#24 24–pin printer data; LocoScript #IB LocoScript printer data #SC LocoScript printer data #ST LocoScript printer data $$$ Backup or temporary $$S Spreadsheet; OS/2 PMSpread $00 Pipe; also $01, $02... $DB Temporary; dBase IV $VM Microsoft Windows 3.x virtual memory temp $VP Backup of Ventura Publisher VP document --- Backup 000 Compressed volume used by Microsoft Double Space, such as DBLSPACE.000; multiple volumes may have extensions 001, 002... 001 Fax document 075 Font; Ventura Publisher screen font 085 Font; Ventura Publisher screen font 091 Font; Ventura Publisher screen font 096 Font; Ventura Publisher screen font 0B Font; Adobe (Aldus) PageMaker font 1ST Text (README.1ST) 123 Lotus 1–2–3, '97 spreadsheet; see WK1 12A Lotus 1–2–3, '97 add–in 12M Lotus 1–2–3, '97 smart master 15U Font; Adobe (Aldus) PageMaker 232 Microsoft Office Install? 286 Dynamic Link Library; Microsoft Windows standard mode driver; DLL 2BP Microsoft Windows CE gray scale bitmap picture with 2–bits per pixels used for creating applications and help files for Microsoft Windows CE; see BMP, HTP 2GR Microsoft Windows 3.x screen grabber 301 Fax document; Super Fax 2000, Fax–Mail 323 New Media Phone, H.323 Internet Telephony; see III 386 Device driver; Microsoft Windows Virtual Device Driver; VXD 386 Application program; Sun 386I executable; SN3 3D2 Drawing; Stereo CAD–3D 3DM Drawing; 3D meta–file 3DS Picture; 3D–Studio 3DX 3FX Picture; Corel Chart 3GR Device Driver; Microsoft Windows screen grabber for MS–DOS applications 3IN Configuration; MSN setup information; see INI 44 Text document; English read–me 4C$ Data; 4Cast/2 4SW Swap file; 4DOS 4TH FORTH programming language source code 669 Sound; 669 Composer 6CM Sound; 669 Composer 8 Assembly Language source code; A86 assembler; ASM 83C Texas Instruments TI83–Graphlink complex 83D Texas Instruments TI83–Graphlink GDB 83G Texas Instruments TI83–Graphlink group 83L Texas Instruments TI83–Graphlink list 83M Texas Instruments TI83–Graphlink matrix 83N Texas Instruments TI83–Graphlink real 83P Texas Instruments TI83–Graphlink program 83S Texas Instruments TI83–Graphlink string 83T Texas Instruments TI83–Graphlink table setup 83W Texas Instruments TI83–Graphlink window setup 83Y Texas Instruments TI83–Graphlink Y–variables 83Z Texas Instruments TI83–Graphlink zoom 850 Font; Microsoft Visual FoxPro, Codepage 850 852 Font; Microsoft Visual FoxPro, Codepage 852 854 Bitmap Picture; Same as BMP ; saved in 8514 resolution for Microsoft MRBC.EXE; see CGA, EGA, VGA 866 Font; Microsoft Visual FoxPro, Codepage 866 89P Texas Instruments TI-89, 92 Calculator program 8B Adobe Photoshop 2.5 plug–in driver/filter 8BA Plug–in driver/filter for Adobe Photoshop–compatible paint program (such as SNAPPY.8BA in Kai's Power Goo); Dynamic Link Library DLL 8BE Plug–in export filter for Adobe–compatible paint program; adds support for opening and saving new file formats 8BF Plug–in filter for Adobe–compatible paint program; DLL such as Kai's Power Tools; more sophisticated than Filter Factory FFL scripts 8CM Sound; Triton Fast Tracker 8M Font; Adobe (Aldus) PageMaker math font 8SVC Sound; Amiga 8U Font; Adobe (Aldus) PageMaker extended Roman font 906 Picture; Calcomp plotter 94B Sound; Guillomet Maxi Home Studio II sound font; see SEQ A ADA programming language source code A UNIX library A Linker information; Modula 3; used with AX A11 Picture; AIIM A86 Assembly language source code (old 8086 convention); see ASM AA Text; ASCII Art; exported image from The Gimp (http://www.gimp.org) bitmap editor AAF Advanced Authoring Format multimedia; see AVI AAM Picture; Macromedia ShockWave AAS Movie Clip; Autodesk animation setup; used by Compton's Reference Collection AB6 ABStat AB8 ABStat ABC Flow Chart; ABC FlowCharter ABF Font; Adobe binary screen font; BDF ABK Backup; Corel Draw automatic backup ABK HP–95 Appointment book ABS Abscissa Data ABW Text document; AbiWord word processor; ZABW ABX Database; Corel WordPerfect address book AC3 Sound; Dolby AC3 audio usually on DVD ACA Project Manager Workbench ACB Picture; ACMB ACC Microsoft Image Composer.acc ACC DR–DOS ACC Atari ST program ACE Archive ACL Automatic Correction List for Microsoft Office 7.0a or later (\WINDOWS\USER000.ACL — release 7.0 used \WINDOWS\USER) ACL Corel Draw keyboard accelerator ACM Driver; Audio Compression Manager (mapper), TrueSpeech audio decoder ACP Microsoft Office 97 Actor preview; see ACT ACT Microsoft FoxPro action diagram ACT Microsoft Office 97 actor for help system ACT Actor source ACT Picture; Action ACT Adobe Illustrator or Photoshop Custom Color Table ACX Atari ST program AD After Dark screen saver; see ADM, ADR ADA Source code; ADA programming language ADB ADA programming language package body ADC Bitmap Picture; Scan Studio ADD Device Driver; adapter device driver ADD Adobe PageMaker 6.5 Plug-in; DLL, PM6 ADF Configuration; Microsoft Windows administration configuration; INI ADI Picture, AutoCAD; see PLT ADL QEMM ADM Configuration; Microsoft Windows Setup Network Administration ADM After Dark screen saver multi–module; see AD ADN Lotus 1–2–3 for DOS add–in program (between an overlay and a DLL) ADO Adobe Photoshop Duotone options ADP Data; Microsoft Access Project ADR Database; address book ADR After Dark screen saver randomizer; see AD ADS ADA programming language package specification ADT Data; Hewlett–Packard NewWave card file ADT Fax document; AdTech ADX Document; Archetype Designer ADX Database Index; Lotus Approach Database; see OYZ, VEW AEH Text document; Advanced Encapsulated Hypertext AF2 Flow Chart; Micrografx ABC AF3 Flow Chart; Micrografx ABC AF5 Font; Adobe Type Manager font set AFI Bitmap Picture; TrueVision AFL Font; Lotus 1–2–3 Always AFM Adobe Postscript Font metrics; see PFM, PFB AFM Data; Hewlett–Packard NewWave card file AFP Micrografx ABC FlowCharter symbol palette AFS Adobe Type Manager font set AFT Micrografx ABC FlowCharter template AFW Micrografx ABC FlowCharter workspace AG Database; Lotus Agenda 2.0 for MS-DOS AG Amiga Guide AGN Data; PSION Series 3 Agenda; see OPL AI Drawing; Adobe Illustrator vector drawing; if version 9 or later may be PDF format; see EPS, IL9, PMX AIF Sound; audio (MIME: audio/aiff) AIF Setup information; Knowledge Ware AIFC Same as AIF AIFF Same as AIF AIM AOL (America Online) Instant Message; see AOL AIN Archive AIO APL programming language AIP Adobe Illustrator plug–in AIS Bitmap Picture; Xerox intensity samples (Array of Intensity Samples) AIX Data; Hewlett–Packard NewWave card file AKAI Sound; Akai MIDI Digital Sampler AKP Sound; Akai S5000–S6000 AL Sound; Sun; same as ALAW ALAW Sound; Sun ALB Picture; JASC Image Commander ALF Text ALL WordPerfect printer information ALL Lotus 1–2–3 Always; see AND ALL Font; Arts & Letters ALT Data; WordPerfect menu ALX Internet script language defines 2–D layout (ActiveX layout file) AM Sound; AM module AMD Sound; AMUSiC Tracker AMF Sound; Advanced Module Format AMF Amiga metafile AMG Actor AMG Archive AMM Sound; Audio Manager Module AMX Adobe After Effects(R) 5.5 Adobe Motion Exchange AND ANI Microsoft Windows animated cursor ANI Picture; Atari ST ANM Picture; Deluxe Paint Animator; IFF file format ANM Picture information; Animation parameters for ChaosPro fractal generator ANN Microsoft Windows Help annotation ANS Text document; text with layout (ANSI) ANT Sim–Ant AOL America Online; see AIM AOS Nokia 9000 Add–on AP Datalex EntryPoiint AP Archive; Amiga, created by WHAP APD Printer Driver; Adobe (Aldus) PageMaker API Adobe Photoshop ink profile API Dynamic Link Library; Adobe Acrobat 3.0 plug–in APL Source code; APL programming language APLN Dynamic Link Library; Adobe InDesign optional Plug–in; DLL, PLN, RPLN APM Drawing Aldus Placable Metafile APP Database Application; dBase, FoxPro, R:Base application APP Lotus Symphony application APP Atari ST application APP NeXT application APR Lotus Approach database views; see OYZ, VEW APR Document; Employee Appraiser employee review APS Binary version of resource for Microsoft Visual C++ APT Database; Lotus Approach database; compressed, for Internet distribution APX Paradox database information for Lotus Approach APX Borland C++ App–Expert ARC Compressed Archive; Squash or ARC ARF Automatic response file ARJ Compressed Archive ARK Archive; CP/M; ARC or Quark ARC Compressed Archive ARJ Compressed Archive ARR Atari Cubase ART Vector Drawing; Xara Studio ART Picture; First Publisher ART (MIME: image/x–jg) ART Bitmap Picture; Atari ST ART Clipart; Central Point Scrapbook AS Applix Anywhere Office ASA Microsoft Active Server Application ASB Picture; Atari ST ASC Text; ASCII Text ASD Presentation; Astound presentation ASD Microsoft Word for Windows auto–save temporary document ASF StatGraphics ASF Microsoft Active Streaming Format for Microsoft Windows, Internet document; patented, proprietary file format; see AAF, ASX, AVI (MIME: video/x–ms–asf) ASH Assembly language include; Borland TASM; see INC ASI Include; Assembly language header; Borland TASM, uncommon see INC ASM Assembly language source code; see CAS ASO Assembly language source code; Borland TASM, object oriented; see ASM ASP Active Server Page; Internet script; see HTM ASP Terminal program ASP Procomm Plus program script ASP Software Publishing Corp. ASAP WordPower WebShow presentation ASP Text; Association of Shareware Professionals ASR Microsoft Automap street route ASS Assistance for the blind? ASX Active Streaming Format, Internet audio/video document; see ASF (MIME: video/x–ms–asf) AT2 Aldus Persuasion template ATD Microsoft Systems Management Server SMSADDIN.EXE tool registration ATL See WTL ATM Adobe Type Manager ATN Adobe Photoshop filter; see 8B ATT Bitmap Picture; AT&T Group IV fax AU Sound; Sun / NeXT / DEC / Internet Sound SND (MIME: audio/basic) AUX Auxiliary AVA Text document; Avagio publication AVB Microsoft Internet Chat AVI Movie Clip; Video Clip (Audio Video Interleave); Microsoft is replacing AVI with With WMV; see AAF, ASF (MIME: video/avi) AW Help Wizard; Answer Wizard for Microsoft Help files AW Text document; Hewlett–Packard Advance Write AWD Fax document; Microsoft Fax Viewer document (originally from "At Work Fax" Viewer) | picture AWK AWK programming language AWM Video; Animation Works AWP Microsoft Fax key viewer AWS Microsoft fax document; fax signature AWS StatGraphics AWX Fax document AWX Custom AppWizard (Borland Delphi?) AX Linker Information; Modula 3 programming language; used with A AXI Clipart; Axiom Composite File Management System (MetaToolsFile Kai's Power Goo picture library) AXS HTML; ActiveX Script B Lotus Applause batch list B Source code; Bison programming language B&W Bitmap Picture; Atari, Macintosh B1N 1st Reader B30 Ventura Publisher font B64 Archive B8 Bitmap picture; PicLab BA$ Microsoft compressed BAS; decompress with UNPACK.EXE BAK Backup BAL Sound; Ballade music score BAL BAL Borland programming language source BAR dBase menu BAR Archive; UNIX BAS Basic source BAT Batch program; contains DOS commands as plain–text that are interpreted by the operating system, may perform anything, so check contents before running; see CMD BAU Data; Sun StarOffice (OpenOffice) auto-text BB Database; Papyrus database backup BBL Bibliography; Tex BBM Bitmap Picture; Deluxe Paint brush BBS Text; stored on a Bulletin Board System BCF Batch program; see BAT BCH dBase batch program BCH Database; Datalex EntryPoint BCM Backup; Microsoft Works backup of WCM BCO Bitstream Fontware BCP MAK file; Borland (Inprise) BDF Data; Egret BDF Bitmap Glyph (Font); Adobe Bitmap Distribution Format; screen font; ABF BDR Picture; Microsoft Office 97 or Publisher document border BEZ Font; Bitstream vector font BF2 Font; Bradford BFC Microsoft Office Briefcase BFM Font; UNIX BFX Picture; BitFax fax document BGA Bitmap Picture; OS/2 BGI Driver; Borland DOS 16–bit graphics video device driver BH Text; Balloon Help script for programming languages BHX Archive BI$ Microsoft compressed BI; decompress with UNPACK.EXE BI Basic Include BIB Text; Bibliography BIF Bitmap Picture; black and white Binary Image Format BIN Binary Data BIN Micrografx Designer 7 Project image BIO OS/2 BIOS BIT Bitmap Picture; X11 BIT Lotus Manuscript BK Fax document; JetFax Fax Book BK Text document; Adobe FrameMaker BookFile BK1 Backup; WordPerfect; also BK2, BK3... BK! Backup; WordPerfect BKP Backup BLA Picture; Black color separation; CYA (Cyan), MAG (Magenta), YEL (Yellow) Adobe color separation BLD Microsoft Developer Studio MAK file; replaced by DSW BLD Bitmap; GWBasic or QuickBasic BLOAD image BLL Inprise (Borland) Delphi localization information BM Bitmap Picture; see SCT BM1 Apogee BioMenace; see MS1 BMK Bookmark; Microsoft help viewers BML Bookmark; SyncURL bookmarks BMP Bitmap Picture; Uncompressed Windows bitmap picture in 1, 4, 8, or 24-bit RGB color (MIME: image/bmp) BMP Bitmap Picture; IBM OS/2 BNK AdLib Instrument Bank BOO IBM Book Manager BOO Text document; Adobe FrameMaker master document BOO Archive BOOK Text document; Adobe FrameMaker master document BOOK Script; HTMLDOC by Easy Software Products, defines commands for creating PDF or PS from HTM BPC Drawing; Chart; Business Plan Toolkit BPL Dynamic Link Library; Borland Package Library used by applications compiled with Borland (Inprise) Delphi and Borland C++Builder; DLL BPR Project workspace; Borland Delphi and C++Builder information about how to compile and maintain a programming project; see DSW, MAK, MDP BPS Business Plan Toolkit BOT Document; Linkbot BPT Bitmap Picture; Corel Draw bitmap picture fill BR Bridge script BRK Fax document; Brooktrout Fax BS1 Apogee; see BM1 BSA Archive BSC Browser database Microsoft C++, Fortran BSC Archive; Apple ][ BSDL Boundary Scan Description Language BST Text document; BibTex style BTM 4–DOS batch–to–memory BTR Data; Btrieve BPU Backup; BAK BUT