
PKG; P-CAD database; P-CAD
PKT; Fido message packet; FTN software
PL; Palette ; Harvard Graphics
PL; PERL source code file;
PL; Prolog source code file;
PL; Property List font metric file ; TeX
PL1; Room plan ; 3D Home Architect
PL3; Chart palette ; Harvard Graphics 3.0
PLB; FoxPro library; FoxPro
PLB; P-CAD library; P-CAD
PLC; Add-in file (functions - macros - applications); Lotus 1-2-3
PLC; P-CAD database; P-CAD
PLL; Prelinked library; CA Clipper
PLN; Spreadsheet; WordPerfect for Win
PLT; HPGL plotter file vector graphics; AutoCAD
PLT; Output file for ploter;
PLT; P CAD: Output file editor for PCPLOT or PCPRINT; P CAD
PLT; Page Magic 2.0 paper format; Page Magic 2.0
PLT; Palette;
PLT; Table for .pll; CA Clipper
PLY; Data; PopMail
PLY; Presentation screen; Harvard Spotlight
PLY; ZipPack;
PM; Bitmap graphics ; Presentation Manager
PM3; PageMaker 3.0 data file; PageMaker 3.0
PM4; Document ; PageMaker 4
PM5; Aldus PageMaker 5.0 publication; Aldus PageMaker
PMC; Graphics ; A4TECH Scanner
PMI; OS/2 V3 SVGA PMI-File; Svga.exe
PMM; Program file ; Amaris BTX/2
PN3; Printer device driver ; Harvard Graphics 3.0
PNG; Portable Network Graphics;
PNM; PBM Portable aNy Map graphics file;
PNT; Macintosh painting;
PNT; Pointlist segment; FTN software
PNT; QWK reader pointer file ; MarkMail 2.x
POH; Optimized .goh file; Geoworks
POL; InnovMetric Software Polygon Models Format;
POP; Messages index; PopMail
POP; Pop-up menu object ; dBASE Application Generator
POV; Raytraced graphics image ; Persistence Of Vision
POW; Power Chords instrument/song file; Power Chords
PP; Amiga archive; POWERPACKER
PPB; Button bar for Print Preview ; WordPerfect for Win
PPD; PostScript printer description file;
PPK; Archive (using for many distributives); PPK
PPL; PolaroidPalettePlus ColorKey device driver ; Harvard Graphics 3.0
PPM; Graphics format (Portable PixelMap); JASC Media C.
PPO; Preprocessor output; CA Clipper 5.*
PPP; Publication ; PagePlus
PPS; Storyboard ; Personal Producer
PPT; General file extension ; PowerPoint
PPT; Presentations; Microsoft
PR1; Packrat 4.0 data file; Packrat 4.0
PR2; Packrat 4.x data file; Packrat 4.x
PR2; Presentation ; Aldus Persuasion 2.x
PR2; Printer driver; dBASE IV
PR3; PostScript printer driver; dBASE IV
PR3; Presentation; Aldus Persuasion 3.x
PRD; Printer driver;
PRE; Presentation ; Freelance Graphics
PRE; Settings ; Programmer's WorkBench - MS C/C++
PRF; CheckIt Pro v1.0 data file; CheckIt Pro 1.0
PRF; Pixel Run Format graphics file ; Improces - Fastgraph
PRF; Printer driver ; dBASE IV
PRF; Profiler output;
PRG; Program ; Atari
PRG; Program source; dBASE IV - FoxPro - Clipper 5 - dBFast
PRG; Program source code (e.g. Clipper language); CA Clipper
PRI; Printer definitions ; LogoScript
PRJ; Borland C++ IDE project file; BC.EXE - BCW.EXE
PRM; Parameters;
PRN; Printer driver ; Signature
PRN; Text file ; Lotus 1-2-3 - Symphony
PRN; Usually printer output file;
PRO; Graphics profile file; DOS
PRO; Proboard conf. file; Proboard
PRO; "Profile; used by many programs to store configuration data";
PRO; Prolog language source;
PRO; PROLOG source code file;
PROJ; Project File (Interface Builder); NeXT
PRR; The Perfect Resume data file; Perfect Resume
PRS; Norton Viewer DLL file;
PRS; Presentation ; Harvard Graphics Win
PRS; Printer Resource eg. fonts ; WordPerfect for Win
PRS; Procedure; dBASE IV
PRT; P-CAD component; P-CAD
PRT; Printer driver; Dr.Halo
PRX; Compiled program ; FoxPro
PS; Document in PostScript format; adobe
PSA; Archive (Pretty Simple Archive); PSA.OUT (GNU)
PSD; Periscope Debbuger Def file; Periscope
PSD; Photoshop bitmap file; Photoshop
PSE; see PSEG;
PSEG; Bitmap graphics; IBM printer Page SEgment
PSF; Outline PostScript printer font ; ChiWriter
PSM; Music format (Protracker Studio Module); Protracker - MASI
PSM; Symbol table of IDE ; Turbo Pascal
PSN; Presentation file for Sound Script; Win
PSP; Procedure ; Prodea Synergy
PST; Postbox file; BMail
PT; Game crack; Player Tools
PT; Kodak Precition Color Management System;
PT3; Device driver ; Harvard Graphics 3.0
PT3; Template ; PageMaker 3
PT4; Template; PageMaker 4
PT5; Aldus PageMaker 5.0 publication template; Aldus PageMaker
PTB; Script ; PubTech BatchWorks
PTM; Macro ; PubTech BatchWorks
PTM; Music format;
PTM; Page Magic 2.0 template; Page Magic 2.0
PTR; OS/2 cursor image file; ICONEDIT.EXE
PTR; QWK reader pointer file ; QMail
PTU; Performer Terrain Utilities;
PUB; Page template; MS Publisher
PUB; Public key ring file ; Pretty Good Privacy RSA System
PUB; Publication ; Ventura Publisher - 1st Publisher
PUT; Archive; PUT
PUT; Graphics format; WScan
PVD; Script ; Instalit
PVL; Library ; Instalit
PVT; Local Fidonet pointlist; FTN software
PW; Text file ; Professional Write
PWL; Password List;
PWP; Text document ; Professional WritePlus
PX; Paradox 3.0 file; Paradox 3.0
PXP; 3DS Process file; 3D Studio
PY; PYTHON script file;
PYC; Compiled PYTHON script file;
PZD; Default settings ; Pizazz Plus
PZI; Graphics format; PZP
PZO; Overlay file ; Pizazz Plus
PZP; Palette ; Pizazz Plus
PZS; Settings ; Pizazz Plus
PZT; Transfer file ; Pizazz Plus
PZX; Swap file ; Pizazz Plus

