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$$$ A generic temporary file ( also seeTMP)A.A Assembly source code.ABK CorelDRAW AutoBackup file.ACL CorelDRAW 6 keyboard accelerator.ACM Audio Compression Module (add-on to MSACM.DRV Windows audio driver).AD Library module for After Dark screensaver.ADF Adapter Description file.ADL MicroChannel Adapter Description Library file.ADM After Dark MultiModule screensaver.ADR After Dark Randomizer screensaver.AFM Adobe Font Metrics.AI Adobe Illustrator drawing.AIF Apple Mac AIFF sound.AIO APL I/O.ALB JASC Image Commander album.ALL Arts & Letters Library.AND Add In Utility.ANI Animated Cursor.ANN Annotations.ANS ANSI text.APL APL workspace.APP Application.ARC LH ARC (old version) compressed archive file.ARJ Robert Jung ARJ compressed archive file.ART Xara Studio drawing.ASC ASCII text.ASD WinWord AutoSave.ASM Assembly source code.ASP Active Server Page.ATT AT&T Group 4 bitmap file.AUX Auxiliary file.AVI Mcft Audio Video Interleave (Video for Windows).AWD FaxView documentB.B BASIC source code.B4 Helix Nuts and Bolts file.BAK Backup file.BAS BASIC source code.BAT Batch file.BBL Bibliography file.BFC Windows 95 Briefcase document.BG Backgammon for Windows game.BGI Borland Graphic Interface.BI Binary file.BIB Bibliography file.BIN Binary file.BK! Backup file.BLD BASIC Bload data.BM1 Apogee BioMenace data file.BMK Bookmark file.BMP OS/2 or Windows bitmap file.BNK Ad-lib Instrument ID file.BS1 Apogee Blake Stone data file.BSC Boyan Script.BSV BASIC Bsave dataC.C C source code.CAL Calendar schedule data.CAT Catalog file.CB Mcft clean boot file.CBK Wave Blaster sound bank file (alternate sets of sounds and instruments).CBL Cobol source C/C++ source B Visual Basic Animated Button H Corel Chart.CDA CD Audio Track.CDF Comma delimited format.CDR CorelDRAW picture.CDT CorelDRAW template.CDX CorelDRAW compressed drawing.CFG Configuration file.CGM Computer Graphics metafile.CHK CHKDSK information.CHP Ventura Publisher chapter.CIL Clip Gallery download package.CK1 iD/Apogee Commander Keen 1 data file.CK2 iD/Apogee Commander Keen 2 data file.CK3 iD/Apogee Commander Keen 3 data file.CK4 iD/Apogee Commander Keen 4 data file.CK5 iD/Apogee Commander Keen 5 data file.CK6 iD/Apogee Commander Keen 6 data file.CLI Aldus Photostyler clipboard file.CLP Mcft Windows clipboard viewer data file.CLS Visual Basic Class Module.CMD Command file.CMF Corel metafile.CMF Creative Music file (a Creative Labs format for the Sound Blaster).CMP Address document.CMP JPEG Bitmap.CMV Corel Move animation.CMX Corel Presentation Exchange F Configuration Q Compuworks Design Shop file.COB Cobol source code.COD Code Command file (program).CPD Fax Cover document.CPE Fax Cover document.CPI Character Pixel Information.CPI Code Page Information.CPL Control Panel item.CPL Corel Color palette.CPP C++ source code.CPR Corel Presents Presentation.CPT Corel PHOTO-PAINT image.CPX Corel Presentation Exchange compressed drawing.CRD Cardfile file.CRP Corel Presents Run-Time Presentation.CRT Certificate file.CSC Corel Script.CSP PC Emcee On-Screen image.CSV Comma delimited text.CT Scitex CT Bitmap.CUE Mcft Cue Cards data.CUR Windows Cursor file.CUT Dr Halo bitmap.CV Corel Versions archive.CVF Compressed Volume FileD.DAT Data file.DAT WordPerfect Merge Data.DBF Ashton-Tate dBASE database.DBG Debug info.DBX DataBeam image.DCS Desktop Color Separation file.DCT Dictionary file.DCX Fax image (based on PCX).DDE Interprocess communications (IPC) protocol to support exchange of commands and data.DDF BTRIEVE database.DEF C++ Definition file.DEF Defaults file.DEF SmartWare II data file.DEM Demo file.DER Certificate file.DES Description file.DIB Device Independent Bitmap (a graphics format).DIC Dictionary file.DIF Data Interchange Format spreadsheet.DIF Difference