Picture; Buttons! BWB Baler compiled spreadsheet application BX Linker information; Modula 3 BYU Picture; BYU animation B_W Picture; Atari, Macintosh C C programming language source code; see M C++ C++ source code; C__ is C++ in Win32 C-- C source code C00 Ventura Publisher printer C3D Micrografx C86 C source code; Computer Innovation C86 CAB Cabinet; Windows Cabinet Compressed Archive CAC Microsoft Infoview; see CSC CAD Picture; Drafix Windows CAD CAL Microsoft Schedule Plus 1.0; see SCD CAL Bitmap picture, vector picture; CALS Raster Group 4 fax compressed bitmap picture CAL Microsoft Windows 3.x Calendar CAL Spreadsheet; SuperCalc CAM Bitmap picture; Casio camera CAN Fax document; Navigator Fax CAP Text; Ventura Publisher caption CAP Capture CAS Casio Calculator, Communicating Applications Specification CAS Borland combined C/Assembly source code; see ASM CAT dBase IV catalog CBC Spreadsheet; CubiCalc CBL Cobol source code; alternate to COB CBM Bitmap Picture; XLib CBT Microsoft Computer Based Training CBT Borland Computer Based Training CC C++ source code CCA Data; Click 'n Create CCC Microsoft Internet Chat conversation; see CCR CCC Bitmap Picture; Curtain Call CCF Lotus Symphony communications configuration; INI CCH Picture; Corel Chart CCITTPicture; UNIX CCO Bitmap; XBTX–BTX CCR Microsoft Internet Chat Conversation shortcut; see CCC CDA CD audio track CDB Data; CardScan CDB Clipboard data CDF Microsoft Internet Explorer (MSHTML) channel definition; contains XML codes (MIME: application/x–cdf) CDF Document; Comma Delimited Format CDF Cyberspace Description Format CDF Bitmap picture; NETCDF CDK Text document; Atari Calamus CDR Vector Drawing; Corel Draw; same extension used for versions 1–9, while the file format has changed in each release — versions 1–3 are rarely supported CDT Corel Draw template CDX Corel Draw compressed drawing CDX FoxPro compound index (database container) CEG Bitmap picture; Tempra Show, Edsun Continuous Edge Graphics CEL Picture; Autodesk Animator, Lumena CEL Script; CIMFast Event Language; animation script, supported by The Gimp (http://www.gimp.org) CEM Computer Graphics Meta–file; see CGM CER Internet Security Certificate; see CRT, DER (MIME: application/x–x509–ca–cert) CF Configuration; IMAKE.EXE CFF Font; Compact Font Format CFG Configuration; INI CFL Corel Flow, flow chart; see CFT, FLP CFL Microsoft Developer Studio diagram CFM Macromedia Cold Fusion template CFM HTML CFM Corel CORELFM.EXE CFN Font; Atari Calamus CFO Borland Turbo C; see OBJ CFP Fax document; Complete Fax CFT Flow Chart; Corel Flow template; see CFL CGA Bitmap picture; same as BMP; saved in CGA resolution for Microsoft MRBC.EXE. see 854, EGA, VGA CGA Ventura Publisher screen font CGM Bitmap picture; Computer Graphics Meta–file; see CEM CH Source code; Clipper include CH3 Harvard Graphics for DOS 3.0 chart; see SY3 CH4 Presentation; Charisma 4 CHD Ares Font Chameleon font description CHH Source code; C++ header CHI Text document; ChiWriter CHK File recovered by DOS' CHKDSK or Windows' ScanDisk program CHM Microsoft compiled HTML Help file; see CHQ, CHW, HHC, HHK CHM Ares Font Chameleon source font; font outline CHN Data; Ethnograph CHO Ares Font Chameleon output font CHP Text document; Ventura Publisher chapter CHQ Microsoft HTML Help full–text search index for CHM CHR Character Translation; Borland character set (DOS Graphics) CHS Corel Presentations chart style CHT Drawing; Harvard Graphics 2.x chart CHT Drawing; dBase chart CHT Drawing; Chartmaster CHW Microsoft HTML Help index; see CHM cicn Bitmap picture; Macintosh OS/X icon; Macintosh ID 3000, 3001; replaces ics CIF CD–ROM disc image; Adaptec Easy CD Creator; ISO CIF Ventura Publisher chapter CIF Picture; Caltech Intermediate Format CIF ICUr Crystallographic Information CIN Microsoft Cinemania (CIN96LM CIN96UPD) CIN96LM See CIN CIN96UPD See CIN CIPO Internet; same as CPI CIS Text; CompuServe Mail CIT Bitmap Picture; Intergraph scanned picture CL Source code; Common Lisp programming language CL Source code; Clever Language" by Multibase, http://www.mbase.com.au CL4 Adaptec Easy CD Creator CLA CLASS Java class CLASSSame as CLA CLC Microsoft Schedule+ 7–Habits mission statement CLM Micrografx Picture Publisher 7 macro CLP Windows Clipboard CLP Clipper script CLR Adobe PhotoStyler color CLR 1st Reader CLS Microsoft Visual Basic 4 class module add–in CLS C++ class definition CLS JavaScript class CLS Actor class library CLW Text; Microsoft Visual C++ class wizard CLX Programming library; Borland Kylix (Delphi and C++ for Linux) Visual Component Library CM Data; Craft Man CMD OS/2 REXX command, more advanced than BAT CMD Batch Program, Microsoft Windows NT/2000/XP enhanced BAT file CMF Sound; Creative Labs CMK Card Shop Plus CMP Bitmap Picture; see JPG CMP Data; Compressed CMT Corel Draw; CDR CMV Corel Draw Animation; Corel Move CMX Corel Presentation Exchange, Corel Metafile Exchange or clipart CNF Microsoft Windows 95 Speed Dial CNF Configuration; Lotus uses 123.CNF CNF Conference link CNT Microsoft Windows Help table of contents; used in pop-up contents window by help viewer when you open HLP file CNV Translation; file format converter (driver, overlay), usually Microsoft Word for Windows; see DLL CO$ Microsoft compressed COM; decompress with UNPACK.EXE COB COBOL programming language source code; see CBL COB Picture; TrueSpace 3D COD Data; StatPac COD Compiled Fortran COD Microsoft Multiplan; see MOD COL Autodesk Animator palette COL Spreadsheet; Microsoft Multiplan COL "COLWIZ" Internet Colour Wizard colour scheme; uncommon COM Compiled MS–DOS executable program; simple program that can contain a limited amount of code and data; see BAT, CMD, EXE COM Common Object Module CON Concordance (WordPerfect document) CON Application information; see INI config Application information; Microsoft Visual Studio; usually based on XML data, used with vcproj COOL Microsoft C## ("Project Cool") programming language source code; see CS CP C++ source code; see CPP CPD Fax cover page (Windows) CPD Script; Complaint Desk CPE Fax cover page (Windows) CPF Fax document; Complete Fax CPH Picture; Corel Print House (simple layout program) CPI Character Translation; Windows or DOS international Codepage CPI Cartesian Products compressed Internet document CPI Bitmap picture; Color Lab CPL Windows Control Panel extension; see DLL CPL Compel presentation CPP Source code; C++ source code CPP Presentation; CA Cricket Presents CPR Corel Presentation CPR Bitmap picture; Knowledge Access CPS Backup of SYS or BAT file by QEMM CPT Bitmap picture; Corel PHOTO–PAINT bitmap CPT CA–Cricket template CPT dBase encrypted memo CPT Compressed Archive; Macintosh Compact Pro CPX Character Translation; character set translation table CPX Corel Presentation exchange; see CPR CPY Source code; COBOL programming language include CPZ Sound; Compoz CR2 Application program; Cray 2 executable; CRY CRD Index card CRE Sound; Crescendo Encrypted Music CRF Programming Language cross–reference; Microsoft Visual C++ CRL Borland (Inprise) Delphi Games Creator Introduction Library; IML, MAP, SDL CRL Certificate Revocation List; P7R CRP Corel Presentation; see CPR CRP Database; dBase IV encrypted database CRT Internet security certificate; see CER, DER (MIME: application/x–x509–ca–cert) CRU Compressed Archive; Crush Compressed Archive CRW Bitmap Picture; Canon RAW bitmap; supported only by Canon software, convert to a standard bitmap file format in the Canon software before using the picture in other applications; RAW CRY Application program; CrayYMP executable, this file extension is usually capitalized as "crY" ; CR2 CS Source code; Microsoft C# (C–Sharp) programming language from Microsoft Visual Studio 7; competitor to Java; see COOL, JAVA CSC Wizard; see CAC CSC Corel Flow wizard script language CSC Corel Script 6.0 script; see WCH CSC Script; Essbase CSG Graph; Statistica CSH Internet program; C-shell CSP Bitmap Picture; PC Emcee, Computer Support Corporation CSP Script; Communication Sequential Processes, using FDR input syntax csproject Source code script; Microsoft C# (C–Sharp); CS CSQ Database; FoxPro query CSS Internet HTML Cascading Style Sheet (MIME: text/css) CSS Statistica Data; Stats+ CSS1 Internet HTML Cascading Style Sheet version 1 CSS2 Internet HTML Cascading Style Sheet version 2 CSV Comma-delimited text; usually exported from a database or spreadsheet, with a single record per line, and a comma separating each field in the record;see TSV CSV Palette; CompuShow CT Bitmap Picture; Scitex CT CTBL Dynamic color table; SHAM CTF Lotus Symphony character translation CTF HP–95 Comm program character translation; see DCF CTM CGMetafile; see CGM CTX Pretty Good Privacy CUR Cursor CUT Bitmap Picture; Dr. Halo CV2 Application program; Convex 2 CV3 Application program; Convex 3 CV4 Microsoft CodeView color configuration CV5 Vector Drawing; Deneba Canvas 5 CVF Compressed Volume; Microsoft Drive Space 3 disk compression CVP Fax document; WinFax cover page CVR Fax document; WinFax Pro cover page CVS Vector drawing; Deneba Canvas CWA See CLC CWK Claris Works CW_ Corel Ventura Publisher work–space CXX C++ Source CYA Cyan color separation. BLA (black), MAG (magenta), YEL (yellow) Adobe color separation C__ C++ Source; C__ is C++ in Win32; see C++ D00 Sound; AdLib D31 Application program; DEC 3100 executable D64 Commodore 64 emulator disk DA$ Microsoft compressed DAT; decompress with UNPACK.EXE DA0 Back–up of Windows Registry; see DAT DAS Database; PackRat index DAT System data file DAT Movie Clip; Video-CD DAT Windows Registry; in the \WINDOWS directory, SYSTEM.DAT and USER.DAT; see DA0 DAT Btrieve database DAX IBM C++; see ICC, ICS DB Database; dBase; dBFast; Paradox table; ThinkTank DB$ Temporary; dBase; Clarion DB2 Database; dBase II DB3 Database; dBase III DBA DataEase DBC FoxPro database container DBD DemoShield player DBD Application debug information; Clarion Modula–2 DBF Database; dBase or Clipper table DBG Application debug information; CodeView or Intel VTune COFF–format debugger information. DBK Backup; dBase DBM Data; DataEase DBO dBase IV program DBQ Paradox database memo DBS Database; Structured Query Language (SQL) DBT Database text memo field; Clipper; dBase; FoxPro DBW Data; DataBoss DBX Bitmap Picture; Databeam (raster) DC Vector Drawing; Delta Cad DCA Text document; IBM DisplayWrite DCA text; Document Content Architecture DCF HP–95 Comm program settings; see CTF DCL Inprise (Borland) Delphi Component Library DCM Bitmap picture; Wright Design; WDD DCP Terminal Program; DynaComm Script DCP IBM OS/2 Data Codepage DCR Borland Delphi Component Resource (binary resource) DCR RIF picture DCR Macromedia ShockWave, Director protected movie; see DXR (MIME: application/x–director) DCS Bitmap picture; Desktop Color Separations; output file format may contain color-separations or multiple alpha- transparency channels, used for pre-press; EPS, TIFF DCS Data; ACT! Activity DCS TIFF–like bitmap; color separation of EPS, often by Quark XPress DCT Dictionary DCU Borland Delphi Compiled Unit; object code DCX Fax viewer document DCX Bitmap picture; same as PCX DD Archive; Macintosh Disk Doubler DDB Bitmap picture DDD Adobe Acrobat Distiller DDF Btrieve database index DDF Script directives for Microsoft MakeCAB; see CAB DDK Family Lawyer data; see QFL DDP OS/2 device driver; DLL DDS Bitmap picture; may be uncompressed or compressed with Adobe Photoshop DXTC Compression plug-in; DXT DEF Module Definition DEM Picture; VistaPro DEM US Geological Survey National Mapping Division DER Internet security certificate; see CRT DEV Device driver; see DLL DFD Picture; Prosa Data Flow DFF DFI Font; Digifont DFL OLE2 DocFile DFM Prosa Data Flow diagram DFM Inprise (Borland) C++ Builder or Inprise (Borland) Delphi form in binary dfnt Font; Apple OS/X datafork font (d.font), may be OpenType in TrueType (TTF) format DFS Sound; Delight Sound DFW Spreadsheet formula; Texas Instruments Derive DFX Drawing; AutoCAD drawing exchange format; text version of DWG used for export to other programs DFX Micrografx Designer effects DG Picture; Autotrol vector graphic DGL Application program; Silicon Graphics Iris using DGL executable; SGI DGM Lotus Freelance diagram DGM Arcland Flow Chart diagram DGN Drawing; MicroStation picture DHE Visual Basic dialog box help editor document DHP Bitmap picture; Dr. Halo; see PIC DHT Data; Gauss DI Sound; Digital Illusion DIA Picture; Computer Support Corporation Diagraph graphics DIB Device Independent bitmap picture; Windows or OS/2 DIC Dictionary DID Adobe Acrobat Distiller DIF Data Interchange Format; DV DIF Wright Design's Design Image Format DIF Spreadsheet; VisiCalc DIP Picture (?) DIR Video; MacroMind Director, Macromedia Director DIR ProComm Plus dialing directory phone number list DIZ Contents; text description of a directory DIZ Description file for bulletin boards DJVU Sound; AT&T DjVu DKB Picture; DKBTrace DL Bitmap picture; animation DLD Data; Lotus 1–2–3 DLG Source code for a dialog box DLG Picture; Digital Line Graph DLL Dynamic Link Library; application extension for Microsoft Windows (MIME: application/x–msdownload) DMD Corel Data Modeling Desktop DMO Duke Nukem, Redneck Rampage saved game DMS Packrat database index DMS Compressed Archive; Amiga Disk Masher DOC Text document; usually Microsoft Word, also WordPad and Wang; if Microsoft, may contain RTF data or another file format, since the DOC file usually changes with new releases of Microsoft Word DOC Text document; Atari 1st Word DOC Text document; PalmPilot DOO Atari DOS MS–DOS (driver, usually) DOS NDIS (network card) driver DOT Document template; Microsoft Word for Windows template; see STY. DOT Corel Draw line description DOX Text document; MultiMate word processor DOX Microsoft ActiveX binary form DP Portable