Q

QAG; Quick Access Group ; Norton Desktop
QAP; Application; Omnis Quartz
QBE; Saved query (Query By Example); dBASE IV - Quattro Pro
QBO; Compiled query; dBASE IV
QBW; Spreadsheet ; QuickBooks for Windows
QDn; Data file - segment n; Omnis Quartz
QDK; Backup of startup files created by Optimize ; QEMM
QDV; Graphics file ; Steve Blackstock Giffer
QEF; Query file ; Q+E for MS Excel
QFX; Fax ; QuickLink
QLB; Quick library ; MS C/C++
QLC; ATM Type 1 fonts script; Adobe Type Manager
QLP; Printer driver ; QuickLink
QM4; Options or services file ; QMail 4.x Mail Door
QPR; Generated query program ; FoxPro
QPR; Print queue device driver ; OS/2
QPX; Compiled executable QBE query file; FoxPro
QRS; Equation Editor support file; WordPerfect for Win
QRT; Graphics format (QRT ray tracing);
QRY; Query; dBASE IV
QT; QuickTime movie (animation);
QTVR; QuickTime VR Movie;
QWK; QWK reader message file;
QXD; Document ; QuarkXPress
QXL; Element library ; QuarkXPress

R

R; RATFOR (FORTRAN preprosessor) file;
Rnn; Multi volume RAR archive; RAR
R2D; Reflex 2 datafile; Reflex 2
R8; Raw graphics file (one byte per pixel) plane one; PicLab
R8P; PCL 4 bitmap font file; Intellifont
RA; Remote Access conf. files; RA
RAD; 2-op FM music; Reality AdLib Tracker
RAD; Radience;
RAM; Ramfile; RealAudio
RAR; Archive; RAR
RAS; Graphics format; SUN Raster
RAT; Datafile (RATS);
RAW; PCM Signed Raw Sound File;
RAY; Rayshade;
RBF; Datafile ; Rbase
RC; Configuration file ; emacs
RC; Resource Compiler script file; MS C/C++ - Borland C++
RC; UUPC configuration files; UUPC
RC; Windows resource compiler script; RC.EXE -Resource WorkShop - OS/2
RCG; Netscape newsgroup file (netsc.rcg);
RDF; Compiled UIC source code; Geoworks UI Compiler
RDI; Device-independent bitmap file (RIFF RDIB format);
RDX; Datafile ; Reflex
REC; Archivation protocol; ARCSERVE
REC; Datafile ; EpiInfo
REC; Record file ; Sprint
REC; Windows Recorder Macro File; WinRecorder
RED; Path info ; Clarion Modula-2
REF; Cross-reference;
REG; OLE Registration file ; Windows 3.x
REG; Registration information or key;
REM; Remarks;
REM; Remarks definition; Sourcer
REP; QWK reader reply file;
REP; Report; Report Designer - CodeReporter - DataBoss
REP; Report file used by many applications;
REQ; File request; FTN Software
RES; Compiled resource; MS C/C++ - Borland C++
RES; DBASE resources ; dBASE IV
RES; Windows compiled resource package; Win
REV; Revision file; Geoworks
REX; PharLab executable file (old format); PharLab
REX; Report definition; Oracle
REX; Rexx language source file; Rexx
REZ; Resource file;
RF; Sun raster graphics file;
RFT; DCA/RFT Revisable Format Text file; IBM DisplayWrite 4.0-5.1
RGB; SGI RGB image file (RAW); SDSC Image Tool
RGX; Symbol tables etc. info; ReaGeniX code generator
RH; Resource header file; Borland C++ 4.5
RH; Windows resource file header; RC.EXE
RI; Data; Lotus 1-2-3
RIB; Graphics (Renderman Interface Bytestream); 3D Reality
RIC; Fax ; Ricoh
RIF; RIFF bitmap graphics (Resource Interchange File Format); Fractal Design Painter
RIP; TeleGrafix Remote Imaging Protocol; Maximus 3.0
RIX; Graphics (ColoRIX Image File); ColoRIX
RL4; Bitmap graphics;
RL8; Bitmap graphics;
RLA; Wavefront raster image file; SDSC Image Tool
RLB; Data hgw.rlb; Harvard Graphics Win
RLC; Graphics 1bit/pixel scanner output;
RLD; Norton Commander 5.0 temp file; NC 5.0
RLE; Utah Run Length Encoded rasterfile graphic file ; SDSC Image Tool
RLZ; REALIZER source code file ; CA-Realizer
RMI; Windows alternate synthesized sound format; RIFF RMID format
RMK; Make file; CA Clipper - RMAKE
RN; XPL program for Nota Bene users;
RND; Rendering Slide ; AutoCAD AutoShade
RNO; Runoff file ; VAX
ROL; FM music Adlib Music File ; Roland
ROM; Read Only Memory image in emulators, AONs, etc.;
RPB; Data report file used by CP Backup; CP Backup
RPD; Database ; RapidFile
RPF; AutoCAD pattern; ACAD
RPL; Text document; Replica
RPT; Report file used by many applications;
RS; Data file ; Amiga Resource - Reassembler
RS_; Resource fork of a Macintosh file ; Mac-ette
RSC; Resource file; ViewMax - many
RSL; Resource Library used by PC Tools for Windows; PC Tools - Win
RSP; Responce File; OS/2
RSP; Responce file (text file containing input expected by eg. LINK);
RTF; Rich Text Format text file (help file script); many - MS Word
RTFD; RTF-Packet; NeXT
RTL; Run-Time library; Norton Utilities
RTL; Text file;
RTP; RTPatch software update package data file; Pocket soft patch
RTS; Realizer executable file;
RTS; Runtime library file ; CA-Realizer
RUL; Echo-conference rules;
RUN; PC Tools for Windows batch file; PC Tools
RUS; Russian text;
RV; Mobile pricelist data file; Mobile
RVW; Review;
RWS; Borland Resource Workshop symbol file; Resource Workshop
RWS; Resource Workshop data file ; Borland C++
RWX; Criterion RenderWare;
RWX; MEME Shape File;
RWX; Script; RenderWare
RXD; Reflex 1 datafile; Reflex 1