file.DIR Directory file.DLG C++ Dialogue Script.DLL Dynamic Link Library (executable code module for Windows).DOC Mcft Word document.DOC WordPerfect document.DOC WordStar document.DOT Mcft Word document template.DRS Driver Resource file.DRV Driver files for Windows.DRW Drawing file.DRW Micrografx Designer/Draw.DSC Description file.DSQ Corel QUERY file.DTA Data file.DVR Device driver file.DWG AutoCAD drawing.DXF AutoDesk Drawing Interchange FormatE.EMF Enhanced Windows metafile.EML E-Mail file.ENC Encoded.EPS Encapsulated PostScript image.EVY Envoy document.EWL Mcft Encarta document.EXE Executable file (program)F.FAV Mcft Outlook navigation bar.FAX Fax bitmaps in CCITT format.FAX FAX Type image.FH3 Aldus Freehand 3 drawing.FLC Autodesk hi-resolution animation file.FLI An animation (flick) file format created using Autodesk Animator.FLT Filter file: a DLL used by Corel, or for Aldus and Winword for import.FMT Mcft Schedule+ print file.FOG Fontographer font.FON System font.FOR Fortran source code.FOT Font-related file.FP FileMaker Pro file.FP1 Flying Pigs for Windows data file.FP3 FileMaker Pro file.FPX FlashPix bitmap.FRM Generic form file.FRM Visual Basic form.FRM WordPerfect Merge Form.FRX Visual Basic form stash fileG.GAL Corel Multimedia Manager album.GED Graphic Environment Document (drawing).GEM GEM metafile.GEN Ventura-generated text file.GFI Genigraphics Graphics Link presentation.GFX Genigraphics Graphics Link presentation.GFX Instant Artist graphics file.GID Windows 95 global index file (containing help status).GIF Graphic Interchange Format (CompuServe bitmap).GIM Genigraphics Graphics Link presentation.GIX Genigraphics Graphics Link presentation.GLY Glossary file.GNA Genigraphics Graphics Link presentation.GNX Genigraphics Graphics Link presentation.GRA Mcft Graph.GRF Graph file.GRP Windows Program Manager Group.GWX Genigraphics Graphics Link presentation.GWZ Genigraphics Graphics Link presentation.GZ Unix Gzip compressed fileH.H C program header.HED HighEdit document.HEL Mcft Hellbender saved game.HEX Macintosh BinHex 2.0 file.HGL HP Graphics Language drawing.HLP Help file.HPJ Visual Basic Help Project.HPP C++ program header.HQX Macintosh BinHex 4.0 file.HST History file.HST Host file.HT HyperTerminal file.HTM Hypertext document file.HTML Hypertext document fileI.IBK Instrument Bank file for the FM chip, specifying parameters for a particular sound.ICB Targa bitmap.ICO Windows Icon file.IDD MIDI Instrument Definition.IDX Index file.IFF Amiga ILBM file.IGF Inset Systems metafile.IIF QuickBooks for Windows interchange file.IMA WinImage file.IMG GEM bitmapped graphics file.INF Windows application Setup information files.INI Windows initialization files that define your Windows environment.INS X-Internet sign-up file.ISP X-Internet sign-up file.IW Idlewild screensaverJ.JFF JPEG bitmap.JFIF JPEG File Interchange Format.JIF JPEG bitmap.JN1 Epic MegaGames Jill of the Jungle data file.JNK Junk.JPEG JPEG bitmap.JPG JPEG bitmap.JTF JPEG bitmapK.KDC Kodak Photo-Enhancer.KFX KoFax Group 4 image.KIF Knowledge Interchange Format.KYE Kye game dataL.LBM Deluxe Paint bitmap.LBR Library file.LDB Mcft Access lock file.LEG Legacy document.LET Letter file.LIB Library file.LOG Log file.LPD Helix Nuts and Bolts file.LRC Intel Video Phone file.LRS Language Resource file.LST List file.LZH LH ARC compressed archive.LZS Skyroads data fileM.M3D Corel Motion 3D animation.MAC MacPaint bitmap format.MAC Macro file.MAD Mcft Access Module.MAF Mcft Access Form.MAI Mail.MAK Visual Basic or MS Visual C++ Project.MAM Mcft Access Macro.MAP LInk MAP file.MAQ Mcft Access Query.MAR Mcft Access Report.MAT Mcft Access Table.MAZ Hover maze data.MB1 Apogee Monster Bash data file.MCC Dialer10 calling card.MCS MathCAD image.MCW Mcft Word for Macintosh document.MDA