document; Hummingbird Common Ground Digital Paper DP Daily Planner calendar DPG Deleted program group; Windows Applications Manager; see GRP DPI Bitmap picture; Pointline DPK Deleted package, Windows Applications Manager; see GRP DPR Include; Borland Delphi project main file package declarations DPX Video; ANSI/SMPTE 268M–1994 DRAW Picture; Acorn DRS Font; Corel Draw Perfect DRV Device Driver DRW Micrografx Draw or Designer; see DS4, DSF DRW Lotus Freelance DOS DS4 Micrografx Designer 4.0 – 4.1 drawing; see DRW, DSF DSC Microsoft Belief Network (MSBN analyzes and evaluates probability—well, it's an expert system); very rare; see DSF DSD Data; DataShaper DSF Micrografx Designer 6–7 drawing; see DS4, DRW DSF Microsoft Belief Network document containing infix formula declarations (not currently used) DSK Archive for Lotus Smart Suite setup DSK Desktop settings for Inprise (Borland) Delphi, Borland Turbo Pascal, C++ DSM Microsoft Developer Studio macro; written in VBA (Visual Basic for Applications) DSM Sound DSN Object System Designer DSP Microsoft Developer Studio project; replaces MAK DSP Screen Driver; Dr. Halo; see DLL DSS Sound; Digital Soup DST Micrografx Designer Template DST Picture; Tajima embroidery machine proprietary digitized bitmap pattern; BMP, HUS DSW Microsoft Developer Studio Workspace; replaces MDP and BLD DTA Data (generic); PFS DTD SGML declaration (Corel) DTF Data; PC–File; Q&A Write DTM Sound; DigiTrekker module DTP Page Express desktop publishing document; see TPL DTP Publish–It DTP Datastorm Technologies, Inc. ProComm Program patch DTP Timeworks Publisher DT_ Macintosh data fork DUN Microsoft Internet Connection Wizard configuration (names like ICWX25A.DUN) DV Data Interchange Format; same as DIF DVB Data; AutoCAD Project DVI Text document; TeX, LaTeX, OzTeX; device-independent formatted (compiled) TEX document DVI Text document; device independent document DVM Video; movie file DVP DESQview program information DW2 Picture; DesignCad DWARF DWC Archive DWD Sound; Diamond Ware DWF AutoCAD Drawing Web format compressed image created by Autodesk ePlot or eView DWG Drawing; AutoCAD drawing; native drawing binary file format supported by R14, R13, R12/11, R10, R9, R2.6 and R2.5 DWG Drafix CAD DX Text document MultiMate word processor DX Text document; DEC WPS/DX DX Picture; Autotrol document DXB Database; AutoCAD DXF AutoCAD Drawing Interchange File Format DXN Fax document; Fujitsu dexNET DXR Presentation; Macromedia Director movie; presentation (several pictures in a file, like MMM; see DCR, (MIME: application/x–director) DXT Bitmap picture; Adobe Photoshop DXTC Compression plug-in supporting DDS file format, requires Microsoft DirectX driver version 8.1 or later E EEL macro language for Epsilon programmer's editor E3D Instant3D project; see S3D EBD Lotus WordPro border EBF EBJ GeoWorks EBS Database; Medical BioSignals ECF Microsoft Office 97 add–in configuration ECF Micrografx Media Manager ECW Ensoniq sound wave set ED5 Bitmap picture; EDMICS ED6 Bitmap Picture; EDMICS EDE Sound; Ensoniq instrument EDF Drumbeat (Internet application) component; see SDE EDT Portable document; compressed Adobe e-book Reader document can be resized for the output device and has copy protection; PDF EFE Sound; Ensoniq instrument EFS Flow chart; EasyFlow 6.x–8.x EFT Screen font; ChiWriter EFX Fax document; Everex E–Fax EGA Bitmap picture. Same as BMP. Saved in EGA resolution for Microsoft MRBC.EXE; see CGA, VGA, 854 EGA Screen font; Ventura Publisher EL Emacs Lisp (ELISP) programming language source code; GC1 ELC Compiled EL ELT Prosa EMF Drawing; Enhanced Windows Meta–file picture; see WMF EML Text File; Internet E–Mail message; see NWS (MIME: message/rfc822) EMU EMU sound font EMU Emulation ENC MPEG Video; video/mpeg; see MOV | Encore sound (MIME: video/mpeg) ENC UU–encoded; see UUE ENC Sound; Encore END Corel Draw; CDR ENG Picture; EnerGraphics ENT SGML Entities, character mapping; see ERF ENV HP–95 environment; like CNF EOT Font; Embedded Open Type; see TTF EPD Text document; Express Publisher publication EPI Text document; Express Publisher EPS Encapsulated PostScript document; see AI, DCS, EPS, PDF, PMX; Vector Drawing (MIME: application/postscript) EPSF Same as EPS EPSI Same as EPS EQN Equation; Corel WordPerfect for Windows EQU Assembly language equates and declarations; see INC, MAC ERD Prosa ERF SGML "Visual DTD Entity Reference File"; see DTD, ENT ERM Prosa ERR Generic error summary; used by compilers ESI Diskeeper disk defragmenter ESI Vector Drawing; Esri plot ESL FoxPro Macintosh runtime library ESO FoxPro ETF Text document; enriched text format; e–mail message ETH Document; Ethnograph ETX Text document; Setext EVY Corel Envoy document EVY Tumbleweed Software ActiveX control; a portable document format EWD Text document; Express Publisher for Windows EX$ Microsoft compressed EXE; decompress with UNPACK.EXE EXC REXX programming language source code EXC Text? EXE Application program; may also contain embedded data for an installation program or an embedded ZIP file; this common file extension is used by many operating systems in a variety of incompatible file formats; may contain program code to do anything to the computer—do not run a program file if you do not know its purpose or if you did not acquire it from a known, reliable source; (MIME: application/x–msdownload); COM exe.MANIFEST Application data; Microsoft Windows XP data for using the latest versions of Common Controls for user interface and dialog boxes EXM Application program; HP–95, 100, 200 Palmtop PC System Manager compliant program EXP QuickBooks EXP Export Library (Microsoft Visual C++ 32–bit linker); contains information about functions and data exported by a DLL EXT EX_ Compressed EXE (a one–file archive) EYE Renderize project EZF EZ–Fax EZM Script; EZ Macros for Windows, Ceridian Employer Services F Fortran; same as FOR; F90 is the new type F Archive; Freeze F01 Fax document; Perfect–Fax F2R Sound; Farandole F77 Fortran77 source code F90 Fortran90; new Fortran source code F96 Fax document; Frecom FAX–96 FAC Picture; Face Graphics FAE Microsoft Office 97 file converter; Dynamic Link Library DLL FAFF Spreadsheet; Amiga Pro Calc FAM Used with Paradox TV FAQ Text; Frequently Asked Questions FAR Sound; Farandole Composer FAX Fax document; generic; WinFax Pro FBC Data; Apple Macintosh 9.x or OS/X Sherlock Find-by- content file summary, used for searching files FBCIndex Used by Macintosh Find-by-context FCBLock Used by Macintosh Find-by-context FCBSemaphore Used by Macintosh Find-by-context FBK Backup; Navison Financials; see FDB FCF HP–95 Filer configuration FCT FoxPro catalog memo file FD Data; DataFlex FD Include; Fortran include (declarations) FDB Database; FoxPro ? FDB Navison Financials database FDF Portable document; Adobe Acrobat portable document input form, may require registration and serial number for use; see PDF FDL Paradox FDR Starfish SideKick 2 note file FDW F3 Design and Mapping form FDX Force index FF Agfa Compugraphics font description FFA Microsoft Office Fast Find FFF Fax document; Def–Fax FFL Batch program; Adobe Photoshop Filter Factory script adds special effects to bitmap pictures; 8BF FFL Microsoft Office Fast Find FFT Text document; DisplayWrite FFX Microsoft Office fast find index FH3 Drawing; Aldus FreeHand 3 (before Macromedia) FH4 Drawing; Aldus FreeHand 4 FH5 Drawing; Macromedia FreeHand FH7 Drawing; Macromedia FreeHand (is this true?) FI Fortran include FI Bitstream Intellifont FIF Fractal picture (MIME: application/fractals) FIF Font information file FIG Picture FIN Text document FIO ULead AIK uFile plug–in DLL FIT Picture; Flexible Image Transport System (FITS); supported by The Gimp (http://www.gimp.org) FITS Picture; FIT FKY Database program; FoxPro macro FLB Papyrus FLC Autodesk Animator FLC Corel Show FLC Presentation; film clip FLD Charisma Graphics FLD Bitmap Picture; Hijaak Thumbnail Pictures FLF Navision Financials license; see FDB FLG Lotus Freelance presentation; see PRE FLI Presentation; Autodesk animation FLI Flic–movie (Corel) FLI Font Library (Tex) FLL FoxPro runtime Library; Windows; see PLB for DOS FLL Micrografx Designer 7 image fill pattern FLM AutoCAD, AutoShade film roll FLM Picture; Atari ST FLO Flow Chart; RF–Flow 4 FLP Corel Flow FLM Database Program; FoxPro library FLP Flow Chart; Corel Flow project; see CFL FLR Netscape Live 3D — a folder? see RWX FLT Filter (generic) FLT Adobe Illustrator filter FLT Adobe PageMaker file import/export filter; DLL FLT Game; Open–Flight scene FLX Data; DataFlex FM Text document; Adobe FrameMaker FM FileMaker Pro data FM1 Spreadsheet; Lotus 1–2–3 release 2.x FM3 Spreadsheet; Lotus 1–2–3 release 3.x | Harvard Graphics driver FMK Fortran MAK FMO Data; DBase IV compiled format FMS Sound; Fractal Music binary FMT Schedule+ print file FMT Format; Lotus 1–2–3 FMT FoxPro format FMT Style sheet; Borland Sprint FMV Adobe FrameMaker picture, bitmap picture or vector drawing FND Windows Saved Finder results FNK Sound; Funk Tracker FNT Font; raw font created by FONTEDIT.EXE, source file for Windows FON FOB Navision Financials Object; see FDB FOG Font; Macromedia Fontographer font editor intermediate font format FOL 1st Reader FON Bitmap font; Microsoft Windows bitmap font FON Database; Telix Telephone Book FOR Database form; Window–Base FOR Fortran source code FOT TrueType FOT; shortcut to TrueType font for Microsoft Windows <=3.11; see TTF FOX FoxPro+ compiled program FP FoxPro INI FP1 Flying Pigs for Windows FP3 Database; Claris FileMaker Pro 3.0 or later FP5 Database; Claris FileMaker Pro 5.0 or later FPC FoxPro catalog (memo) file; see DBF FPM Database Program; FoxPro startup file FPQ FoxPro database query FPR FPT Sound; Farandole Composer pattern FPT Database Text; FoxPro database memo; see DBF FPW Picture; FloorPlan Plus FPW FoxPro for Windows configuration = CONFIG.FPW; an INI file FPX Bitmap picture; Kodak Flashpix FPX Compiled FoxPro program FRF Font–Monger intermediate font FRK Code Warrior project; see MCP FRL Jet–Forms input form FRM Visual Basic form FRM Database report; Clipper, dBase, dBFast FRM WordPerfect document merge form FRM Data; formula used by FractInt and ChaosPro, UltraFractal FRO Data; dBase IV compiled report FRT FoxPro memo file used with FRX FRX Visual Basic form picture FRX FoxPro report FRT Database text; FoxPro report memo FS Picture FSL Form; Paradox (compiled form?); see RSL FSM Sound; Farandole Composer FST Database program; dBFast FTG Microsoft Windows help file search data FTL Internet; FutureTense texture (Internet texture viewer) FTM WinFax Pro FTM Font; Micrografx FTP FTS Full Text Search of HLP file results database FTS Bitmap picture; Flexible Image Transport Systems FW Framework database FW2 Framework II database FW3 Framework III database FWEB Fortran FXD FaxIt phone book card file FXD Fax document; WinFax Pro FXD FoxPro FoxDoc support FXM Fax document; WinFax Pro FXP FoxPro compiled form FXR Fax document; WinFax FXS WinFax G Chart; Ashton Tate Applause G3 Fax document; Group 3 Fax G4 Bitmap picture; GTX RasterCAD G8 Bitmap picture; PicLab GAL Clipart; Corel Gallery (picture thumbnails) GAL Hewlett–Packard Graphics Gallery GAM Fax document; Gamma–Fax GAM Game information; Klik 'n Play; MTF GBL Visual Basic global definition GC1 LISP source code; EL GC3 LISP source code GCA Vector drawing; IBM MO:DCA – GOCA GCD Bitmap picture GDF Bitmap picture; IBM Graphics data format GED Micrografx Simply 3D geometry; see S3D GED Arts&Letters drawing GED EnerGraphics GED Bitmap picture; Wicat GEM GEM picture; Gem Meta–file (vector drawing) GEN Ventura Publisher GEN dBase application GEO GeoWorks GF Font; TeX GFB Bitmap picture; GifBlast variation of GIF GFI Genigraphics GFM Computer Graphics Meta–file; see CGM GFM CGM picture; Ashton Tate Applause GFT Font; Neo–Paint GHI an INI file for NCSA Mosaic GHK Sound; Ensoniq disk image GIB Chart; Graph in The Box GID Help Guide used with Windows HLP files, opened automatically by the help viewer when you open the help file GID Intel VTune. GIF Bitmap picture; Graphics Interchange File; CompuServe compressed bitmap may contain a single bitmap or an animated series of pictures; patented (the patent expires June 20, 2003) by Unisys (MIME: image/gif); competitor is PNG GIM Genigraphics GIW Presentation picture; Graph in The Box GIX Genigraphics GL Bitmap Picture; GRASP Animation GLB GLM Database; Glim GLO Glossary (generic) GLY Glossary (Microsoft Word for DOS) GMC Sound; Game Music Creator GMF CGM Graphics metafile; WMF GML Picture; Portable graph file format GMS Script; Corel Global Macro Storage GNA Genigraphics GO CompuServe (MIME: application/x–gocserve) GOB Programming library? GOH Geoworks header GOO Picture; Kai's Power Goo morphing program—still or multiple–frames; see AXI GP Geoworks Glue GP4 Group 4 CALS Picture, ITU Group IV GPL Map picture; DeLorme Map–n–Go street atlas GR3 Device driver; Windows 3.0 screen grabber GRA Microsoft Graph chart GRA Sigma Plot GRF Graph GRF Vector drawing; Micrografx drawing (old) GRF Vector drawing; Micrografx Charisma GRF Vector drawing; Graph Plus GRP Windows Program Group; shortcuts to programs created by Applications Manager; also PAC, DPK, DPG GRP Bitmap picture; PixBase Picture Group GS1 Presentation; Graph–Show GSD Vector Drawing; Professional Draw GSW GraphShow GTP Atari ST GUP PopMail GWX Genigraphics GWZ Genigraphics GX1 Bitmap picture; Show Partner GX2 Bitmap picture; Show partner GZ Compressed Archive; GNU Zip; GZIP archive; see TGZ (MIME: application/x–gzip) H C programming language header H++ C++ Header; "H++" extension not allowed in 16–bit DOS; see H__ H-- C Header HA Archive HAP Archive HAV Video Clip; Fast Movie Processor loss-less compressed format by Robert Tibljas of Croatia http://www.bigfoot/~rapidi HBF