S

S; ASSEMBLY source code file ; unix
S; Multi Edit macro file source; Multi Edit
S$$; Temporary sort file ; Sprint
S1K; S1000 Simnet Format;
S3I; Digiplayer/ST3 Sample File; Digiplayer - ST3
S3M; Music (16 channels); Scream Tracker 3.0 - DMP
SA?; Packed mail; FTN software
SAF; see SAIF;
SAIF; Spatial Archive Interchange Format;
SAL; Datafile ; SORITEC
SAM; Ami Pro data file; Ami Pro
SAM; Text file; Samna - Lotus Ami/Ami Pro
SAR; Archive; SAR
SAT; ACIS;
SAV; Backup file (saved file);
SAV; Configuration;
SAV; Saved game situation ;
SB; Audio file (signed byte);
SBD; Storyboard ; Storyboard Editor
SBI; Sound Blaster Instrument file (Creative Labs);
SBK; Emu SoundFont Bank (AWE32 Bank); Convert (c) Villena
SBL; Stony Brook Pascal library; SB Pascal
SBP; DML program ; Superbase 4
SBR; Support file ; Source Browser
SBT; Notes related to record ; Suberbase 4 Windows
SC; Display driver; Framework II
SC; PAL script ; Paradox
SC; Script; Borland Paradox
SC3; Renamed dBASE III screen mask file ; dBASE IV
SC3; Screen device driver ; Harvard Graphics 3.0
SCA; Datafile; SCA
SCC; Text file;
SCD; SCODOL film recorder (Scan Conversion Object Description Language); SCODOL
SCF; Multimedia show ; ScoreMaker
SCF; Spelling checker configuration file ; Symphony
SCH; Project schedule ; Schedule Publisher
SCH; Scheme; P CAD - Orcad
SCI; Fax ; SciFax
SCI; System Configuration Information;
SCM; Scheme source code file;
SCN; SCeNe RTrace;
SCN; Screen file ; Kermit
SCO; High score;
SCO; High score;
SCP; Script; BITCOM
SCR; Any other screen system;
SCR; DEBUG source code file; DOS Debug
SCR; Forth screen (source) file; Forth
SCR; Screen - screen snapshot ; dBASE IV - Procomm Plus
SCR; Screen font ; LogoScript
SCR; Screen saver ; Windows 3.x
SCR; Screen snapshop ;
SCR; Script file source; TeleMate - Kermit - 1st Reader
SCT; Additional (FPT) screen description file; FoxPro
SCX; Chart ; Stanford Chart
SCX; Graphics format; ColoRIX
SCX; Main (DBF) screen description file; FoxPro
SCY; Security file; ReaGeniX
SDA; Fidonet's Software Distribution Network file archive description;
SDF; Source definition file; Sourcer
SDF; System Data Format file (fixed lenght ASCII text);
SDI; Software Distribution Network Info file;
SDK; Roland S-550/S-50/W-30 Disk Image;
SDL; Alias Wavefront Scene Description Language;
SDML; Spacial Data Modeling Language;
SDN; Software Distribution Network compressd file archive ; pak251.exe
SDS; MIDI Sample DUMP Standard File;
SDTS; Spatial Data Transfer Standard;
SDW; Ami Draw Symbol File;
SDX; Sample DUMP Exchange File;
SEA; Self-Extracting compressed Macintosh file Archive;
SEC; ----- compressed file;
SEC; Diskreet encrypted file; Diskreet
SEC; Secret key ring file ; Pretty Good Privacy RSA System
SEC; Secured animation file; Disney Animation Studio
SEP; Printer separator page;
SEQ; Atari animation file;
SEQ; Sequential Instruction File ; Bubble Chamber
SES; Session info ; Clarion Modula-2
SET; Configuration file ; 1st Reader
SET; Driver sets created by Install ; Symphony
SET; Extension used by Norton Backup and CPS Backup for setup info; Norton Backup - CPS Backup
SET; Setup options file;
SF; IRCAM Sound File ; CSound package - MixView sound sample editor
SF; WPS attribute storage (OS/2 WorkPlace Shell) wp_root.sf; OS/2 WorkPlace Shell
SFB; HP Soft font (obsolete under Windows);
SFF; Scene File Format;
SFI; Graphics ; SIS Framegrabber
SFI; Printer font (HP LaserJet landscape); Ventura Publisher
SFL; PCL 4 bitmap font (landscape); landscape - Intellifont -Ventura Publisher
SFN; Font ; SPX
SFO; Bitstream font file - fontware format;
SFP; PCL 4 bitmap font ; portrait - Intellifont - Ventura Publisher
SFS; PCL 5 scalable font file ; Intellifont
SFT; Screen font ; ChiWriter
SFX; SFX (self-extracting archives) script; RAR
SG1; Graphics ; Stanford Graphics
SGF; Document with graphics ; Starwriter
SGI; Graphics file ; IRIS - Silicon Graphics
SGP; Statistics; STATGRAPHICS Plus
SGT; Save/get keyboard macro ; Signature
SH; ASCII archive; SHAR
SH; Unix shell script;
SH3; Presentation; Harvard Graphics 3.0
SHAR; Archive; UNSHAR (Unix)
SHB; Background ; CorelShow
SHG; Segmented Hyper-Graphic;
SHK; Apple II archive; SHRINKIT
SHM; Shell macro ; WordPerfect Library
SHP; Shape file and source file for text fonts; AutoCAD
SHR; see SHAR;
SHT; HTML format for WWW; NetScape
SHW; Presentation ; Harvard Graphics 2.0 - CorelShow
SHW; Slide show ; WordPerfect Presentations
SHX; Shape entities ; AutoCAD
SIF; Setup Installation Files info; Windows NT Setup
SIG; Current program settings ; Signature
SIG; Signature file; ThunderByte AntiVirus - PopMail
SIK; Backup file (Sicherungskopie); MS Word
SIT; Archive (Macintosh); STUFFIT
SKY; SYLK Spreadsheet file (used by Multiplan);