Mcft Access add-in.MDE Mcft Access MDE file.MDF Menu Definition File.MDN Mcft Access blank database template.MDW Mcft Access Workgroup.MDZ Mcft Access wizard template.ME Information file (i.e., READ.ME), typically in text format.MEN Menu file.MET Presentation Manager metafile.MI Miscellaneous.MIC Mcft Image Composer file.MID MIDI music file.MMF Mcft Mail File.MMM Mcft Multimedia Movie.MNU Menu file.MOD A sound file format used with Amiga systems.MOD Mcft Multiplan spreadsheet.MOV QuickTime for Windows movie.MPE MPEG animation.MPEG MPEG animation.MPG MPEG animation.MSD Mcft Diagnostics report file.MSG Mcft Mail message.MSN Mcft Network document.MSP Mcft Paint bitmap.MUS Music file.MVB Mcft Multimedia Viewer fileN.NAP NAP metafile vector image.NDX Index file.NEW New file.NFO Information fileO.OBD Mcft Office Binder or template.OBJ Object file.OBZ Mcft Office Binder wizard.OCX Visual Basic custom control.OFN Mcft Office File New file.OFT Mcft Outlook template.OLB OLE Object Library.OLD Old file (i.e. CONFIG.OLD).OLE OLE object.OPT Options Organizer file.ORI Original.OUT Outline file.OVL Overlay file.OVR Overlay fileP.P10 Tektronix Plot 10 drawing.P65 Pagemaker 6.5 file.PAB Mcft Personal Address Book.PAK Packed file.PAL Palette file; used by many programs, generally each with their own format.PAS Pascal source code.PAT Corel Draw pattern.PAT Patch file.PBK Mcft Phonebook.PBM Portable bitmap file.PCD Kodak Photo CD file.PCL HP Laserjet bitmap.PCS PICS animation file.PCT Macintosh PICT drawing.PCX Zsoft PC Paintbrush picture file.PDF Adobe Acrobat Portable Document Format.PDX Paradox file.PFA Type 1 font (ASCII).PFB Type 1 font (binary).PFC PF Component.PFM Printer Font Metrics.PGL HP Plotter drawing.PGM Portable Graymap (bitmap).PGP Program Parameter.PHO Phone list file.PIC Lotus picture/Macintosh drawing/PC Paint bitmap.PIF Program Information File containing information about a non-Windows application.PIX Inset Systems bitmap.PLL Pre-Linked Library file.PLT AutoCAD Plot drawing.PLT HPGL Plotter drawing.PM5 Pagemaker 5.0 file.PM6 Pagemaker 6.0 file.PNG Paint Shop Pro Browser catalog.PNG Portable Network Graphics bitmap.PNT MacPaint graphic file.POT Mcft PowerPoint template.PP4 Picture Publisher 4 bitmap.PPA Mcft PowerPoint add-in.PPM Portable Pixelmap bitmap.PPS Mcft PowerPoint slide show.PPT Mcft PowerPoint presentation.PRD Printer driver file.PRE Lotus Freelance presentation.PRF Windows Preferences file.PRG Program file.PRN Print Table (space delimited text).PRS Harvard Graphics for Windows presentation.PS PostScript file.PSD Adobe Photoshop bitmap.PST Mcft Outlook Personal Folder file.PUB Mcft Publisher publication file.PUB Ventura Publisher publication file.PWD Mcft Pocket Word document.PWZ Mcft PowerPoint Wizard.PXL Mcft Pocket Excel spreadsheetQ.QAD QuickArt document file.QBW QuickBooks for Windows file.QLB Quick Library file.QRY Mcft Query file.QT QuickTime Movie format.QTM QuickTime Movie formatR.RA Real Audio sound.RAM Real Audio sound.RAS Sun Raster Images bitmap.RAW Raw file format (bitmap).RC Mcft Visual C++ Resource Script.REC Recording file.REF Reference file.REG Registration file.RES Mcft Visual C++ Resource.RFT RFT-DCA.RLE Run Length Encoding for compressed bitmap files.RMI Windows alternate MIDI synthesized sound format.ROL Adlib sound file format.ROV Rescure Rover data file.RPT Mcft Visual Basic Crystal Reports file.RTF Rich Text Format documentS.SAM Ami Professional document file.SAV Saved file (i.e., saved game).SBI Sound Blaster Instrument file.SBK AWE-32 Sound Bank file containing alternate sets of sounds and instruments.SC2 Mcft Schedule+ 7.SCD Matrix/Imapro file.SCD Mcft Schedule+ 7.SCH Mcft Schedule+ 1.SCO DL slide image file.SCP Dial-Up Networking Script.SCR Fax image file.SCR Script file, screen saver, or screen