Font; Hanzi bitmap font 1.1 HBK Mathcad handbook HCX Chart; Harvard Chart XL HDF Hierarchical Data Format for NCSA HDR Database; Egret; PC–File HDR Text; description of an EXE, using output from EXEHDR.EXE redirected to a file for Intel VTune. HDW Vector Drawing; Harvard Draw for Windows; SDSC Image Tools HED Text document; High–Edit HEX Program image with all references resolved, for EEPROM programming HGL Hewlett–Packard Graphics Language; see PLT HH C++ Header; see H++ HHC Microsoft HTML Help contents; see HHK, CHM HHH Power C pre–compiled header HHK Microsoft HTML Help index; see HHC, CHM HHP ProComm Plus Host Mode Help HIN HyperChem HL$ Microsoft compressed HLP (DOS help file); decompress with UNPACK.EXE HLP Help file; May be DOS, or 16– or 32–bit Windows HLX Helix, Nuts&Bolts utility HM Windows Help context IDs used by MAKEHM.EXE HM2 Text document; "Help and Manual" help authoring application RTF master document used to create Windows HLP or CHM help file HMK List of HPJ files used by the Microsoft Windows help compiler to create multiple help files at one time HOF Hall Of Fame HOT Mosaic Internet address HP Picture; Hewlett–Packard Graphics Language (plotter) HP C++ Header; same as HPP HP8 Text; NewWave Write HPG Picture; Hewlett–Packard Graphics Language (HPGL) HPI Font Information; GEM HPJ Help project description for Microsoft Windows help compiler; see HMK HPM Text; Hewlett–Packard NewWave HPP C++ Header HPS Hewlett–Packard PrintSmart document collection settings used with HTML documents; see HPY, INI HPW CompuServe Home Page Wizard (16–bit) HQX Compressed Archive; Macintosh (use BinHex 4.0 to decompress) (MIME: application/mac–binhex40) HPY Hewlett–Packard Web PrintSmart style sheet used with HPS HRF Bitmap picture; Hitachi HRT Sound; Hornet Packer HRZ Picture; Slow-Scan Television HS2 Bitmap picture; Postering monochrome picture HSI Bitmap picture; Image Alchemy; see JPG HSM Include; Assembly language header (University of Waterloo engineering convention); see INC HST History (uncommon?) HT Windows Hyper–Terminal HTX Text document; hypertext HT3 HTML; Internet document, version 3 (uncommon) HT Hyper Terminal HTC Help file contents for Microsoft Windows CE; see 2BP, HLP, HTP HTF Text document; Hyper–G text format HTM HTML Internet document; see SHT, XML (MIME: text/html) HTML Same as HTM HTP Help Topic file for Microsoft Windows CE; see HLP, HTC HTR HTML–like script HTT Microsoft Internet Explorer hyper–text template (MIME: text/webviewhtml) HTX Microsoft FrontPage database results, HTML–like query script; see IDC HTZ Same as HTM; used by Microsoft HUS Picture; Viking Husqvana embroidery machine digitized bitmap pattern; BMP, DST HWD Presentation; Hollywood HXX C++ Header HYP Archive; Hyper HYP Adobe Illustrator hyphenation dictionary HYZ Corel WordPerfect hyphenation HZ Document; ASCII and Chinese text H__ C++ Header; same as H++ in 16–bit DOS; see H++ i Preprocessed C/C++ compiler code for Intel VTune; use Microsoft C++ compiler switch /E to create the listing; see ii I3 Source code; Modula 3 interface code; see M3 IAF Text document; Interleaf Publisher IAM Drawing; Autodesk Inventor Assembly; IPT, IDW IAX Bitmap picture; IBM Image Access Executive ICAtari ST ICA Bitmap picture; IBM IOCA bitmap picture ICB Bitmap picture; Targa ICC ICC Profile; International Color Consortium profile for printers, printers, scanners, based on Apple ColorSync 2.0; see ICM, PF ICC IBM C++ Incremental C++ Configuration for a programming project; see ICS ICE Sound; CoolTalk—Internet communications ICF Cheyenne AntiVirus ICL Icon library (multiple icons of different resolutions) icl8 Bitmap picture; Apple Macintosh OS/7-9 icon; replaced by cicn ICM ICC Profile; Image Color Matching profile (like ICC); see PF ICN Micrografx ICN# Bitmap picture; Apple Macintosh OS/7-9 icon; replaced by cicn ICN Icon; SunOS ICO Icon; Windows icon ICS IBM C++ Code Store project information, used like MAK; see ICC ics* Bitmap picture; Macintosh OS/7-9 icon; Macintosh ID - 4033, -4034; replaced by cicn ICW Microsoft Internet Explorer Internet Connect Wizard ID Microsoft Data Map (common?); also MAP, DAT ID Lotus Notes user identification IDB MDPX file for Microsoft Developer Network IDB Inprise (Borland) Delphi Pascal object file; see DCR, DCU IDC SQL script used with HTX files IDD Sound; MIDI instrument definition IDE Inprise (Borland) C++ IDF MIDI Instrument Definition IDL Interface Definition Language (Microsoft Visual C++ / Microsoft Visual Studio) IDW Vector Drawing; IntelliDraw IDW Drawing; Autodesk Inventor drawing; IPT, IAM IDX Microsoft Outlook Express index IDX Corel QuickFinder information IDX FoxPro index IEEE-695 PostScript document; Hewlett–Packard IEEE 695 information IEF Picture; image IFD JetForm Design IFF Sound; Amiga .8SVX sound IFF Bitmap picture; Amiga ILBM IFP Knowledge Man IFS IBM OS/2 System IG Generic interface source code; Modula 3, used with MG IGES Initial Graphics Exchange Specification IGF Bitmap picture; Hijack graphics bitmap IGF Inset Systems vector drawing IGF Image Systems IGF Sound IGS AutoCAD; IGES file from AutoCAD drawing IHX Binary; ROM/EPROM for Zilog processors; see ZLG ii Preprocessed C++ compiler code; see I III Intel I–Phone compatible, Internet Telephony; see 323 (MIME: application/x–iphone) IL Bitmap picture; hDC computer icon library IL Borland C++, Borland Delphi and Borland C++Builder incremental linker may have extensions IL1, IL2, IL3, IL4 for the state of the link process IL9 Drawing; Adobe Illustrator vector drawing; For version 9 or later, based on PDF format instead of original AI format; see EPS, PMX ILBM Bitmap Picture; interleaved bitmap picture ILK Incremental linker information; Microsoft Visual C++ 32–bit versions ILV Presentation; ILOG Hypertext viewer IM8 Bitmap picture; Sun IMA Vector Drawing; Zenographics image IMG Bitmap picture; GEM Picture; Atari; GEM bitmap IMG Macintosh disk image, copy of data exactly as it appears on a disk (usually CD-ROM) IML Picture; Inprise (Borland) Delphi Games Creator Image Library; CRL, MAP, SDL IMP Spreadsheet; Lotus Improv IMQ Presentation; Image–Q IN_ Microsoft setup information (not compressed–text) INC Include; Assembly language header; see EQU, HSM IND Windows 98 application access and usage log, used for disk maintenance; see LGn IND Index indd Text document; Adobe InDesign page-layout application indigo Bitmap picture; Indigo Graphics INF Setup Information; If "AUTORUN.INF", an auto–start CD–ROM INF Adobe Type Manager font information info Amiga INI Configuration settings INK Bitmap picture; Cross Pad XP handheld digital notepad INK Pantone color information; Corel Draw INL C++ inline code (like H, but can include code) INL Inline Function Definitions (Microsoft Visual C++) INS Configuration; Internet Communications settings; see ISP (MIME: application/x–internet–signup) INS Sound; AdLib music INS Sound; Ensoniq Instrument INT Borland Delphi Pascal; Delphi interface (include file) INT Code page and collation sequence (FoxPro) INX Database; FoxBase index IO Archive; CPIO IO Modula 3; see IX IOC Chart; Instant ORGcharting IP Profile IPF Text; Information Presentation Facility markup IPL Color palette; Corel Draw; Pantone IPT Drawing; Autodesk Inventor Template; IAM, IDW IQY Microsoft Office 97 Internet Query ISO ISFF Picture; Intergraph Standard File Format ISH Archive ISO CD–ROM disc image; Adaptec Easy CD Creator; CIF ISP Configuration; Internet Communications Settings; see INS, ICW (MIME: application/x–internet–signup) ISS InstallShield Silent ISU Un–install Script for InstallShield and Windows 95 UNINST.EXE IT Sound; Official Impulse Tracker; see MOD, MID ITS Internet Explorer document set; see HTM IVF Video (MIME: video/x–ivf) IVI MSDN (Microsoft Developer's Network) InfoViewer 5.0 topic IVQ MSDN InfoViewer 5.0 index for full–text searches IVT MSDN InfoViewer 5.0 Information title IVU Picture; IVUE Live Picture drawing IWA Text document; IBM Writing Assistant IWP Text document; Wang document; see DOC IWZ Install Shield template for creating software setup wizards IX Linker information; Modula 3, used with IO file JAR Compressed Archive; contains all files used in a Java applet JAS Picture JAV Internet program; Sun JAVA source code; see CS JAV Internet program; Microsoft Visual J++ JAVA Same as JAV JBD Database; Sigma Scan JBF Bitmap picture; PaintShop Pro browser JBX Project Scheduler 4 JCK Liquid Motion JACK scene description JET Fax document; Hybrid Jet–Fax JFF JPEG picture JFI JPEG picture; JFIF picture; see JPG (MIME: image/pjpeg) JFIF Same as JFI JIF Bitmap picture; not the same as GIF JMS JOD Database; Microsoft Jet OLE database JOR Structured Query Language (SQL) journal JP2 JPEG picture; Called JPEG2000, this file format was introduced in 2002 to offer good Wavelet (almost loss- less) compression ratios, but with better image quality than JPG JPC Bitmap picture; Japanese PIC JPE JPEG picture; same as JPG JPEG Same as JPG JPG JPEG picture; Joint Photographic Experts Group compressed bitmap picture format, introduced in the early 1990s; offers lossy-compression, which means some image details are lost as a tradeoff for improved compression; for compatibility, files use RGB (red-green-blue) color model instead of CMYK (cyan-magenta-yellow-black) (MIME: image/jpeg) JS Internet program; Java script; see MOCHA, PL (MIME: application/x–javascript) JSE Internet program; Encrypted JS JT Fax document; JT Fax JTF Bitmap picture; see TIF, JPG JTF Fax document; Hayes JT Fax JW Text document; Just Write word processor JWL Just–Write JZZ Spreadsheet; Lotus Jazz KB Knowledge Pro source code KBD Character Translation; keyboard layout KBD ProComm Plus keyboard KCL LISP source code; Kyoto Common Lisp KDC Bitmap Picture; Kodak digital camera KDF Document; Kinko's Print Shop print-to-file master file format created with "KFP Tool" for file to be printed by Kinko's; apparently based on PDF KDO Kudo Picture browser KEX KEDIT macro file (REXX subset) KEY Database; Forecast Pro key Presentation; Apple Macintosh Keynote graphic presentation based on XML language KEY Keyboard macro KFX Fax document; Kofax Group 4 KLD KEDIT language definition KML KEDIT macro library KPP Kudo place pack, place module KPS Bitmap picture; IBM KSM Sound; Kefrens–Sound Machine KWD Keyword KWF Borland Delphi Pascal; chart KYE Kye program data L LEX source code L LISP source code; (uncommon?) LA Sound; Live Audio Internet Plug-In; LMA LAB Q+E mailing label LAM Sound; Live Audio Streaming Audio LAN Microsoft Mouse 11 configuration; INI LAT LATEX (MIME: application/x–latex) LATEXSame as LAT LAY Lotus Applause LBG dBase mailing label LBL Label; Label Magic LBL FoxBASE+ label definition LBM Bitmap picture; Deluxe Paint; Amiga; see IFF LBO Database; dBase IV label LBT Database text; FoxPro label memo LBX Database text; FoxPro label LCF HP–95 Comm log–on configuration script LCK File lock (for Database) LCN Dictionary; WordPerfect LCS Database; ACT! LCW Spreadsheet; Lucid 3D LD Telix Long Distance LDB Microsoft Access record–locking information (Used with MDB files) LDIF LDAP Directory Interchange Format LDL Paradox LEG Text document; Legacy word processor LEX Spelling checker dictionary LEX HP–Basic Language Extension LFD Lucas Arts Data LFT Font; ChiWriter LGn Text; used by Windows 98 for disk maintenance; see IND LGC Audio LGC Corel Layout Designer logic file for SGML; see LNM, LSI LGO Microsoft Windows logo driver (Bitmap Picture) LGO Bitmap Picture; Super–Fax header or footer LHA Compressed Archive; LHARC LHW Compressed Archive; Amiga LHWARP LI$ Microsoft compressed LIB; decompress with UNPACK.EXE LIB Library; Static link library LIC License (vendors like Microsoft Visual C++) LIF Data; Hewlett–Packard Logical Interchange Format LIF Archive LIN AutoCAD lines LIM Database; Wextech Answer Works search index for Microsoft Windows help files; HLP LIS Compiler listing file lisp Lisp script language source code; LSP LIT Document; compressed text and illustrations used by Microsoft Reader, as an Online Smart Book; competitor to PDF LIV Internet Drawing; Adobe Live Motion LIQ Sound; Liquid Tracker LMA Sound; LiveAudio Internet Packetized Audio Plug-In; LA LNG Adobe Acrobat language plug–in vdkhome LNK Windows program link LNK Linker response file LNM Corel WordPerfect SGML alias file; see LGC, LSI LOC IBM C++; see ICC, ICS LOG generic LOG Microsoft HTML Help log LPK (rare) License package LPR LRF Microsoft C++ Link response list LRG Bitmap picture; Macromedia XRes multi–resolution LSI Audio LSI Corel Layout Specification Instance, part of SGML; see LNM, LGC LSL Paradox; see FSL LSO Compiled LotusScript; see LSS LSP Lisp script language source code LSP AutoCAD LISP macro language LSS Lotus WordPro; LotusScript macro programming language LST Listing; program listing LST Microsoft PowerPoint; see PPT LST 1st Reader keyboard macro LTM Lotus Forms LWB Picture; Light wave 3D Object LWD Text document; LotusWorks LWF Compressed Archive; compressed bitmap picture using loss- less or lossy (JPG) compression to choose between accurate detail and small size; often used with Adobe Photoshop PSD files; may also contain scanned documents using a variety of compression methods on different parts of a page LWP Text document; Lotus WordPro LXO LaserMaster font LYR Lyrics for Audio CD (Microsoft applet) LZA Picture; LZA animation LZH Compressed Archive; LHA, LHARC LZS Compressed Archive; LARC LZS Skyroads LZW Compressed Archive; Amiga LHWARP and others M Mathematica M MatLab m Objective-C source code; C M11 Text document; MASS11 M1V MPEG Movie; MPEG-1 video; video/mpeg; see MOV (MIME: video/mpeg) M2V MPEG 2 Movie; MPEG-2 video; see MPG M3 Modula 3 programming language source code; see I3 M3D Picture; Corel Motion 3D M4 UNIX preprocessor MA3 Harvard Graphics MAC Bitmap picture; Apple