SL; S-Lang source code file;
SLB; P-CAD library (symbols); P-CAD
SLB; Slide library; AutoCAD
SLC; SALT (script from Telix) compiled code; Telix
SLD; Slide ; AutoCAD
SLI; Slide ; MAGICorp Slide Service
SLK; MS Excel import format; MS Excel
SLK; SYLK Symbolic Link format data file ; MultiPlan
SLL; Sound data file;
SLT; SALT Script Application Language for Telix script source; Telix
SM; Maillist ; SoftSpoken Mailer
SM; Script ; ScriptMaker
SM; SMALLTALK source code file;
SM; Text file ; Samna Word
SMF; Fax ; SMARTFAX
SMM; Ami Pro Macro File; Ami Pro
SMN; Font (ParaGraph's WorkScript format);
SMP; Sample (sound file);
SMP; Samplevision File; Samplevision
SMT; Text file ; Smart Ware II
SN; Compressed song file; Sound Club editor
SND; Digitized sound file ; Macintosh/ATARI/PC
SND; Power Chords drum sound file; Power Chord
SNG; Song (midi sound); Midisoft Studio - Prism
SNO; SNOBOL4 source code file;
SNP; Book-shelf for .BOO; READIBM
SNP; Output video format from Computer Eyes equipment;
SOL; Solution eg. game walkthroughs;
SOM; Network serial numbers; Quattro Pro
SOM; Sort information; Paradox
SON; Song; SBStudio II
SOU; SBStudio II Sound File; SBStudio II
SOU; Sound data (sound tool);
SP; Archive (unix); SPLINT
SPC; Program; MS Multiplan
SPC; Temporary file ; WordPerfect for Win
SPD; Scalable font ; Speedo - Harvard Graphics 3.0
SPF; Slide presentation file ; EnerGraphics
SPG; Glossary ; Sprint
SPI; Graphics (Siemens and Philips scanner);
SPIFF; Still Picture Interchange File Format;
SPL; Archive ; SPLINT
SPL; Customized printer driver ; Sprint
SPL; Personal spell dictionary ; Signature
SPL; Print spooling file ; Windows 3.x
SPL; Sample;
SPM; Data wp{wp}.spm; WordPerfect
SPP; Printer file ; Sprint
SPR; Document letter ; Sprint
SPR; Generated executable screen file; FoxPro
SPR; Sprite;
SPR; Story Board sprites;
SPS; Screen driver ; Sprint
SPS; SPSSx source code file; VAX/VMS
SPT; Data support file (MITAC disk/system management utility pack); MITAC disk/system management utility pack
SPT; SPITBOL source code file;
SPW; Worksheet; SigmaPlot
SPX; Compiled executable screen file; FoxPro
SQD; Squish message base; Squish
SQI; Squish message base index; Squish
SQL; SQL language code; Any SQL database
SQL; Squish message base lastread pointers; Squish
SQZ; Archive; SQUEEZE
SQZ; FOXPRO Squeeze file; FOXPRO
SRC; Multi-edit source; Multi-Edit
SRC; Source ; DataFlex
SRF; Sun Raster File graphics file;
SRP; Script ; QuickLink
SS; Bitmap graphics ; Splash
SS; Screen saver; DN
SSD; Datafile ; SAS/PC
SSP; Datafile ; SAS Transport
ST; Instrument library ; Scream Tracker
ST; SMALLTALK source code file ; Little Smalltalk
ST; Stamp ; NeoPaint
STA; Data file; Statistica
STA; Saved state ; Reflection 4.0
STA; Stack ; Spinmaker Plus
STB; Stub library; Genus GX Kernel
STD; Standard (something..); LogoScript
STD; State Transition Diagram graphic file; Prosa
STF; Archive; SHRINKTOFIT
STL; Stereolithography Interface Format;
STM; Music format (4 channels) (Scream Tracker Module); ST - DMP
STM; State Transition Diagram model file; Prosa
STO; Pascal stub OBJ file; Genus GX Kernel
STR; Gate3 table structure file;
STR; Structure list object file ; dBASE Application Generator
STS; Music format (Scream Tracker Song); ST 2.0-2.3
STS; Project status info ; MS C/C++
STW; Data file; SmartTerm for Windows
STX; Electronic book; SmarText
STX; Music format;
STX; Tax form; CA-Simply Tax
STY; "Ami Pro Template (Style); used by other programs for `styles`"; Ami Pro
STY; Style library or sheet; many
SU?; Packed mail; FTN software
SUI; SUIT library ; Simple User Interface Toolkit
SUM; Summary;
SUN; Sun rasterfile graphics file;
SUP; Supplementary dictionary ; WordPerfect for Win
SVD; Autosave file for document ; MS Word
SVG; Autosave file for glossary ; MS Word
SVQ; Music format;
SVS; Autosave file for style sheet ; MS Word
SW; Audio file (signed word);
SWG; SWAG Pascal Snippets file; SWAG
SWP; Document backup ; Sprint
SWP; Swap file;
SXP; 3DS Process file; 3D Studio
SY1; SmartPix symbol library ; Ami Pro
SY3; Harvard Graphics format;
SY3; Symbol file ; Harvard Graphics 3.0
SYD; Backup of startup files created by QEMM (?) autoexec.syd;
SYD; Sysedit backup file; Sysedit
SYM; Compiler symbolic information file;
SYM; P-CAD component (symbols); P-CAD
SYM; Precompiled headers ; Borland C++
SYM; Program symbol table ; Power C - MS ILink incremental linker
SYM; Symbol file ; Harvard Graphics 2.0 - MS Windows SDK
SYN; SDSC Synu image file; SDSC Image Tool
SYN; Synonym file; MS Word 5
SYS; Datafile ; SYGRAPH - SYSTAT - SPSS/PC
SYS; System file - device driver or hardware configuration info ; DOS
SYW; Graphics file (symbol); Harvard Graphics Win
SYW; Yamaha SY-85/SY-99 Wave File; Convert (c) Villena