capture.SCT Scitex CT bitmap file.SDF Standard Data Format.SDL SmartDraw library file.SDR SmartDraw drawing.SDT SmartDraw template.SEP Tagged Image File Format (TIFF) bitmap.SHB Corel Show presentation.SHB Document shortcut file.SHG Hotspot bitmap file.SHS Shell scrap file.SHW Corel Show presentation file.SLK Symbolic Link (SYLK) spreadsheet.SMM Lotus AmiPro spreadsheet file.SND Raw sound file format—also a sound file used in Mac systems.SND Mac Sound Resource file.SND NeXT sound file.SPL Spell checker.STY Ventura style sheet file.SUP Supplemental file.SVX Amiga 8 sound file.SWP Swap file.SYM Symbol file.SYS System device driver (such as HIMEM.SYS)T.TAR Tape Archive file.TAZ UNIX Gzip/Tape Archive file.TBX Toolbox file.TDF Trace Definition File.TDF Typeface Definition File.TEX Texture file.TFM Tagged Font Metric.TGA Targa “Tru Color” bitmapped format.TGZ UNIX Gzip/Tape Archive file.THD Thread.THN Graphics Workshop for Windows thumbnail.THS Thesaurus.TIF Tagged Image Format.TIG Tiger file—used by U.S. government to distribute maps.TLB OLE Type Library.TMP Windows temporary file.TRM Terminal file.TST Test file.TTF TrueType Font file.TWF TabWorks file.TWW Tagwrite template file.TX8 MS-DOS text file.TXT Generic text (ASCII) formatV.VBP Visual Basic Project.VBX Visual Basic Extension or custom control.VBS Virtual Basic script file.VDA Targa bitmap.VLB Corel Ventura Library.VOC Creative voice file created with a Sound Blaster card.VP Ventura Publisher publication.VST Targa bitmap.VSW Visio Workspace file.VXD Windows virtual device driver fileW.WAV Windows waveform audio file.WB1 QuattroPro for Windows spreadsheet.WB2 QuattroPro for Windows spreadsheet.WBK Mcft Word Backup.WBL Argo WebLoad II upload file.WCM WordPerfect Macro.WDB Mcft Works database.WEB CorelXara Web document.WGP Wild Board Games data file.WID Ventura width table.WIL WinImage file.WIZ Mcft Word Wizard.WK1 Lotus 123 versions 1 & 2 spreadsheet.WK3 Lotus 123 version 3 spreadsheet.WK4 Lotus 123 version 4 spreadsheet.WKS Lotus 123 Worksheet spreadsheet.WKS Mcft Works document.WLF Argo WebLoad I upload file.WLL Mcft Word add-In.WMF Windows metafile vector graphics format.WP WordPerfect document.WP4 WordPerfect 4 document.WP5 WordPerfect 5 document.WP6 WordPerfect 6 document.WPD WordPerfect demo.WPD WordPerfect document.WPG WordPerfect graphic.WPS Mcft Works document.WPT WordPerfect template.WPW Novel PerfectWorks document.WQ1 QuattroPro/DOS spreadsheet.WQ2 QuattroPro/DOS version 5 spreadsheet.WRI Write document file.WRL Virtual reality model.WS1 WordStar for Windows 1 document.WS2 WordStar for Windows 2 document.WS3 WordStar for Windows 3 document.WS4 WordStar for Windows 4 document.WS5 WordStar for Windows 5 document.WS6 WordStar for Windows 6 document.WS7 WordStar for Windows 7 document.WSD WordStar 2000 document.WVL Wavelet compressed bitmap fileX.XAR Corel Xara drawing.XLA Mcft Excel add-in.XLB Mcft Excel toolbar.XLC Mcft Excel chart.XLD Mcft Excel dialog.XLK Mcft Excel backup.XLM Mcft Excel macro.XLS Mcft Excel worksheet.XLT Mcft Excel template.XLV Mcft Excel VBA module.XLW Mcft Excel workbook/workspace.XML Extensible Markup Language files.XR1 Epic MegaGames Xargon data file.XTP XTree data file.XY3 XYWrite III document.XY4 XYWrite IV document.XYP XYWrite III Plus document.XYW XYWrite for Windows 4.0 documentY.YAL Arts & Letters clipart library.YBK Mcft Encarta YearbookZ.Z UNIX Gzip (compressed).ZIP PKZIP archive fileA ADA ProgramA UNIX LibraryA01 ARJ Multi-volume Compressed ArchiveA01 - A10 OzWin CompuServe E-mail/Forum Access SYSOP FileA11 AIIM GraphicA31 Authorware 3.x LibraryA3D Amapi 3D ModelingA3K Yamaha A3000 Sampler FileA3L Authorware 3.x LibraryA3M Unpackaged Authorware Mac OS FileA3W Unpackaged Authorware Windows FileA41 Authorware 4.x LibraryA4L Authorware 4.x