Macintosh MacPaint MAC Microsoft Access database shortcut MAC Inprise (Borland) TASM macro; see INC, EQU MAD Microsoft Access database module MAF Microsoft Access database form shortcut MAG Bitmap picture; MPS Magro Paint MAG Magenta color separation; BLA (black) CYA (cyan), YEL (yellow) Adobe color separation MAI Microsoft Mail message MAK Make; program compiler make file; see DSW MAM Database program; Microsoft Access database macro MAN (MIME: application/x–troff–man) MAN Text (manual) MAP Geography map MAP MAPI Mail MAP Programming linker segment map MAP Game level for Duke3D, Doom MAP Inprise (Borland) Delphi Games Creator map library; CRL, IML, SDL MAQ Database query; Microsoft Access database query MAR Source code; VAX Assembly language; see ASM MAR Microsoft Access report shortcut MAS Lotus Freelance Graphics Smart Master look; see SMC MAT Microsoft Access database table shortcut MAT MatLab MAX Visioneer PaperPort scanned document, compressed picture MAYA Bitmap Picture MAZ Windows' Hover maze MB Database text; Paradox memo | Inprise (Borland) database MB1 Apogee Monster Bash MBF Corel Visual DTD Document Type Definition for SGML MBG Microsoft Mail mailbag MBK Backup; dBase IV database index MBK Atari ST, One STOS Memory Bank MBOX UNIX Mailbox MBS Micrografx Picture Publisher brush shape MBS Atari ST STOS Memory Banks; see MBK MBV Corel.visualDTD.7 MBX Document; Outlook Express Mailbox MBX Database index; dBase index MC Localized message table resource (Windows) MCC Microsoft Network shortcut MCC Dialer 10 Calling Card MCC MathCad configuration; see INI MCD MathCad MCF Font; MathCad MCI Driver; Media Control Interface MCP Metroworks Code Warrior Project; FRK MCS Math CAD MCW Text document; Microsoft Word for Macintosh | Apple Macintosh MacWrite MD Archive; MDCD MD Picture; MacDraw MDA Microsoft Access database add–in MDB Microsoft Access database application MDB Microsoft file Viewer MDE Database; Microsoft Access MDF Menu definition file MDL 3D Design Plus MDL Spreadsheet; CA–Compete MDL Sound DigiTrakker MDM Configuration; Telix modem description MDN Microsoft Access blank database template MDP Project workspace; Microsoft Visual C++ MAK files and Microsoft Visual J++ information about how to compile and maintain a programming project ; see BPR, DSW, MAK MDR Database; Medical Drug Reference; see SRL MDT Microsoft Access add–in data MDW Microsoft Access Workgroup information MDX dBase index MDX Microsoft Database index MDX Inprise (Borland) database index MDZ Microsoft Access Wizard template ME Text (READ.ME) MED Sound; Amiga; Med/OctaMed MEM MEN Picture; TIF MET Drawing; OS/2 PM Meta file; WMF MET OmniPage Pro MEX MatLab MF Adobe FrameMaker MakerFile MF Font; MetaFont MFJ MetaFont batch file MG Generic Module source code; Modula 3, used with MG MGF Font; Micrografx MGF Materials and Geometry 3D rendering MGX Micrografx clipart picture MHK Archive; Mohawk archive for the game Riven MHT Internet Document; Microsoft HTML Message document saved Web page including all elements from the original document, including pictures (MIME: message/rfc822) MHTMLSame as MHT MIC Bitmap picture; Microsoft Image Composer native file format; can edit with Microsoft PhotoDraw; see MIX MID Sound; MIDI sequence; see MOD (MIME: audio/mid) MID Eudora script MIDI Same as MID MII Database; MicroStat–II MIF FrameMaker Interchange Format MIF Midi Instrument File MIF Watcom make script for C/C++ and Fortran MIFF Bitmap picture; ImageMagick; Magick Image File Format MII Data; MicroStat–II MIM Mime encoded; see MME MIX Drawing; Microsoft PhotoDraw vector illustration (Microsoft Image eXtensions) may also contain embedded bitmap pictures; does not support textures or gradient fills; version 1.0 files are also supported by Microsoft Picture It! and Microsoft Image Composer, export and convert to TIFF for use by other programs MIX Sound; Dance/RaveEjay MIX Object file; Power C; OBJ MKI Picture; MediaKnife (another Internet animation picture) MKI Picture; MagView; Japanese MAKIchan MKS ML3 Project; Milestones 3 MLB FoxPro for Macintosh library MLB Lotus Symphony macro MLP Bitmap picture; Mac Link Plus Capture MM Text document; MultiMate Advantage word processor MME Mime encoded; see MIM MMF Microsoft Mail Message (like an INI or the Registry) MMH Microsoft Media Manager Helper DLL (uncommon type) MML FrameMaker MMM Font; Adobe Type Manager multiple–master metrics; see PFB, PSS MMM Movie clip; RIFF Multimedia movie (Animation) MMO Text document; Ashton Tate RapidFile memo MMP Movie clip; Multimedia Player MMP Microsoft Music Producer MMW Multimedia World magazine MNF Saved MSN search MNG Picture; Multiple Network Graphics; animated, multiple–frame PNG image MNG Geography Map; DeLorme Map–N–Go MNG Bitmap picture; Animation Shop MNT FoxPro menu memo MNU AutoCAD menu MNU FoxPro menu MNU Lotus WordPro menu MNX AutoCAD compiled menu MNX FoxPro menu definition MNY Data; Microsoft Money account MO Linker information; Modula 3; see MX MOC Internet program; MOCHA Java script; see JS MOCHASame as MOC MOD Modula–2 programming language source code MOD Module MOD Digital music sound clip; see MID, IT, XM MOD Eudora script MOD Spreadsheet; Microsoft Multiplan MOD Windows link Library DLL (rare) MOO Movie clip; Apple QuickTime; same as MOV MOOV Same as MOV MOR3 Text document; Symantec MORE 3.0 for Macintosh outline MOV Movie clip; MOV/MOVIE Apple QuickTime (MIME: video/quicktime); see AVI, WMV MOV AutoCAD AutoFlix MOVIESame as MOV (MIME: video/x–sgi–movie) MP Spreadsheet; Microsoft Multiplan MP2 MPEG Audio; MPEG-1 audio layer-2; Xing (MIME: video/mpeg) MP3 MPEG Audio; sound; highly–compressed audio without copy–protection, also called "MPEG 1 Audio Layer 3"; MPEG–2, MPG; competitor to WMA, NAP, OGG MP3PRO MPEG Audio; higher compression than MP3; compatible with many MP3 players MPA MPEG movie (MIME: video/mpeg) MPC Microsoft Project for Windows calendar MPD Device driver; Windows mini–port driver MPD Database; Microsoft Project for Windows MPE MPEG movie; MPEG, MPEGV (MIME: video/mpeg) MPG MPEG movie; Apple QuickTime or MPEG movie (MIME: video/mpeg); see VOB MPO Microsoft Org Chart, organizational chart; see OPX MPM MPEG Movie MPM WordPerfect Math Plan macro MPP Presentation; Microsoft Project for Windows document MPR Lotus Approach Smart Master database application MPR Microsoft FoxPro menu program MPT Bitmap picture; see TIF MPT Microsoft Project template MPV Movie Clip; MPEG MPV Microsoft Project view MPW Microsoft Project for Windows workspace MPX FoxPro compiled menu MPX Microsoft Project for Windows exchange MP~ MRB Multiple resolution bitmap picture; contains several BMP at different resolutions created by Microsoft MRBC.EXE for help files MRF Macintosh font; font (vector drawing?) MRK Picture; Informative Graphics Markup MSA Atari ST disk image; Magic Shadow archive MSF Lotus Notes MSG Document; Microsoft Outlook/Exchange mail document MSG FoxDoc message (FoxPro) MSG Text document MSK Autodesk Animator mask format MSN Microsoft Network home base (document?); MSN Central MSO Internet document; Microsoft Office 2000 document exported as HTML MSP Bitmap picture; Microsoft Paint MSP Binary Data; Microsoft Patch for updating applications MSS Text document; manuscript; files created by programs based on Windows SDK Scribble sample application MST Corel Presentation master (presentation document) MST Microsoft Test script MST Prosa MSW Text document; Microsoft Word; see DOC MSX CP/M archive MTF Klik 'n Play game; GAM MTH Data; Derive MTM Sound; MultiTracker module MTR Sound; MultiTracker module master MTV Video clip; see MPG MTW Database; MiniTab MU Menu; Inprise (Borland) | Corel Quatro Pro MUR Picture; Atari ST MUS Sound; Music Time, Doom, Heretic MUZ MIDI (used by Windows' Hover game) MVA Archive; used by MS, some setup programs MVB Microsoft Media Viewer document; display with MVIEWER.EXE or MVIEWER2.EXE. MVF AutoCAD AutoFlix MVI AutoCAD AutoFlix MVW Saber LAN log MW Text document; Apple Macintosh MacWrite MWP Lotus WordPro document smart master MX Linker information; Modula 3; see MO MXE Corel Quatro Pro startup macro (executed when a Spreadsheet is opened) MXT Microsoft Programmer's WorkBench add–in MYP Presentation; Make–Your–Point NA2 Database; Netscape Communicator address book NAB Database; Netscape Communicator address book NAP Picture; NAPLPS, EnerGraphics NAP Sound; Napster (an Internet-based file sharing company) copy-protected MP3-like audio file, created by Play Media Corporation (WinAMP) NAV MSN application extension; see NED NAV Eudora script NB Notebook (Corel WordPerfect?) NB Text document; Nota Bene NBA HyperStudio multimedia utility program (16–bit DLL) NC Bitmap Picture; NetCDF NC Instructions for Numerical Control; Computer–Aided Manufacturing System (CAMS) NCB Microsoft C++ Program Database NCD Norton Change Directory (disk directory information) NCF Configuration; NetWare configuration (STARTUP.NCF) NDB Database; Network database; Compex, Intellicom NDX Database index; dBase Index | generic name NED MSN application extension; see NAV NEO Bitmap Picture; Atari Neochrome NET Network (Paradox uses NET files) NEW Text document NFF Neutral File Format NFO NG Hypertext Data; Norton Guides NIF Bitmap Picture; Graphics Interchange; NIFF Navy Image File Format NIFF Sound; Notation Interchange File Format NLM NetWare program NLS Character Translation; National Language Services driver (font or font map) NLX Database form; Form Worx NME NOW NP Nokia Planner; Visual Planner NPR Lotus Notes reporter file NSC Netscape conference call NSF Lotus Notes database NST Sound; Noise–Tracker NTF Database; IBM Book Manager NTX Database index; Clipper NTZ InVircible Anti–Virus NWS Internet News Message; see EML; could be text or HTM (MIME: message/rfc822) NXT Sound; NeXT font O Atari or UNIX object file; see OBJ OAZ Fax document; OAZ Fax OB$ Microsoft compressed OBJ; decompress with UNPACK.EXE OBD Microsoft Office Binder OBJ Object; compiled intermediate binary code OBR Object Browser state file (Borland C++) OBT Microsoft Office Binder template OBV ObjectScript OBX OBZ Microsoft Office Binder wizard OCA OLE Custom Control Library information OCF Object Craft OCR Generic OCX OLE Active-X Custom Control (not necessarily 32–bits, not necessarily Basic) ODA Used with OCX ODA Text document; Open Document Architecture Consortium; ODF ODB Document; Microsoft Office 97 Binder; see ODT ODF Text document; Open Document Interchange Format; ODA ODL Object Definition Language (Object Library Source for OLE applications) ODS NCompass Labs (Internet script?) ODT Document; Microsoft Office 97 Binder; see ODB OEM OFD ObjectView Form Definition OFF Drawing; 3D Object OFN Microsoft Office File New (pther office documents) OFT Microsoft Outlook template (boilerplate document) OGG Audio; highly–compressed audio without copy–protection; free, open–source competitor to MP3 OGX Microsoft C++ Component Gallery exported classes and resources OKT Sound; Oktalyzer Module OLB Microsoft project OLE object library OLB AUTOGEN file OLB VAX object library OLD Backup OLE Object Linking and Embedding Object (generic name) OLI Text document; Olivetti OLK Microsoft Outlook Address Book, Microsoft Mail mailbag lock; see MAI OLN Outline (Microsoft Visual C++ outline examples use this extension) OLT Outline (Microsoft Visual C++ outline examples use this extension) OMB OOGL Picture; Web Object Oriented Graphics Library OPC Microsoft Office 97 upgrade wizard clean–up (like a setup script) OPL PSION Organizer; see AGN OPT Borland Delphi Project Options (text, current project settings) OPT Microsoft Developer Studio workspace options OPW Org Plus organizational chart OPX Chart; Banner Blue Org Chart; see MPO OPX Microsoft Office Organization Chart (also by Banner Blue) OR2 Lotus Organizer 2 OR3 Lotus Organizer 97 OR4 Lotus Organizer 4 ORA Oracle Database ORG Lotus Organizer calendar OSS Microsoft Office saved search OTF Font; Open Type font specification supported by Adobe and Microsoft; see TTF, PFB OTH ".OtherFolder", Microsoft Power Toys Explorer tool OTM Microsoft Outlook Sessions Visual Basic for Applications macro OTX Text document; Olivetti Olitext OVL Program overlay OVR Program overlay OYZ Lotus Approach alternate dBASE index; created if ADX file is used by another application OZM Sharp Organizer memo bank OZP Sharp Organizer telephone bank P Pascal source code; see PAS P Lotus Applause P10 Picture; Tektronix Plot 10 (Vector Drawing) P16 Sound; Pro Tracker Studio P65 Text document; Adobe (Aldus) PageMaker 6.5; see PM5, PMD P7C Internet Digital ID, identification validation (MIME: application/pkcs7–mime) P7M Internet Digital ID P7R Certificate Request Response; CRL P7S Internet identification validation PA1 Page–Ahead PAB Microsoft Exchange Personal Address Book PAB Microsoft Word Personal Address Book PAC Windows Applications Manager added or changed package; see GRP PAC Internet Program; Netscape application PAC Sound; SVStudio PAC Sound; Atari Stad PAD Text document; NoteBook for Windows PAK Compressed Archive PAK Archive; Quake Game PAL Color Palette for drawing and Bitmap editor programs PAN PAR Windows 3.x swap file: 386SPART.PAR, SPART.PAR PAR Parameter (generic) PAS Pascal, Borland Turbo Pascal, Inprise (Borland) Delphi PAT Pattern (bitmap picture used by drawing programs) PAT AutoCAD Pattern Definition PAT Sound; Gravis Ultra–sound Patch PB PowerBasic configuration (PBCONFIG.PB) PB Data; WinFax Pro Phone Book; FAXability Plus PB1 Text document; First Publisher PBB Microsoft Mail address information file; see MAI PBD Bitmap Picture; Adobe Photo Deluxe; see PDD PBD Data; Fax–Now Phone Book PBD Power Builder dynamic library PBH PowerBasic Help file PBI Microsoft Profiler PBK MSN Phone Book PBK HP–95 Phone Book PBL Database; Sybase Power Builder PBM Bitmap