T

T; Archive without compression (tape); tar
T; TADS source;
T; Tester symbol table; ReaGeniX code generator
T?H; Turbo Help file (Pascal, C, Assembler, ...); Borland Thelp
T44; Temporary file for Sort or Index ; dBASE IV
T64; Program; C64S emulator
TAG; Query tag name ; DataFlex
TAH; Help file for Turbo Assembler ; Borland C++
TAL; Adobe Type Align; Adobe
TAL; Text illustration ; TypeAlign
TAP; Tape file ; ZX Spectrum emulator by g.a.lunter
TAR; Archive; TAR
TAZ; Archive; WinZipNT - TAR - COMPRESS
TB1; Font file; Borland Turbo C
TB2; Font file ; Borland Turbo C
TBF; Fax ; Imavox TurboFax
TBK; FOXPRO template backup file; FOXPRO
TBK; Memo backup; dBASE IV - FoxPro
TBK; Toolbook; Asymetrix ToolBook
TBL; Aldus TableEditor file; TableEditor
TBL; Gate3 table file;
TBL; Graphics file (native format); PageMaker TableEditor
TBL; "Short for Table; used by many programs";
TBL; Table of values; OS/2
TBR; Norton Desktop custom toolbar; NDW
TBS; Text elements ?? (Textbausteine); MS Word
TBX; Table ; Project Scheduler 4
TC; Configuration ; Turbo C - Borland C++
TCH; Help file ; Turbo C - Borland C++
TCL; Tool Command Language source code; Swat
TCW; Drawing; TurboCAD for Windows
TD; Config from Turbo Debugger; Turbo Debugger
TD0; Compressed diskette in a file ; Teledisk
TD2; Configuration file; Turbo Debugger for Win32
TDB; Database ; TACT
TDDD; Imagine Object File Format;
TDF; Speedo font file;
TDF; Typeface definition file ; Speedo
TDH; Help file for Turbo Debugger ; Borland C++
TDK; Keystroke recording file ; Turbo Debugger
TDR; Contens of Arvid tape;
TDS; Symbol table ; Turbo Debugger
TDW; Configuration file; Turbo Debugger for Windows
TEF; Fax ; Relisys TEFAX
TEL; Host file ; Telnet
TEM; Input template ; IconAuthor
TEM; Turbo Editor Macro Language script ; Borland C++
TET; Tetris results; DN
TEX; Datasheet ; Idealist
TEX; TeX text file ; Scientific Word - TeX
TEXT; Text file;
TF; Configuration ; Turbo Profiler
TFA; Area file ; Turbo Profiler
TFC; Catalogue file ; Tobi's Floppy Cataloguer
TFH; Help file for Turbo Profiler ; Borland C++
TFM; Tagged font metric file ; Intellifont
TFM; TeX Font Metric file; TeX
TFS; Statistical information ; Turbo Profiler
TG1; Project file; On Target
TGA; Targa True Color bitmapped format;
TGZ; Archive; WinZipNT - TAR - GNUzip
TH?; Packed mail; FTN software
THE; Windows'95 Desktop Theme; Microsoft Plus
THM; Picture Publisher or PhotoMagic Thumbnail;
THS; Thesaurus dictionary; WordPerfect for Win
TIC; FTN special file with assotiated file description; ALLFIX
TIF; see TIFF;
TIFF; TIFF (tagged image format file) bitmapped file; Alchemy - PhotoStyler -PageMaker - CorelDRAW
TIL; Fuzzy logic knowledge base ; Togai InfraLogic Fuzzy-C Compiler
TIS; Tile set; MahJongg 3.0
TJL; Backup file; VAXTPU editor
TLB; Reference table ; Bubble Chamber
TLB; Text library; VAX
TLB; Type library; Visual C++
TLC; Compiled Tool Command Language source code; Swat
TLD; Disk Image; Teledisk
TLP; Project ; TimeLine
TMF; Tagged Font Metric file; WordPerfect for Win