LibraryA4M Unpackaged Authorware Mac OS FileA4P Authorware File Without RuntimeA4W Unpackaged Authorware Windows FileA51 Authorware 5.x LibraryA5L Authorware 5.x LibraryA5W Unpackaged Authorware Windows FileA8 Cubicomp PictureMaker 24bit 3D Animation (DOS-based animation program; graphics cards external to computer; Cubicomp closed 1990)A86 A86 Assembler Program FileAA Audio Book FileAAB Macromedia Authorware BinaryAAC Advanced Audio Coding FileAAM Authorware Shocked FileAAS Authorware Shocked PacketAB Applix Builder FileAB$ AutoCAD Spooled Plot FileAB2 Parson's Address BookAB6 AB Stat DataAB8 AB Stat DataABA Palm Address Book FileABC FlowchartABD Adventure Builder DatabaseABD AmBiz Bonus Calculator Data FileABF Adobe Binary Screen FontABK Any Automatic BackupABK Corel Draw AutoBackupABL Maxagrid Avails Data File (text format)ABM Album File (various)ABM HitPlayer Audio Album FileABM Photo Impressions 2000 AlbumABO Applix Builder Turbo FileABR Adobe Photoshop BrushABS Abscissa Data FileABS AbstractsABS MPEG Audio Sound FileABS PC GNU Compiler OutputABT The Arbiter Sports Official ScheduleABW AbiWord Document FileABX WordPerfect Address Book FileAC CaseWare Working Papers Client FileAC$ AutoCAD Undo InfoAC_ CaseWare Working Papers Compressed Client FileAC3 AC3 Audio File FormatACA MS Agent Character FileACA Project Manager Workbench FileACB ACBM Graphic ImageACB Archived Data FileACC DR-DOS Viewmax FileACD allCLEAR Flowcharting FileACD Chromeleon Channel Raw DataACD MS Agent Character Definiton FileACD Sonic Foundry Acid Music FileACE The Ace Archiver Compressed FileACF Adobe Photoshop Custom FilterACF MS Agent Character FileACG MS Agent Preview FileACH Rockwell Software Logix 5 FileACI ACI Development AppraisalACL ACL for Windows (data mining software)ACL Corel Draw 6 Keyboard AcceleratorACL MS Office Auto Correction ListACM ACBM Image FileACM Adobe Photoshop Command ButtonACM Audio Compression Manager Driver (used by Windows in the system directory)ACM Interplay Compressed Sound FileACO Adobe Photoshop Color Swatch FileACP File Used by Adobe Acrobat Paper CaptureACP MS Office Assistant Preview FileACQ AcqURL File (bookmark manager)ACR American College of Radiology FileACS MS Agent Character FileACT Action! PresentationACT Adobe Photoshop Color TableACT Documenting Wizard Action Diagram (used by MS Visual FoxPro 6)ACT MS Office Assistant Actor Program FileACU AppleLink-PE Compression Format (created by Floyd Zink; overtaken by Andy Nicholas' ShrinkIt; ShrinkIt should unpack)ACU COBOL Intermediate Object FileACV Adobe Photoshop Saved CurveACV OS/2 drivers that compress and decompress audio dataACW MS Accessibility Wizard SettingsAD After Dark Screen SaverAD Ascend Password Protocol FileAD! OzWin CompuServe E-mail/Forum AccessAD2 2-bit Compressed Voice FileAD3 3-bit Compressed Voice FileADA ActiveDocs Answer SetADA ADA Program FileADB ADA Package BodyADB Appointment database used by HP 100LX organizerADC ActiveDocs Clipping CatalogADC Chromeleon Demo Data FileADC Lingvo Dictionary Text FileADC Scanstudio 16-color Bitmap Graphic FileADD Adobe PageMaker FileADD Advantage Database Server Data DictionaryADD OS/2 Adapter Device Driver (used in the boot process)ADE ADC Audio FileADE MS Access Project ExtensionADF Adapter Description FileADF Administration Configuration FileADF Amiga Disk FileADI Advantage Data Server Database Index FileADI AutoCAD Plotter FileADJ LISCAD Plus Adjustment FileADL OzWin CompuServe E-mail/Forum Access QS-Special Get MarkedADL QEMM MCA Adapter Description LibraryADM Addict Compiled DictionaryADM Advantage Data Server Database Memo FileADM After Dark Screen Saver ModuleADM Windows Policy TemplateADN 1-2-3 Add-in UtilityADN MS Access Blank Project TemplateADO Adobe Photoshop Duotone OptionsADO Stata ProgramADP AOLserver