Picture; IBM Portable Bitmap format PBO Microsoft Profiler PBT Microsoft Profiler PC1 Picture; Atari ST Degas PC2 Picture; Atari ST Degas PC3 Picture; Atari ST Degas PC3 Harvard Graphics DOS 3.0 Custom palette PC8 Text document; IBM Codepage 437 text PC8 Hewlett–Packard NewWave Write PCC Bitmap picture; Zsoft; see PCX PCC Bitmap picture; VideoCraft GIF PCD Bitmap picture; Kodak Photo CD PCF Picture; portable vector and bitmap picture format, data is stored most–significant byte first, while PC–compatible computers use least–significant byte first; SNF, WMF PCF Microsoft Profiler command file PCF HP–95 Printer configuration PCH Pre–compiled Header (Microsoft Visual C++); used by linker when creating a program, to search for functions and data used by the program PCH Patch; usually a small file containing updates to be applied to a larger file by running a program named PATCH.EXE PCH++Same as PCH; for Macintosh PCJ Picture; IBM Linkaway–Live PCL Device Driver; Printer Control Language for printer driver PCM Printer Cartridge Metric for printer driver PCM Bitmap Picture; Son–Arc PCM Sound PCP Symantec Live Update; PC Pro PCS Microsoft Clipart index PCS Bitmap picture; PICS animation PCT Bitmap picture; Macintosh PICT Format Picture PCW Text document; PC Write word processor PCX Bitmap picture; PC Paintbrush PDA Bitmap picture PDB Database; PalmPilot Record PDB Program database, used by 32–bit LINK.EXE for program information PDB Database; Tact PDD Bitmap Picture; Adobe Photo Deluxe; Adobe Acrobat Distiller (Style?); see PBD PDF Portable document; Adobe Acrobat portable document format, containing pre-processed EPS text, illustrations and fonts (MIME: application/pdf); see also Adobe e-book Reader EDT; Microsoft competitor is LIT PDF Corel Ventura Publisher page (EPS–like) file PDF Microsoft Package Definition file; Microsoft Systems Management Server PDF Quark–X–Press Printer Information PDI Microsoft PowerPoint Translator (import/export filter) PDI IBM VideoTex PDR Device Driver; Windows Port Driver (a kind of virtual device driver) PDS NASA Planetary Data System PDW Bitmap Picture; HiJaak; Professional Draw PDX Adobe Acrobat index for PDF document; created by Adobe Catalog PDX Paradox; see INI PDX Adobe (Aldus) PageMaker Printer Description; INI PE Portable Executable program; see STI PF ICC Profile; Windows ICM profile PFA Font; PostScript font Type 3 PFB PostScript Font; Postscript Type 1 outline font; see AFM, MMM PFC WordPerfect Perfect Fit (filter?) PFC Text document; First Choice word processor PFK X–Tree Pro PFL Presentation; Lotus Freelance for DOS 4.0 Portfolio PFM Postscript Font PFM; PostScript Printer Font; ee AFM PFM PCL Printer PFR Font; Bitstream Portable Font Resource, embedded font for Internet documents PFS Document, Data; PFS:File or PFS:Write PFT Font; ChiWriter PFZ Archive; Bitmap picture compressed by VFZ Plug-in for Adobe Photoshop extracted to VFZ for use in Photoshop; PSD PGL Picture; HP7475A Plotter (vector drawing) PGM Bitmap picture; Portable Gray Map; 8–bit black and white PGML Picture; Precision Graphics Markup Language for displaying vector drawing on the Internet; see PS, PDF PGN Game; Portable Game Notation PGP Pretty Good Privacy PH Windows Help file phrase–table, created by the Microsoft Windows help compiler (HC.EXE) PH Script; Perl source code header PHN Database; Ultra Fax phone book PHO Database; Metz Phone PI$ Microsoft compressed PIF; decompress with UNPACK.EXE PI1 Picture; Atari ST Degas PI2 Picture; Atari ST Degas PI3 Picture; Atari ST Degas PIC Lotus picture; Lotus 1–2–3 Graphics PIC Bitmap picture; Pixar or Pictor picture PIC VideoShow NAPLPS PICT Bitmap picture; Apple Macintosh PICT/PICT2; rename to PCT extension for use on Microsoft Windows PIF Program information; shortcut to MS–DOS program PIF Bitmap picture; IBM PIN Microsoft Pushpin Set PIP Bitmap picture; JPEG, JPG, JPE, JFIF, PJPEG compressed bitmap picture PIT Compressed Archive; Macintosh Pack–It PIX Inset Systems vector drawing PIX Image Systems vector drawing PJ Project; Computer Associates SuperProject PJ Hewlett–Packard Paint Jet PJP PJPEG Internet picture; see JPG PJPEGSame as PJP PJT FoxPro Project Memo PJX Project; Microsoft FoxPro PK Font; TeX, Metafont Bitmap Font PKA Compressed Archive; PKArc PKG Microsoft Developer Extension (C++ 4.0) PKG AppleLink PKT PL Internet Program; PERL script PL Prolog source code PL Script; Perl source code PL Font; TeX font metrics PL1 Drawing; 3D Home Architect floor plan PL3 Harvard Graphics DOS 3.0 Chart Palette PL4 Micrografx Designer palette PLB FoxPro runtime API Library for DOS (use FLL for Windows runtime Library) PLG Microsoft HTML form PLL Library; Clipper PLN Dynamic Link Library; Adobe InDesign optional plug–in by third–party developer; DLL, APLN, RPLN PLN Spreadsheet; WordPerfect PLT AutoCAD vector drawing plot PLT Hewlett–Packard plotter print file; see HGL PLT Tektronix plot PLY Presentation; Harvard Spotlight PLY Drawing; Autodesk Animator Polygon Format PM Text document Adobe (Aldus) PageMaker PM Bitmap picture; X11 PM Perl script PM3 Text document; Aldus PageMaker 3 (there is no PM1 or PM2) PM4 Text document; Adobe PageMaker 4 PM5 Text document; Adobe PageMaker 5; see P65 PM6 Text document; Adobe PageMaker 6.52 (is this true?), PageMaker 7.0 PMA Windows NT Performance Monitor Alert PMB Picture; bitmap? PMC Windows NT Performance Monitor chart PMC Bitmap picture; A4Tech Scanner PMD Text document; Adobe PageMaker 7.0; P65 PML Adobe PageMaker 6.5–7.0 Library; PM6 PML Windows NT Performance Monitor Log PMP VideoCraft GIF Animator Project; see VPR PMR Windows NT Performance Monitor report PMW Windows NT Performance Monitor workspace PMX Text document; Adobe InDesign; see AI, EPS PNG Graphics Interchange bitmap picture; highly–compressed picture, usually displayed with HTML documents, supporting streaming–media decompression; See MNG Internet GIF24; (Replacing GIF) (MIME: image/png) PNM Bitmap picture; UNIX "Portable any map" image; supported by The Gimp (http://www.gimp.org) PNT Bitmap picture; Macintosh SuperPaint PNTG Bitmap picture; same as PNT POL Policy (Windows 95 network setup) POL InnovMetric Binary POP Message; Pop–Mail POT Microsoft PowerPoint template POV Picture; Persistence of Vision ray–tracing POW Sound; Power–Chords chord chart PP Compressed Archive; Amiga Power–Packer PP4 Bitmap picture; Micrografx Picture Publisher 4; see PPF (MIME: image/tiff) PP5 Bitmap picture; Micrografx Picture Publisher 5; see PPF (MIME: image/tiff) PPD PostScript printer description PPA Wizard; Microsoft PowerPoint add–in PPF Micrografx Picture Publisher (MIME: image/tiff) PPL Polaroid Palette Plus color key PPM Bitmap picture; Portable Pixel map PPP Text document; PagePlus PPS Microsoft PowerPoint show PPS Personal Producer story board PPT Microsoft PowerPoint auto–running presentation PPT Document template; Page–Plus PPV Microsoft Pocket Powerpoint Presentation for Windows CE PPZ Microsoft PowerPoint PQI Power Quest Disk Image PQF Corel Presentations Runtime PQW Corel Presentations Runtime PR2 Presentation; Aldus Persuasion PR3 Presentation; Aldus Persuasion PRC PalmPilot Compiled Application PRC Corel Presentations Palette PRD Microsoft Printer Driver PRD Printer Description PRE Lotus Freelance 1.0–2.1, 96 Presentation; see FLG, PRZ PRF Bitmap picture; Improcess, Fast–Grah PRF Function list (Microsoft Profiler?) PRF Preferences (like INI) PRF Microsoft Windows printer color map PRG Database Program; dBase program PRG Atari ST program PRJ Project PRM Prolog module (tokenized code) PRN Document printed to a file; Lotus applications PRN PostScript document printed to a file; see PS PRO Prolog source code PRS Presentation; Harvard Graphics for Windows PRS Presentation; Lotus Freelance 2.x for OS/2 PRS WordPerfect Printer Description (driver) PRT Printer formatted file (from a Print–to–file operation) PRV Backup; previous version, likely created by a memory optimization program PRX Database program; FoxPro compiled format PRX Atari ST PRX Sound; Real Player Data PRZ Presentation; Lotus Freelance Graphics 97 or later; see PRE PS PostScript document; see AI EPS (MIME: application/postscript) PSD Bitmap Picture; Adobe PhotoShop; may include multiple- layers, vector objects, and a thumbnail image PSF Font; PostScript PSITEXT Text document; Psion TextEd PSIWORD Text document; Psion Word PSM Sound; Protracker Studio Module PSP Bitmap Picture; Paint Shop Pro 5 PSP Prodea Synergy PSR Powersoft Report PSS Adobe Type Manager PostScript stub file; see MMM PST Microsoft Exchange personal information store PT Kodak Precision Transform color matching; text PT Pop!site; HTML PT3 Document template; Aldus PageMaker 3; see PM3, PUB PT4 Document template; Aldus PageMaker 4 PT5 Document template; Adobe PageMaker 5 PT6 Document template; Adobe PageMaker 6 PTB PubTech Batch–Works PTE Pop!site; Pop!talk Errors PTI Pop!site; Pop!talk Include PTM PubTech Batch–Works PTX Pop!site; Pop!talk Server PUB Text document; Microsoft Publisher PUB Public key for Pretty Good Privacy (PGP) PUB Text document; Ventura Publisher PUB Aldus PageMaker 1 document; see PM3, PT3, PM6 PUB Text document; First Publisher PW Text document; Professional Write PWD Text document; Microsoft Pocket Word for Windows CE; see DOC PWP Text document; Professional Write Plus PWL Password list (Windows) PWZ Wizard; Microsoft PowerPoint wizard PX Database index; Paradox index PX1 Bitmap picture; Pixel Paint PXL Spreadsheet; Microsoft Pocket Excel for Windows CE; see XLS PXR Bitmap picture; Pixar PY Python script PYC Python compiled script PZP Palette; Pizzazz Plus PZP MGI PhotoSuite II Project, bitmap picture template and boilerplate image Q Archive; Quantum QAD Corel WordPerfect 7 PerfectFit QuickArt Picture Database NameSpace (WPG?); replaced by SCB, PFQuickArt QAG Norton Desktop group; see GRP QAP Omnis Quartz QBB QuickBooks for Windows QBE Query By Example; dBase, FoxPro, Paradox, Quatro Pro QBW Data; QuickBooks for Windows QCD Text document; QuarkCopyDesk SE text editor for groups using a QuarkXPress workflow; requires QuarkCopyDesk Filter to convert to QXD, or NotesXT plug-in to view QCD files directly with QuarkXPress QCP QD0 Data; Omnis Quartz; also QD1 ... QD9 QDF Quicken 98 data file, checks and transactions; see QSD, QEL, QTX QDT Quicken QDV Macintosh QED Quicken QEF Q+E database query QEL Quicken online payment services Data; see QDF, QSD, QTX QFL Document; Family Lawyer; see DDK QFO Bitmap picture; QFX 6.25 QFX Bitmap picture; Quick Link Fax; see QFO QIC Backup set for Microsoft Backup QIF Quicken Interchange Format; Quicken export file (like an address label) QL$ Microsoft compressed QLB; decompress with UNPACK.EXE QLB Quick Basic for DOS quick library used with Microsoft QB.EXE, QBX.EXE, VBDOS.EXE, QuickC 1.0 QML Document; Quick Markup Language QMF Lotus Approach database query QMT Quicken memorized list QNX Quicken data index QPR Database query; FoxPro query program QPX Database query; FoxPro compiled query QRT Picture; QRT Ray–Tracing QRY Database query; see SQL QSD Quicken 98 configuration, customization, and Data; see QDF, QEL, QTX QSF Micrografx QuickSilver; compressed Internet live graphic OST Microsoft Outlook off–line folder QT Movie Clip; QuickTime movie (MIME: video/quicktime) QTA Archive; qtar; see TAR QTC Apple QuickTime support file QTI Movie Clip; Apple QuickTime image QTIF same as QTI QTM same as QT QTX Quicken tax planning data; see QDF, QSD, QEL QTX Dynamic Link Library; Apple Quick Time extension; DLL QTW Apple QuickTime; see QT QW Text document; Q&A Write 1-3, 4 QWK QWK Mail packet file QXD Text document; QuarkXPress desktop publishing; QCD QXL QuarkXpress library QXT Document template; QuarkXPress R Resource Compiler; Macintosh Resource (like RC) R Fortran preprocessor source code; RatFor R Source code; REBOL Internet and network messaging language R Sourcer Disassembler; see WDF R8 Bitmap Picture; PicLab R8L Font; Hewlett–Packard laser printer landscape font R8P Font; Hewlett–Packard laser printer portrait font RA RealAudio, Internet sound; see RAW, RM, RPM (MIME: audio/x–pn–realaudio); competitor to MP3, WMA RAD Sound; Reality AdLib Tracker RAM RealAudio sound (MIME: audio/x–pn–realaudio) RAR Archive; open with WinRAR RAS Bitmap picture; Sun raster (also SUN) RAT Internet; Text–formatted "Recreational Software Advisory Council" Rating for the Internet (\WINDOWS\SYSTEM\RSACI.RAT defines and puts values on morality!) RAW Bitmap picture; digital camera picture that has not been processed by a separate bitmap editor; supported by Canon, Fujifilm, Minolta, Nikon and Olympus; separate filters or converters are required to open these files with bitmap editor programs like Adobe™ Photoshop™ RAW RealAudio sound; see RA RB1 Database; R:Base RB2 Database; R:Base RB3 Database; R:Base RB4 Database; R:Base RBH RoboHelp project configuration; see RTA, RTK RC Microsoft Windows Resource Compiler; resource script; see RH RC2 Microsoft Windows Resource Compiler; resource script RCT Microsoft Windows Resource Template; resource template RCV Microsoft Windows Resource Compiler; resource script RDI Bitmap Picture; see DIB, RIF RDL Paradox RDOFFObject; Relocatable object file; OBJ RDX Database; Borland Reflex RDY Symantec Ready or Symantec More for Macintosh REC Microsoft Windows Recorder macro RED Clarion Modula–2 REF Reference; (generic name) REG Registration entries | OLE registration entries REN RenderMan REP Report; Code–Reporter, Data–Boss REQ Text; Fido request RES Compiled resource (a program, more or less); created by the Windows Resource Compiler REV Text document; Adobe FrameMaker; see MIF REX OS/2 Rexx source code RF Text document; Adobe FrameMaker RF RealPlayer Real–flash RF Bitmap picture; Sun RFT Text document; Revisable Format Text; IBM DisplayWrite RFT–DCA RGB Bitmap picture RGB