TMO; ZTG global optimizer default output file ; Zortech C++
TMP; Temporary file;
TMS; TeleMate compiled script; TeleMate
TOC; Table Of Contents text file (ASCII);
TOK; Borland C++ 4.x reserved word list; BCW.EXE
TOS; Self-extracting file archive (Atari ST);
TP; Session-state file; Turbo Profiler
TP; Turbo Pascal cfg file; Turbo Pascal
TP3; Template ; Harvard Graphics 3.0
TPB; Downloadable PCL Soft font file backup; HiJaak
TPF; Downloadable PCL Soft font file ; HiJaak
TPH; Help file ; Turbo Pascal
TPL; Resident units library ; Turbo Pascal
TPL; Template ; Harvard Graphics 2.0
TPL; Template file; GoldEd -ITrack
TPP; Protected Mode Units ; Borland Pascal 7.0
TPU; Borland Pascal DOS Mode Library; Borland Pascal
TPU; Command file (VAXTPU editor); VAXTPU editor
TPW; Borland Pascal Windows Library; Borland Pascal
TPW; Session-state file; Turbo Profiler for Windows
TPZ; Archive; TAR - GNUzip
TR; Man page input suitable for troff -man ; cawf2.zip
TR; Session-state settings; Turbo Debugger for DOS
TR2; Session-state settings; Turbo Debugger for Win32
TRC; Debug support file; Power CTrace
TRE; Directory tree file; PC-Tools
TRIF; Tiled Raster Interchange Format;
TRK; Track (i.e. video sequence), used by many games;
TRM; Terminal settings ; Windows 3.x
TRN; Translation support file; Quattro - Clarion
TRS; Executable file ; Micrografx
TRU; True Basic source file;
TRW; Session-state settings; Turbo Debugger for Windows
TSM; Turbo Assembler Manual; TASM for OS/2
TST; Printer test file ; WordPerfect for Win
TSV; Tab Separated Values;
TTF; TrueType Font file;
TU?; Packed mail; FTN software
TUD; The Ultimate Draw file; The Ultimate Draw
TUT; Tutorial;
TV; Table view settings ; Paradox
TVn; Overflow file above insert point in Doc n; WordPerfect for Win
TVF; Table view settings; dBASE
TXF; Archive; TAR and FREEZE
TXI; Support file; TeX
TXT; Common name for ASCII text file;
TXW; Yamaha TX-16W Wave File; Convert (c) Villena
TYM; Time Stamp (PageMaker 4); PageMaker 4
TZ; Archive; TAR - COMPRESS
TZB; Archive; TAR - COMPRESS - BTOA

U

U8; Sample;
UB; Audio file (unsigned byte);
UC2; Archive; UC II
UCN; New archive; UC II
UDF; Filter; Photostyler
UE2; Encrypted archive; UC II
UHS; Universal Hint System (binary file);
UI; Espire source code file; Geoworks UI Compiler
UI; User interface; Sprint
UIF; Long prompts for windows; WordPerfect for Win
UIH; Espire header file; Geoworks UI Compiler
UL; ULAW audio file;
ULD; Information about uploaded files ; Procomm Plus
ULT; Music ; UltraTracker
UMB; Backup file; MemMaker
UNI; Datafile ; Forecast Pro
UNI; Music format; UNIMOD - MIKMOD
UNX; Text file containing UNIX specific info;
UPD; Update data; dBASE
UPD; Update info (new features in program);
UPO; Compiled update data ; dBASE
URT; Utah Raster Toolkit;
USE; Log file;
USP; Printer font with USASCII extended character set ; PageMaker
USR; User database file ; Procomm Plus - Turbo C++ tour
UU; Encoded file (ASCII); UUENCODE/UUDECODE
UUE; Encoded file (ASCII); UUENCODE/UUDECODE
UW; Audio file (unsigned word);
UWF; UltraTracker WaveSample; UltraTracker