Dynamic Page FileADP Astound Dynamite FileADP FaxWorks Modem Setup File (for fax modem interaction)ADP MS Access ProjectADR Address BookADR Address Plus DatabaseADR After Dark Random Screen Saver ModuleADR Smart Address Address BookADS ADA Package SpecificationADT AdTech Fax FileADT Advantage Data Server Database FileADT HP NewWave Card Application Data FileADT Lingvo Dictionary FileADV GUS Virtual Device DriverADX Archetype Designer DocumentADX Dynazip Active Delivery ScriptADX Lotus Approach Index FileADZ GZ-Packed Amiga Disk File (see ADF)AE SoftQuad Author/Editor FileAEH iPer Advanced Embedded HypertextAEP Adobe After Effects project fileAEP ArcExplorer Project FileAER Adobe Atmosphere FileAEU MS AutoRoute Express Europe RouteAEX PGP Armored Extracted Public Encryption KeyAF2 ABC Flowchart File (now Micrografx FlowCharter)AF3 ABC Flowchart File (now Micrografx FlowCharter)AFC Apple Sound FileAFC ArisFlow Commander FileAFD ArisFlow DiagramAFD Prismo Graphics ActiveFile DataAFF AnyForm FormAFI Truevision Bitmap GraphicAFL Lotus FontAFM Adobe font metricsAFM HP NewWave Cardfile ApplicationAFM LOUT File (High-Level Language For Document Formatting)AFM Outline Font MetricAFP Flowchart Symbol PaletteAFP IBM Transactional Data Format (Advanced Function Print) (AS400 computer)AFP Papyrus Document Storage FormatAFP Prismo Graphics ActiveFile ProxyAFS Filter Factory Photoshop FilterAFT AnyForm TemplateAFT Flowchart TemplateAFW Flowchart Work AreaAFX Auto FX Photographic Edges (Photoshop add-in)AG Applix GraphicAG Argus Spreadsheet FileAG4 Access G4 FileAGP Aspen Graphics PagesAGW Aspen Graphics WindowsAHQ AudioHQ Plugin ModuleAHS Adobe Photoshop Halftone ScreensAI Adobe Illustrator drawing (vector graphic)AI Advantage Database Server FileAI Corel Trace DrawingAI Progress Database After Image FileAIF Audio Interchange FileAIF Knowledgeware Setup InformationAIF Mac OS AIFF soundAIF SymbianOS Application Information FileAIFC Audio Interchange File (similar to AIF)AIFF Audio Interchange File (similar to AIF)AIL AutoImager File (batch image conversion)AIM AOL Instant Messenger FileAIML Artificial Intelligence Markup LanguageAIN AIN Compressed ArchiveAINSO VAX CRYSTALS Chemical Crystallogaphy FileAIO APL File Transfer FormatAIP Audiosoft Parameter FileAIR Align It! Resource FileAIR Flight Simulator Aircraft Performance Info FileAIS ACDSee Image Sequence FileAIS Array of Intensity Samples (Graphic)AIS Velvet Studio InstrumentsAIX HP NewWave Cardfile Application DataAKF Acrobat Key FileAKW RoboHELP Help Project Index FileALA Alan Adventure Language FileALA Sharp Fax File (unverified)ALB JASC Image Commander AlbumALB Steinberg Cubase or VST Backup Song FileALBM HP Photosmart Photo Printing AlbumALBM webAlbum Photo AlbumALC dataAlchemy project filesALC Norton Internet Security Ad Server FileALF Abacus Law FileALF ACT! User Logon TrackingALF AdventNet Look and Feel Standards (ALFSTANDARDS.ALF)ALF ALF Logic File ("Another logical framework", structure editor for Martin-L?f's monomorphic type theory)ALF Aventail Connect License File (AVENTAIL.ALF)ALF Cadence Ambit BuildGatesALF LANDesk Client Manager Configuration FileALF VPCom Remote User Configuration FileALI OM2 OMALI Native OMALI DocumentALI SAP Proprietary Format Document FileALL Always Working Page Format FileALL Arts & Letters Library, symbols and charactersALL Steinberg Cubase or VST Song FileALL WordPerfect Printer InfoALS Alias ImageALS Calmira Shortcut FileALT WordPerfect Menu FileALV Adobe Photoshop LevelsALX OM2 OMALI Plug-in ExtensionALZ ALZip Compressed File (Korean site)AM Advantage Database Server FileAM Applix SHELF MacroAM2 AutoPlay Menu Studio Version 2AM3 AutoPlay Menu Studio Version 3AMB Radiance Ambient File FormatAMC Ant Movie CatalogAMF Advanced Module Format Music FileAMF