VideoCraft GIF RGS Script for Windows registry RH Microsoft Windows Resource Compiler header; see RC RIA Bitmap picture; Alpharel Group IV RIB Picture; 3D Reality | RenderMan RIC Fax document; Ricoh RIF Text Format; RIFF Resource Interchange File format RIF Bitmap picture; MetaCreation's Painter (formerly Fractal Design) RIFF Same as RIF RIP Picture; Remote Imaging Protocol RIX Bitmap picture; RIX paint programs RL4 Bitmap picture RL8 Bitmap picture RLA Bitmap picture; Wave Front RLB Harvard Graphics RLC Bitmap picture; Image Systems (also IGF, PIX) RLE Picture | Microsoft Imager (like Windows logo; similar to BMP) RLZ Computer Associates Realizer source code RM Sound or multimedia, RealAudio / RealMedia Internet media; see RA, RAW (MIME: audio/x–pn–realaudio) RMI MIDI sequence (sound) (MIME: audio/mid) RMM See RM RND AutoCAD; AutoShade rendering RNX Real Player RT, RP, RV ROL Sound; AdLib; Roland ROY TrueType RP Picture; Real Player Pix; see RT, RV RP1 Database text; R&R report file RPD Database; Ashton Tate RapidFile RPG The RPG programming language RPI RPL Document; Apple Macintosh Replica RPLN Dynamic Link Library; Adobe InDesign required plug–in (must be installed); DLL, APLN, PLN RPM RealAudio plug–in; see RA, RAM, RM (MIME: audio/x–pn–realaudio–plugin) RPT Crystal Reports RPT Database report; DataFlex RS Adobe PageMaker Resource library; DLL, PM6 RS6 Application program; IBM RS6000 executable RSL Paradox (used with FSL) RSP Linker response file (generic) RT Real Player text; see RNX, RP, RV RTA RoboHelp RTK RoboHelp help project keywords RTP Microsoft patch file (usually Microsoft VC++), used with RTPATCH.EXE RTF Rich Text Format; more–portable document format from Microsoft; see DOC RTM Sound; Real Tracker module RTP Software patch database for RTPatch RTS RTSL Progressive Networks Real Media (MIME: application/x–rtsl) RTS RoboHelp RTX Text document; Rich Text; see RTF RUL Expert System rule RV Movie clip; Real Player video; see RP, RT RWS Inprise (Borland) C++ Resource Workshop project RXD Database; Borland Reflex RWX Netscape Live 3D; see FLR RWX RenderWare S Source code (non–PC platforms); SCHEME source code S Assembly language source code; Dr. Dobbs C++ compiler S19 Motorola 16–bit EEPROM programming S2 Motorola 24–bit EEPROM programming S3 Motorola 32–bit EEPROM programming S3D Micrografx Simply 3D Project; see GED S3M Sound; Scream Tracker 16–channel music SA6 Street Atlas 6.0 SAIF Archive; geographical data; Spatial Archive Interchange SAL Database program; SQL application language SAL Database; SoriTec SAM Text document; Lotus AmiPro SAM Sound sample SAM Microsoft Office 97 file converter (DLL) SAS Used by SAS version 6.03 SAT Picture; ACIS 3D SAV Backup SBI Sound; Creative labs SoundBlaster instrument SBK Asymetrics ToolBook system book SBK Multimedia Subject/book?, Metatec Corp. SBK Sound Font technical details SBJ Clipart index; Micrografx clipart or palette SBK Asymetrics ToolBook SBP Database program; Super–Base 4 SBP Picture; IBM Story board SBR Source Browser for BSCMAKE SBT SuperBase 4 database text SBX Adobe Illustrator Tsume SC Source code; Paradox SC2 Microsoft Schedule Plus application SCA Database SCB Pictures; Corel WordPerfect 8 Scrapbook; see QAD SCC Source code control file; programming project file management SCD Microsoft Schedule application SCD SCODL drawing SCF Microsoft Windows Explorer command SCF Presentation; Score Maker SCH Microsoft Schedule application SCH Vector drawing; Schematic; ORCAD SCI Fax document; Sci–Fax SCI Bitmap picture; ColoRIX SCM ScreenCam movie; Lotus SCN Visual Basic SCN Cobol; see COB SCN TrueSpace 3D Scene SCP Microsoft Dial–Up Networking script SCP Bitmap Picture; ColorRIX SCR Screen Saver; Windows Screen Saver SCR Screen dump? SCR Bitmap picture; PCX SCR Screen font SCR Book Manager SCS ScreenCam script; Lotus SCT Scitex picture SCT FoxPro database program screen memo SCU Bitmap picture; ColorRIX SCX FoxPro database program screen SCX Bitmap picture; ColorRIX SCX Microsoft Class Browser form SCX Stanford Chart SD2 Sound; Sound Designer II compressed audio; MP3 SDA Drawing; Sun StarOffice 5 StarDraw; replaced by SXD in OpenOffice 6 SDB Starfish SideKick 2 database SDC Spreadsheet; Sun StarOffice 5 StarCalc; SMF replaced by SXC in OpenOffice 6 SDD Drawing; Sun StarOffice 5 StarImpress, based on StarDraw document (SDA); replaced by SXD in OpenOffice 6 SDE Drumbeat (Internet application) exported data; see EDF SDF Text; System Data File format, usually with fixed–column width SDI QuickBooks; data SDL Paradox SDL SmartDraw library SDL Sound; Inprise (Borland) Delphi sound library; CRL, IML, MAP SDM Document; mail; Sun StarOffice (OpenOffice) StarMessage SDP Bitmap picture; IBM Storyboard PIC SDR Vector drawing; SmartDraw SDS Drawing; StarOffice (OpenOffice) StarChart; replaced by SXD SDT QuickBooks; data SDT SmartDraw template SDML Drawing; Silicon Graphics Spacial Data Modeling Language SDW WordPro Drawing; Lotus SDW Text document; Sun StarOffice StarWriter 3, 4, 5, 5.2; replaced by SXD in OpenOffice 6 SDW SourceSafe files in shadow directory SEA Compressed Archive; Macintosh self–extracting archive; use Stuff–it to decompress SEC Data encryption key; PGP (Pretty Good Privacy) SEQ Presentation; Atari animation SEQ Sound; Guillomet Maxi Home Studio II; see 94B SET File set for Microsoft Backup SF Sound; IRCAM, MixView SF2 Font; Sound Font technical details SFI Bitmap picture; SIS frame grabber SFI Printer font; Ventura Publisher SFL Font; Hewlett–Packard laser printer landscape font SFN Font SFP Font; Hewlett–Packard laser printer portrait font SFS Data; Sun StarOffice (OpenOffice) StarMath StarFrameSetDocument SFX Sound; Sound effects for games SFX Setup; Speak Freely Sound Options; INI SG1 Stanford Graphics SGF Text document; Sun StarOffice (OpenOffice) StarWriter SGI Bitmap picture; IRIS, Silicon Graphics SGI Application program; Silicon Graphics Iris executable; DGL SGL Text document; Sun StarOffice (OpenOffice) StarWriter global document SGM SGML Structured Generalized Markup Language; see HTM SGML Same as SGM SGO IRIS Inventor Nodes SGP Stat Graphics Plus SGV Drawing; Sun StarOffice (OpenOffice) StarDraw SH Internet Program; UNIX shell script SH3 Harvard Graphics for DOS 3.0 Show SHA Archive; UNIX SHAR Bourne shell archive SHAM Picture; Dynamic Color Table; see CTBL SHAR Same as SHA SHB Microsoft Windows shortcut into a document SHB Corel Show Background SHE Windows 95 ".ShellExt" SHG Bitmap Picture; Segmented Hyper–graphics Bitmap with hot–spots, created by SHED.EXE, compiled with Windows help file compiler (HC.EXE) SHH Automated Setup template SHK Compressed Archive; Shrink–it for Apple ][ SHP Bitmap Picture; PrintMaster icon library SHS Windows Clipboard; Shell Scrap SHT HTML, SHTM, SHTML; structured HTML (MIME: text/html) SHTM Same as SHT SHTMLSame as SHT SHW Corel Show | Corel Presentations Show SHW Presentation; Harvard Graphics DOS 2.x Show SHX AutoCAD shape SILK Same as SLK SIM Intel VTune performance monitor SIT Compressed Archive; Stuff–It for Macintosh (MIME: application/x–stuffit) SKC SKCARD Starfish SideKick for Windows SKCard Same as SKC SKW SKWRITE Starfish SideKick Write or Calendar (same extension) SKWrite Same as SKW SLB AutoCAD slide library SLC Telix script SLD AutoCAD slide SLI Bitmap picture; MAGICorp slide SLK Silk (Symbolic Link) import format; Microsoft Multiplan spreadsheet; see MOD, RTF SLL Sound SLN Microsoft Visual Studio Solutions SM Text document; Samna; see LWP SM Source code; SMALLTALK SM Soft Spoken mailer SMC Lotus Freelance Graphics Smart master content; see MAS SMD Text document; Sun StarOffice (OpenOffice) SMF Data; Sun StarOffice (OpenOffice) StarMath; SDC SMF Fax document; Smart–Fax SMI Lotus Smart Suite Smart–icon SMI SMIL multimedia; see XML SMM Document; Lotus WordPro/AmiPro macro SMP Sound; Turtle Beach SMT Quick Books SMT Text document; Smart Ware SN3 Application program; Sun 3 executable SN4 Application program; Sun 4 executable SND Sound; (generic name) SND Internet sound (like AU) (MIME: audio/basic) SND Sounder/Soundtools SNF Picture; PCF SNG Sound; Midisoft Studio; see MID SNM Netscape folder cache SNO Source code; SNOBOL4 SNP SNP Microsoft Access 97 report snapshot SNX QuickBooks; Data SO UNIX shared library; see DLL SOB Visual Basic SOM Paradox sort information SON Sound; SBStudio II song SOU Sound SP Archive; UNIX Splint SPC Picture; Atari Spectrum SPD Bitstream Speedo font SPD PostScript printer description SPF Presentation; EnerGraphics SPI Bitmap picture; Philips, Siemens scanners SPIFFBitmap picture; new file format compatible with JPG SPL FutureSplash animation (Internet picture) (MIME: application/futuresplash) SPL Archive; Splint SPOP InterTrust Redemption Wizard SPR FoxPro screen program SPR Sprite (Internet animation?) SPR Text document; Borland Sprint word processor SPS Source code; SPSS SPT Source code; SPITBOL SPU Atari Spectrum SPW Jandel Sigma Stat Statistical Advisor SPW Spreadsheet; Sigma–Plot SPX FoxPro compiled program SPX SPITBOL; see SPT SQD Squish message data SQI Squish message data index SQL Structured Query Language (database query) SQZ Compressed Archive; Squeeze SR Bitmap picture; Sun Raster SRC Source code (generic) SSF Text document; Enable 2.0 SRL Medical Drug Reference search results; see MDR SRQ Microsoft Server request file; unprocessed SRS Bitmap picture; Sun Raster File SRS Microsoft Server request file; partially processed SS Bitmap picture; Splash SSC SourceSafe (source code control) configuration SSF Spreadsheet; Enable SSH Style sheet for Microsoft Internet Explorer SSL Corel Smart Library (Corel Flow) SSL Paradox SSM Sound; Real Player Streaming Media SSS Sound; Studio session song ST Source code; Small Talk ST NeoPaint ST Atari ST disk Image STD Picture; Prosa State Transition Diagram STF Lotus Agenda STF Compressed Archive; Shrink–to–Fit STG PageKeeper storage STI Symbol and type Information for portable executable program; see PE STL C++ Standard Template Library STL Stereo lithography STM HTML form; see SHT STML Same as STM STF Microsoft setup table file; see TDF STP Adobe Acrobat (Style?) STX CA–Simply Tax STX Text document; SmarText Electronic Book STY Microsoft Word for DOS style sheet; see DOT STY Micrografx Picture Publisher print style STY Ventura Publisher style sheet SUM SUN Bitmap picture; SUN Raster (also RAS) SUP Error suppression for Nu–Mega Technologies, Inc. BoundsChecker SUP Supplemental data (spelling checker user dictionary) SUP Bitmap picture; Apple Macintosh startup screen SVF Text; Serial Vector Format; data for IEEE 1149.1–based tests SVG Internet drawing; new Internet standard Scalable Vector Graphics format, supported by Web browsers with a plug-in utility program SVGZ Compressed SVG picture SVH Picture; Black Diamond Consulting (Surround Video—animated Internet picture) SVM Drawing; Sun StarOffice (OpenOffice) StarView Metafile SVR SuperScape ActiveX Superscape Viscape Control SVX Sound; Amiga; IFF SWECOIN Font; Swecoin Packet Format; Kiosk applications SWF Drawing; Macromedia Shockwave Flash Internet vector drawing; supported by plug-ins that display the pictures in most Web browsers, SWF files are created with drawing programs from Adobe, Corel and Macromedia SWP Windows virtual memory storage SWP Swap File SWP Backup; Borland Sprint word processor SXC Spreadsheet; Sun StarOffice 6, OpenOffice.org 6 in XML file format; replaced SDC SXD Drawing; Sun StarOffice 6, OpenOffice.org 6 in XML file format; replaced SDA SXG Text document; Sun StarOffice 6, OpenOffice.org 6 in XML file format word processor master document SXI Presentation; Sun StarOffice 6, OpenOffice.org 6 in XML file format; similar to SXP SXM Data; math formula compliant with MML (Math Markup Language) standards; Sun StarOffice 6, OpenOffice.org 6 in XML file forma SXP Presentation; Sun StarOffice 6, OpenOffice.org 6 in XML file format; compressed version of SXI SXW Text document; Sun StarOffice 6 in XML file format, OpenOffice.org word processor master document SY3 Harvard Graphics 3.x Symbol; see CH3 SYD Backup of a system file; created by a DOS–based memory manager like QEMM SYM Symbol; (generic name) SYM Harvard Graphics 2.x; see SY3 SYS System File T Tape archive; see TAR T2 TrueType font T44 Database; dBase temporary T65 Adobe PageMaker 6.5 template TAB Lotus 1–2–3 table TAB Microsoft Map table TAB Text; Tab–delimited data TAG Text; PM tagged text; see TXT TAG Database; DataFlex query TAL Adobe TypeAlign TAP Wave Sound; Action Wave TAR Archive; UNIX Tape Archive (TAR files are not compressed, see T, TAZ,TGZ); see QTA (MIME: application/x–tar) TARGABitmap picture; TGA TAZ Compressed Archive; TAR Compressed Tape Archive; ZIP format TBF Fax document; Imavox TurboFax TBF Visual FoxPro offline view TBK Asymetrix ToolBook TBK Backup; FoxPro memo backup TBL Table Editor 2.x TBS Intel VTune performance monitor TBX Project Scheduler TC Agfa Tone Curve, scanner configuration TCL Internet/x TCL TextPad clip library TCW Drawing; TurboCAD TDB Database; Tact TDF Microsoft setup program data; see STF TDF Bitstream Fontware description TDS Application debug information; Borland (Inprise) Turbo Debugger symbols for debugging; created by the ILINK32 linker when the program is linked; BPR TEF Fax document; Relisys TeFax TER Corel Flow line terminator (arrow picture) TEX Text document; TeX or LaTeX source document, document description (pronounced "Tek"); compiles to DVI TEX Texture picture (like Windows' Hover game) TEXI TEXINFO TEX Bitmap picture; Corel Texture tiled picture TEX Bitmap picture; Paint Shop Pro background tiled picture TEX Out–of–fashion "TEXT" file (like older Hewlett–Packard machines) TEXINFO Same as TEXI TFM TeX font metric | Intellifont font metric TG1 Project; On–Target TGA Bitmap picture; Truevision Targa picture TGZ ZIP Compressed