V

V; Consistency check support file; ReaGeniX code generator
V; Main input file for an image ; Vivid 2.0
VAL; Validity checks and referential integrity ; Paradox for Windows
VAL; Values list object file; dBASE Application Generator
VAN; Animation; VistaPro
VAP; Value Added Process; NetWare 2.xx
VAR; Variable file ; IconAuthor
VBR; Visual Basic Custom Control file; Visual Basic
VBX; Visual Basic eXtension; Visual Basic
VBZ; Visual Basic Setup Wizard Template; Setup Wizard
VC; Include file with color definitions ; Vivid 2.0
VC; Spreadsheet ; VisiCalc
VCA; Visual Clip Art;
VCR; VCR drivers for Arvid;
VCW; Visual workbench information ; MS Visual C++
VCX; Spreatsheet ; VisiCalc Advanced
VDA; Bitmap graphics;
VDO; Story Board video image; Story Board
VDR; Drawing; ComputerEasy Draw
VEW; GroupWise for Windows; Win
VEW; View file ; Clipper 5 - Lotus Approach
VFA; FontLab Database file; FontLab
VFM; Ventura Font Metrics file;
VFM; Voting Form; Voter
VFN; Voting Form for Customers; Voter
VGA; VGA display driver;
VGA; VGA display font;
VGD; VGA display driver; Generic CADD
VGR; Graphics file ; Ventura Publisher
VI; Graphics file ; Jovian Logic VI
VI; Watcom editor script; VI.EXE
VIC; see VICAR;
VICAR; Graphics (Video Image Communication and Retrieval);
VID; Bitmap graphics (YUV12C M-Motion Frame Buffer);
VID; Graphics format; Word&Deed
VID; MS-DOS Shell Monitor file; MS-DOS 5
VID; Screen device driver ; Word
VIF; see VIFF;
VIFF; Khoros Visualization Image File Format; SDSC Image Tool
VIK; Graphics format (VIKING);
VIR; Virus or infected file;
VIS; VIS graphics file;
VLM; Virtual Loadable Module; Netware
VM; Virtual Memory file; Geoworks
VMC; Virtual memory configuration; DOS/4GW PM 32X DOS Extender
VMF; Font characteristics ; Ventura Publisher
VMS; Text file containing VMS specific info;
VO; Include file with object definition ; Vivid 2.0
VOC; Sound format (Creative Lab's Sound File); PlayVoc
VOF; Object folder ; VZ Programmer
VP; 3DS Video posting; 3D Studio
VPF; Vector Product Format;
VPG; Graphics file ; VPGraphics
VPH; Virtual Pascal Help; VP/OS2
VPI; Virtual Pascal Unit; VP/OS2
VRM; Overlay file ; QuattroPro
VRM; Visual rexx source; WATCOM VREXX
VRML; Virtual Reality Modeling Language; NetScape
VRP; Project; WATCOM VXщRexx
VRS; Video Resource eg. video device driver ; WordPerfect
VS; Include file with surface definition ; Vivid 2.0
VSD; Diagram ; Shapeware Visio
VSD; Visio drawing; Visio
VSM; Simulation model ; VisSim
VSP; Sprite ; SPX
VSS; SmartShapes file ; Shapeware Visio
VSS; Visio Template; Visio
VST; Truevision Vista graphics file;
VST; Visio Template; Visio
VUE; Animation ; 3D Studio
VUE; View ; dBASE IV - FoxPro
VW; Text file ; Volkswriter
VWR; File viewer file ; PC Tools
VXD; Windows 3.x virtual device driver; Windows 3.x