DSMIA/Asylum Module MusicAMG AMG ACTOR System ImageAMG AMGC Compressed Archive (alternate site)AMI Cocreate SolidDesigner Annotation FileAMM AMM File (pattern design pgm for Universal flat knitting machines)AMP Adobe Photoshop Arbitrary Map SettingsAMS Adobe Photoshop Monitor SetupAMS Extreme's Tracker Module FormatAMS Velvet Studio music module (MOD) fileAMZ The Amazon Trail Saved GameAN Groundworks Text FileANC Canon Computer Pattern Maker FileANI Animated mouse cursorANL Project Analyzer Saved AnalysisANM DeluxPaint AnimationANN Annotation to a Windows Help (.HLP) fileANS ANSI GraphicANS ANSI TextANS MS Word Text and LayoutANSR AnswerTool FileANT SimAnt for Windows Saved Game FileAOB DVD Audio File (MPEG-2 program streams with additional info)AOF Acorn Object Format (used for data storage)AOS Nokia Add-on SoftwareAOT ZenWorks Application Binary Object Template FileAP Applix Presents FileAP Datalex EntryPoint 90 Data FileAP WHAP-Compressed Amiga ArchiveAPA AlfaPad Organizer FileAPA ArcPad 6 AppletAPC Centura Team Developer Compiled Application FileAPC Lotus Printer Driver CharactersAPD Centura Team Developer Dynamic Application Library FileAPD Lotus Printer DriverAPE Music FormatAPF Acrobat Profile FileAPF ArcPad 5 ProfileAPF Fax2000 FileAPF Homesite Project FileAPF Lotus Printer Driver FontsAPI 1st Reader Passed Parameter FileAPI Adobe Photoshop Ink Colors SetupAPI Application Program InterfaceAPI Application Program Interface file; used by Adobe AcrobatAPI Lotus Printer Driver InfoAPJ Angel Debug Monitor Project File (link is PDF file)APJ ARM Project Manager FileAPJ Music Screen Saver File (usually associated with .SCR file)APK GameSpy Arcade ServiceAPL APL Workspace FileAPL ArcPad 6 LayerAPL Centura Team Developer Application Library FileAPM ArcPad 6 FileAPO Apollo ScriptsAPP ArcPad 5 ProjectAPP Centura Team Developer Normal Mode Application FileAPP CLARION for Windows ApplicationAPP dBASE Application Object FileAPP Executable Application (under DR-DOS, NeXTstep, Atari, SymbianOS)APP Generated application or Active Document (used by MS Visual FoxPro 6, R:Base, Symphony)APR ArcView Project FileAPR Employee Appraiser Performance Review FileAPR Lotus Approach 97 FileAPS Advanced Patching Systems with Error CheckingAPS ArcPad 5 Symbology FileAPS MS Visual C++ FileAPT Centura Team Developer Text Mode Application FileAPT Lotus Approach Data View FileAPT Nimbus 7 SAMS Data File (a-priori temperature profiles)APX ArcPad 6 XML FileAPX Borland C++ Appexpert DatabaseAPX Lotus Approach Paradox-specific Information FileAQ Applix DataAR Compressed Archive File (used by MS Midtown Madness 1 & 2 games, City Add-on)ARC Archive FileARC LH ARC (old version) compressed archiveARF Automatic Response FileARH ArHymo Hydrologic SimulationARI Aristotle Audio FileARI Compressed ArchiveARJ Compressed ArchiveARK Compressed ArchiveARL AOL Organizer FileARM Armadillo Software Protection SystemARQ Compressed Archive (often on a Mac OS machine)ARR Atari Cubase ArrangementART Another Ray Tracer FormatART AOL Johnson-Grace Compressed FileART Blood ArchiveART Canon Crayola Art FileART Clip Art FileART Duke Nukem 3D ArchiveART First Publisher Raster GraphicART Xara Studio DrawingARV Arsiv FileARX Compressed ArchiveARY Compaq SmartStart Scripting Toolkit FileAS Applix SpreadsheetAS Macromedia Flash Action Script (include files when writing large scripts)AS4 AS/400 Client AccessASA Active Server DocumentASA MS Visual InterDev FileASC ASCII Text FileASC Indian Languages Document (iLeap)ASC PGP Armored Encrypted File, used by PGP (see )ASD Astound PresentationASD Lotus Screen DriverASD MS Advanced Streaming Format Description FileASD MS Word Automatic Backup (auto save)ASE Velvet Studio SampleASF APL*Plus/PC APL Shared FileASF Electronic Arts Music FileASF Lotus Screen