archive; TAR tape archive (probably compressed); see GZ (MIME: application/x–compressed) THB Clipart; Hijack thumbnail THE Microsoft Plus Pack desktop theme THM Clipart; Micrographx Picture Publisher thumbnail (bitmap picture) THN THNL an Internet picture or index (?) THNL Same as THN THS Thesaurus TI Texas Instruments Calculator TIF Bitmap picture; Tagged Image File Format (TIFF) may contain multiple layers and alpha channels, in RGB or CMYK color (MIME: image/tiff) TIFF Same as TIF TIP Tip of the day for Microsoft and MFC (C++ class Library) applications. TK Data; Judy's Ten Key calculator tape TLB Windows Type Library (OLE/database) TLB Document; VAX Text Library TLH Used by Microsoft MSHTML TLI Used by Microsoft MSHTML TLP Project; Timeline TMP Temporary TMX Data; Translation Memory Exchange TNY Bitmap picture; Atari tiny picture TOC FrameMaker TOC Eudora TOS Archive; Atari self–extracting archive TP TP3 Harvard Graphics DOS 3.0 template TPL Lotus Approach database script TPL Template for Page Express; see DTP TPL Harvard Graphics Template TPM TextPad macro (Windows text editor); see TCL TPO Topo! map region TPP Turbo Pascal protected mode unit TPU Turbo Pascal unit TPZ Archive; TAR or GNU TRM Terminal; (generic name) TRN Translation (Windows) TSB TriSpectives 3D Drawing TSP Windows telephony Service Provider TSV Database; ODBC, Tab Separated Values; see CSV TSX TrueSpace 3D extension; see DLL TTC Font; TrueType font collection, multiple fonts in a single file(Far East Windows) TTF Font; TrueType font or TrueType Open Font; usually vector–based, but may also contain matching low–resolution bitmap screen fonts; see EOT, OTF, PFB TT_ Compressed TTF TUT Tutorial (generic) TV Paradox; used with FAM TV Lotus 1–2–3 world map TVC Lotus 1–2–3 map information TVS Paradox SQL table view setting TWS TextPad0.TWS (Windows text editor TextPad current settings) TWT Game; C–Armageddon TX8 Text document; DOS PC–8 Codepage 437 character set TX- TXF Archive; see TAR TXT Text File TXW Sound; Yamaha; see WAV TYM Picture; Time Stamp TZ Compressed Archive; Linux Archive; see TAR UC2 Compressed Archive; Ultra–Compressor II UCN Compressed Archive; Ultra–Compressor II UE2 Compressed Archive; Ultra–Compressor II Encrypted Archive UL Sound; Ulaw ULS Internet; User Location Service (Internet New Media Phone) (MIME: text/iuls) ULT Sound; Ultra–Tracker music UNI Data; Forecast–Pro UPD Text document (update) URL Internet shortcut USL Font; Hewlett–Packard laser printer landscape font USP Font; Hewlett–Packard laser printer portrait font USR UTF8 UTL QuickBooks; data UU Archive; not necessarily compressed, may be UUE UUE Archive; UUE encoded archive; see XXE UW Sound UWL V2S Unstable Media V2_OS system file VAL Spreadsheet; Macintosh spreadsheet (VALU) VAL Paradox VALU Same as VAL VAN Animation; Vista Pro VBA VBA module; Visual Basic for Applications (generic name) VBD Microsoft Visual Basic 5 active document (Internet/Intranet document) VBE Visual Basic for Applications script, encrypted for security; supported by Microsoft Windows 2000 or later or if Windows Scripting Host 2.0 is installed; encrypted VBS VBG Microsoft Visual Basic 5 project group; see VBP VBP Microsoft Visual Basic 4 or later project, Microsoft Setup Wizard (similar to MAK) vbproj Microsoft Visual Basic .Net project definitions; usually based on XML VBR Microsoft Visual Basic 4 remote support registry VBS MPEG movie clip VBS Visual Basic for Applications script; allowed as Microsoft Exchange e–mail attachment that can be run without security checking, yet may contain anything VBW Microsoft Visual Basic VBX Microsoft Visual Basic for Windows Extension VBZ Microsoft Setup Wizard template script. VC Spreadsheet; VisiCalc; see VCX VCF vCard Electronic business card VCF Microsoft Outlook V–Card file (MIME: text/x–vcard) VCP Workspace information (Microsoft Visual C++ 32–bit versions. WSP for 16–bit versions) vcproj Workspace information; Microsoft Visual Studio .Net project definitions; usually based on XML, used with config VCS Netscape Communicator calendar VCW Microsoft Visual C++ status file, 16–bit only; used with MAK files VCX Spreadsheet; VisiCalc Advanced; see VC VCX Microsoft Class Browser class library VDA Bitmap picture; Targa VDO Sound; "MIME" WEB token works with AVI files (MIME: video/vdo) VER Version description (Windows) VEW Lotus Approach database view (versions before 3.0); Clipper 5; see ADX VFB Font; FontLab font editor intermediate font format VFF Bitmap picture; Apple Macintosh VFZ Bitmap picture; decompressed or scaled by VFZ Plug-in for Adobe Photoshop from PFZ archive PSD VGA Bitmap picture. Same as BMP. Saved in VGA resolution for Microsoft MRBC.EXE; see CGA, EGA, 854 VGR Bitmap picture; Ventura Publisher VIC Bitmap picture; Vicar Graphics VID Video driver (Microsoft DOS applications) VID Bitmap screen buffer VIK Picture; Viking Graphics VIP Microsoft Visual InterDev project; see VJP VIV VivoActive ActiveX control (streaming video) VIVO Same as VIV VJP Microsoft Visual J++ project; see VIP VLB Corel Ventura Publisher library; see VP VLM Vector drawing; Ashlar DrawingBoard VLT Data; Vault outliner organizer VM Virtual Memory (swap file) VOB Video; DVD (Digital Versatile Disc) video object; usually found on a DVD video disc, in sizes up to 1-gigabyte; MPG VOC Sound; Creative Voice; SoundBlaster VOL Stacker VOR Document template; Sun StarOffice (OpenOffice) Vorlage (template) VOX Voice; (generic name) VP Text document; Corel Ventura Publisher; see VLB, $VP VPR VideoCraft Project (formerly PhotoMorph 2, by Andover Advanced Technologies); bitmap animation; see PMP VQA Video; compressed animation VRE VREAMScript extension; see VRW VRML Picture; Virtual Reality modeling language VRS VRW VREAMScript command language ActiveX 3D; see VRE VSC McAffee VirusScan configuration VSD Flowchart; Microsoft (formerly Shapeware) Visio 4.5, 5, 2000 document VSM Microsoft VisSim model VSS Microsoft Visio Smart Shapes VST Microsoft Visio Flowchart VST Bitmap Picture; TrueVision Vista VTS Intel VTune program performance monitor project file VUE Schedule+ views VUE FoxPro view VUE Animation; 3D Studio VUP Microsoft Visual Studio utility project VW Document; Volkswriter VWR Multimedia viewer, Metatec Corp. VXD Virtual device driver; 386 W Chart; Ashton Tate Applause W3D Graphic geometry instructions for creating live 3D images W51 Text document; WordPerfect 5.1 WAB Microsoft Outlook WAD Programming library WAV Wave Sound (MIME: audio/wav) WB1 Spreadsheet; Quatro Pro for Windows notebook WB2 Spreadsheet; Quatro Pro for Windows 6.0 notebook WB2 Spreadsheet; Lotus 1–2–3 for OS/2 WB3 Spreadsheet; Quatro Pro for Windows 7.0 notebook WBK Document; WordPerfect workbook WBK Data; Microsoft Office workbook WBK Backup; Microsoft Word WBT WinBatch WCH Corel Office PerfectScript; see CSC WCM Terminal; Microsoft Works communications WCM WordPerfect Macro; see WPM WCM Corel Presentations macro WD2 Database; Info Select Personal Information Manager version 5; by Micro Logic Corp. (www.miclog.com) WDB Database; Microsoft Works for Windows WDD Picture; Wright Design; DCM WDF Sourcer disassembler by V Communications; see R WFM Database form; dBASE Form Designer WFN Corel Draw Vector font WG1 Spreadsheet; Lotus1–2–3/G WG2 Spreadsheet; Lotus1–2–3 for OS/2 WHT Microsoft Net Meeting White board document WIF Weaving Information Format WIF Sound; Wavelet image WIN FoxPro window WIZ Microsoft Word Wizard WK1 Spreadsheet; Lotus 1–2–3 2.0, Symphony; see 123 WK3 Spreadsheet; Lotus 1–2–3 3.0, 3.1... WK4 Spreadsheet; Lotus 1–2–3 4.0, 5.0 WK5 Spreadsheet; Lotus 1–2–3 5.0 WKE Spreadsheet; Lotus 1–2–3 Educational version WKQ Spreadsheet; (Borland Quatro, early DOS versions) WKS Spreadsheet; Lotus 1–2–3 1 and 1A, Microsoft Works for DOS WLD Adobe Acrobat Distiller WLK Picture; Virtus Walk Through WLL Microsoft Word add–in; DLL WMA Sound; Microsoft Windows Media Audio; Windows Media Technologies 4.0 (WMT) music using MSAudio compression scheme with copy protection; competitor to MP3, RA WMC Text document; WordMarc WMF Microsoft Windows Metafile; vector drawing; see EMF WMS Microsoft Windows Media Player skin; user interface customizations WMV Movie Clip; Microsoft Movie Maker; proprietary lossy, copy-protected Video Clip output file format for Microsoft Windows ME or later, to compete with AVI and MOV; licensing issues restrict most video editing software from importing WMV files; WMV2 is a later version WND WinG hidden palette task WNL WOC Organization Chart WOD Internet document; Apple WebObjects, links a WOS file with HTML to create WOS Internet script source code; Apple WebObjects script for WOS files, contains actions (behaviors) and attributes for a document WP Text document; WordPerfect 4.2 WP5 Text document; WordPerfect 5.0–5.1 WP6 Text document; WordPerfect 6.0–6.1 WP7 Text document; WordPerfect 7 WP8 Text document; WordPerfect 8 WPC Windows 95 WordPad file converter WPD Corel WordPerfect; may be a document or data, which may require Visual Basic for Applications WPD Text document; PFS:WindowWorks WPF Form; Informs WPF Fax; WorldPort WPG WordPerfect graphic; DrawPerfect; versions 1.0-2.0 are used with WordPerfect 6.x or earlier WPJ Make Project WPM WordPerfect macro WPM Text document; WordPerfect for Apple Macintosh WPS Text document; Microsoft Works word processor WPT WordPerfect document template WPW WordPerfect for Windows (picture?) WPX Adobe printer description, for Postscript printing WQ! Spreadsheet; compressed Quatro Pro spreadsheet WQ1 Spreadsheet; Quatro Pro for MS–DOS WQ2 Spreadsheet; Quatro Pro 5 for MS–DOS WR1 Spreadsheet; Lotus Symphony 1.1, 1.2, 2.0 WRD Charisma template WRD Text document; Microsoft Word; DOC WRI Text document; Windows Write WRK Spreadsheet; Lotus Symphony 1, 1.01 WRL Live3D plug–in for Netscape 3D live picture; VRCreator file; see WRZ (MIME: x–world/x–vrml) WRL Internet document; see HTM WRP Archive; Amiga Warp WRZ Live32 Geometry for Netscape; see WRL WS Text document; WordStar 5–6 WS2 Text document; WordStar 2000 WS4 Text document; WordStar 4.0 for MS-DOS WS5 Text document; WordStar WS6 Text document; WordStar WS7 Text document; WordStar 7.0 WSD Text document; WordStar for Windows 1.0 – 2.0 WSL Lotus Fast–Site smart master WSP Workspace Information (Microsoft Visual C++, Fortran, 16–bit versions, use VCP for 32–bit versions) WST Text document; WordStar WST Working Set Tuner for Microsoft Make file; used by NMAKE.EXE WTA WinTune DLL WTD WinTune document (database of test results, binary) WTL Windows Template Library; ATL WTX WinTune export document (results of one test, text) WVL Sound; Wavelet compressed WW4 WinWhatWhere user activity log WWP Text document; Microsoft Works for MS–DOS WZS Wizard; Yet another Microsoft Word Wizard file type! X Microsoft DirectX SDK X Source code; LEX X10 Bitmap Picture; X–windows dump; also X11 X32 Macromedia Director Xtras; see DLL XAB Microsoft Mail address book XAR Vector drawing; Corel Xara XBM Bitmap picture; XBM Image (Internet) (MIME: image/x–xbitmap) XCF Bitmap picture; The Gimp (http://www.gimp.org) native file format XDF Floppy disk-image; XDFCOPY XDOC Text document; Xerox ScanWorX and TextBridge scanned document XFX Fax document; JetFax XG0 Database index; Paradox secondary index; see YG0; changes to XG1, XG2... XG1 Database index; Also XG2, XG3... XIF Bitmap picture; like GIF XIP HP–95 execute–in–place program (modified small–model EXE) XL Spreadsheet; Microsoft Excel for Apple Macintosh XLA Microsoft Excel add–in XLB Microsoft Excel worksheet XLC Microsoft Excel chart XLD Microsoft Excel dialog XLK Backup; Microsoft Excel XLL Microsoft Excel XLL add–in XLM Microsoft Excel macro sheet XLS Microsoft Excel worksheet XLT Microsoft Excel 4.0, 95-2000 template XLT Translation table for Lotus programs XLV Microsoft Excel VBA module XLW Microsoft Excel workspace; !Data XM Sound; see MID, MOD XMI Sound; see MID XML Internet document; Extensible Markup Language; also used by >98 versions of Microsoft Office. see HTM, XSL XPM Bitmap picture; X–Windows picture map; see XWD XQT Spreadsheet macro; SuperCalc XQT Waffle XSL Extensible Style Sheet Language, used with XML; see CSS, XML XTN XV Bitmap Picture; Khoros VIFF XWC Crosstalk for Windows compiled script XWD Bitmap picture; X–Window dump; see XPM XWP Crosstalk for Windows phone book XWP Text document; Xerox Writer XWS Crosstalk for Windows script XXE Archive; see UUE XXT Extension DLL (rare) XY Text document; XYWrite XY3 Text document; XYWrite III XYW Text document; XYWrite III for Windows, XyWrite Signature Y YACC grammar Y Archive; Amiga YABBA YEL Yellow color separation. BLA (black) CYA (cyan), MAG (magenta) Adobe color separation YG0 Database Index; Paradox secondary index; see XG0 YG1 Database Index; Also YG2, YG3... YUV Picture; YUV4.1.1 Z Compressed Archive; created with UNIX compress program (MIME: application/x–compress) ZABW Compressed Archive; G–Zipped AbiWord document; ABW, GZ ZER Database; Zerberus ZFX Compressed Archive; ZIP ZGM Bitmap picture; Zenographics ZIP Compressed Archive; selects among several algorithms to optimally reduce file sizes; originally created by the late Phil Katz for use with PKZip, now an industry–standard file format (MIME: application/x–zip–compressed) ZLIB Archive ZLG Binary database; Zilog processors; see IHX YM Sound; compressed binary Chip–Music ZOM Compressed Archive; Amiga zoom ZOO Compressed Archive ZVD Sound; ZyXEL voice _H Adobe Type Manager Japanese font outline see PFB _V Adobe Type Manager Japanese font metrics; see PFM {PB Data; Corel WordPerfect "Print Broker" temporary {QC Data; Corel WordPerfect "Queue Code" temporary ~$~ Temporary ~DF Backup; Borland Delphi Form backup of a DFM file ~DP Backup; Borland Delphi Project backup of a DPR file ~PA Backup; Borland Delphi Pascal backup of a PAS file ~~~ Temporary