W

W; Word chart file ; APPLAUSE
W30; Printer font; AST TurboLaser - Ventura Publisher
W31; Startup file; Windows 3.1
W40; Something for Windows95 (e.g. config.w40); Win95
W44; Temporary file for Sort or Index ; dBASE
W95; Something for Windows95; Win95
WAD; War Allocation Daemon; Doom - Doom2
WAS; ProComm Script File (source code); ProComm
WAV; Sound format (Microsoft Windows RIFF WAVE); Media Player
WAX; ProComm compiled script; ProComm
WB1; Notebook ; Quattro Pro
WB2; Spreadsheet; Quattro Pro
WBF; MS Windows Batch File ; Catch
WBK; Document/workbook ; WordPerfect for Win
WBT; Norton Desktop; Norton Desktop
WBT; Wilsonware Batch file; Winbatch
WCD; Macro token list ; WordPerfect for Win
WCH; WordPerfect Macro Facility; WP
WCM; Data transmission file ; MS Works
WCM; Macro ; WordPerfect for Win
WCP; Product information description; WordPerfect for Win
WD; InfoSelect Data file;
WDB; Database; MS Works
WE?; Packed mail; FTN software
WEB; WEB source code file;
WebOOGL; Web Object Oriented Graphics Library;
WFM; Form object; dBASE Form Designer
WFN; Font ; CorelDRAW
WFX; Data file ; Winfax
WG1; Worksheet ; Lotus 1-2-3/G
WG2; Worksheet ; Lotus 1-2-3 for OS/2
WID; Width table ; Ventura Publisher
WIN; Window file; FoxPro - dBASE
WIZ; Page wizard ; MS Publisher
WK1; Spreadsheet ; Lotus 1-2-3 version 2.x - Symphony 1.1+
WK3; Spreadsheet ; Lotus 1-2-3 version 3.x
WK4; Spreadsheet ; Lotus 1-2-3 version 3.4
WKB; Document ; WordPerfect for Win
WKE; Spreadsheet ; Lotus 1-2-3 educational version
WKI; Spreadsheet format; Lotus 123 2x
WKQ; Spreadsheet ; Quattro
WKS; Spreadsheet ; Lotus 1-2-3 version 1A - Symphony 1.0 - MS Works
WKS; Workspace ; Xlisp
WKZ; Spreadsheet format; Dos Navigator
WLK; Graphics ; Virtus Walkthrough
WMC; Backup of startup files by Windows MathCad autoexec.wmc; MathCad
WMC; Macro file ; WordPerfect for Win
WMC; Text file ; WordMARC
WMF; Windows MetaFile vector graphics;
WMP; Graphics (Windows Magic Icon Palette);
WN; Text ; NeXT WriteNow
WNF; Corel Draw Font File; CorelDraw
WOA; Swap file; Windows 3.x
WOC; Organization; Windows OrgChart
WOW; Music (8 channels); Grave Mod Player
WP; Word Perfect Format; WP
WP5; Document ; WordPerfect 5.x
WPD; Document; WordPerfect 6.0 - PFS:WindowWorks
WPD; Windows printer driver (uninstallable); Windows
WPF; Fax ; WorldPort
WPF; Form; WordPerfect
WPG; WordPerfect Graphics vector graphics; DrawPerfect
WPJ; Watcom C/C++ IDE project; IDE.EXE
WPK; Macros; WordPerfect for Win
WPM; Macros ; WordPerfect
WPS; Text document; MS Works
WQ!; Compressed spreadsheet ; Quattro Pro
WQ1; Spreadsheet ; Quattro Pro
WR1; Spreatsheet; Symphony 1.1 - 1.2 - 2
WRD; Template ; Charisma
WRI; Write editor format; Write - WinWord
WRK; Spreadsheet ; Symphony 1.0
WRP; Archive; Amiga WARP
WRS; Windows Resource eg. printer driver; WordPerfect for Win
WS; APL Worksheet;
WS; Text file ; WordStar 5.0-6.0
WS2; Text file ; WordStar 2000
WSD; Document; WordStar
WSP; Workspace ; Fortran PowerStation
WSQ; Wavelet-packet Scalar Quantization Format;
WSRC; x-wais source;
WST; Text file ; WordStar
WWB; Button bar for document window ; WordPerfect for Win
WWK; Keyboard layout ; WordPerfect for Win
WXP; Document; EXP for Windows

X

X; Archive; X1.EXE
X; AVS X image file; SDSC Image Tool
X; LEX source code file;
Xnn; Secondary indexes; Borland Paradox
X3D; x3d and xdart Formats;
XBM; X11 Bitmap graphics file;
XCK; Extended crack;
XCK; Extended crack file (usually text);
XCL; Xtree for Windows Script file; Xtree for Win
XDF; OS/2 extended disk format image; XDFCOPY.EXE
XFN; Printer font; Xerox 4045 - Ventura Publisher
XFR; Ventura Publisher Bitmap Editor Font file;
XFT; 24 pin printer font ; ChiWriter
XI; Fastracker 2.0 Instrument File; Fastracker 2.0
XLA; Add-in macro sheet ; MS Excel
XLA; XLib Archive ; xlibpas2.zip
XLB; Excel Toolbar; MS Excel
XLC; Excel Chart; MS Excel
XLD; Excel Dialog; MS Excel
XLK; Excel Archive; MS Excel
XLL; Excel Dynamic Link Library ; MS Excel
XLM; Excel Macro File; MS Excel
XLS; Excel Spreadsheet; MS Excel
XLT; Excel Template; MS Excel
XLT; Translation table ; Lotus 1-2-3 - Symphony - Procomm Plus
XLV; Excel Module; MS Excel
XLW; Excel Workbook; MS Excel
XM; Music format; FastTracker - Cubic Player
XMI; Compressed eXtended MIdi music;
XNF; Standard Network File form;
XOF; RenderMorphics;
XPM; X11 Pixel Map graphics file;
XQT; Executable file ; Waffle
XQT; Macro sheet ; SuperCalc
XRF; Cross-reference file;
XTB; External translation table ; LogoScript
XTP; XTreeGold overlay; XTreeGold
XWD; X Window System window dump image graphics file ; SDSC Image Tool
XWK; Keyboard mapping ; Crosstalk
XWP; Session; Crosstalk
XWP; Text file ; Xerox Writer
XX; Encoded file (ASCII); XXENCODE
XXE; Encoded file (ASCII); XXENCODE
XY; Text file ; XY Write
XY3; Text file ; XYWrite III
XYW; Text file ; XyWrite III

Y

Y; Archive (Amiga); Yabba
Y; YACC grammar file;
Ynn; Secondary index; Borland Paradox
YAL; Data custom/nature.yal; Arts & Letters
YC; Archive; YACC (YAC.EXE)
YUV; Graphics format (YUV);
YZ; Archive; YAC

Z

Z; Archive; WinZipNT - COMPRESS - PACK
Znn; ZIP archive; PKZIP/PKUNZIP
Z3; Infocom game module;
Z80; Snapshot ; ZX Spectrum emulator by g.a.lunter
ZAD; ZFax digitized voice file; ZFax
ZDG; Compressed ZiffNet text document ; Zview
ZER; Data file; ZERBERUS
ZGM; Graphics; Zenographics
ZIP; Archive; PKZIP/PKUNZIP
ZOM; Archive; Amiga ZOOM
ZOO; Archive; ZOO
ZVD; ZyXEL Voicefile ; Z-Fax
ZZE; Encoded file



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