FontASF MS Active Streaming (Media) File (contains audio and/or video compressed with 3rd party codecs)ASF Statgraphics DataASH TASM Assembler HeaderASI Borland Assembler IncludeASK askSam DatabaseASM Assembler Source Language (various)ASM Pro/Engineer Assembly fileASMX Webservices Source FileASO Assembler ObjectASO Astound Dynamite ObjectsASP Active Server Page (an HTML file containing a MS server-processed script)ASP Adobe Photoshop Photo File Index/Separation SetupASP Astound Presentation FileASP EROSION 3D Aspect FileASP Procomm Plus ASPECT Program (setup and connection script)ASPI Audio CatalystASPX Source FileASR Adobe Photoshop Scratch AreaASR MS Automap RouteAST Adobe Photoshop Separation TablesAST Astound Multimedia FileAST Claris Works Assistant FileASV Adobe Photoshop Selective ColorASV DataCAD Autosave FileASX Cheyenne Backup ScriptASX Metafile (points to an .ASF structured file)ASX MS Advanced Streaming Redirector fileASX Video FileAT2 Aldus Persuasion 2.0 Auto TemplateATF Adobe Photoshop Transfer FunctionATL Hal/Supernova/Lunar/LunarPlus Screen Readers/MagnifiersATM Adobe Type Manager Data FileATN Adobe Photoshop Action FileATO Just Burn File (audio CD burner on Compaq computers)ATR Lightscape Material LibraryATT ASCII Translation Table (-> ASCIIMEX.CXT)ATT AT&T Group 4 Bitmap (fax)ATW AnyTime Deluxe PIM FileAU Music File (various, usually Sun or UNIX)AUD Audio File used by Westwood Studios for various gamesAUP ePocrates FileAUS Calamus-module/-driver Ausschie?schema = Imposition page grouping scheme (-> IMPOS_LT module)AUT Authentication File (various)AUT AutoIt Script (automate any windows based task)AUT Descent Manager Mission FileAUT GPSMan-autoMapic File (moving-map real-time plotting)AUT Interactive Pictures iPIX FormatAUT PocketWear Car Lease Kit Vehicle Data File (Pocket PC)AUT Signwave Auto-Illustrator FileAUT TLG Workplace CD Search FileAUT Xitami Webserver Admin Password File (default.aut)AUX ChiWriter Auxilliary Dictionary FileAUX TeX/LaTeX Auxilliary Reference FileAV Final Draft AV Document FileAVA Avagio PublicationAVB Inoculan Anti-Virus Virus Infected FileAVB MS Chat Character FileAVD Avery Label Pro Data FileAVI Audio Video Interleave FileAVI MS Video for Windows video clipAVR Audio Visual Research Sound FileAVS Animation FileAVS Application Visualization System FormatAVS Stardent AVS-X ImageAVS Winamp Advanced Visualization Studio FileAVX ArcView FileAW Applix Word FileAW HP AdvanceWrite Text FileAWB Lavasoft Ad-aware Backup FileAWD Award BIOS FileAWD AWK Language Source Code FileAWD FaxViewer Document (AWD MS Fax)AWE Adobe Acrobat Bookmark XML FileAWF Qui veut gagner des millions ArchiveAWF Who wants to be a millionaire ArchiveAWK AWK ScriptAWM Animation Works MovieAWR Telsis Digital Audio FileAWS Fax signature viewerAWS StatGraphics Data FileAWX MS DirectX 8.1AX DirectShow FilterAXD Avery Label Pro Re-Index FileAXE ChordMaster (Chord Chemistry and Sequencing program for guitarists)AXE MS Autoroute Export FileAXE Paradigm C++ Integrated Debugger FileAXG MS Autoroute Trip FileAXL ArcIMS XML Project FileAXR Telsis Digital Audio FileAXS MindAvenue AXEL Stream FileAXT Adobe Photoshop Replace Color/Color RangeAXT ZenWorks snAPPshot ASCII Application Object TemplateAZ WinDVD FileAZZ AZZ Cardfile Personal Information ManagerB Go to top of pageB Applause Batch ListB Befunge ProgramB Brainf*ck Program (small programming language)B Limbo Implementation File (Inferno OS)B&W 1st Reader Mono Binary Screen ImageB&W Atari Bland and White GraphicsB_W 1st Reader Mono Binary Screen ImageB_W Atari/Mac OS Black and White GraphicB02 ADP PayrollB1J BookJonesB1N 1st Reader Binary Screen ImageB1S BookSmithB30 Ventura Publisher Printer FontB3D 3D Builder FileB3D BDE Multipath Movie Digital ViewerB4 Helix Nuts and Bolts File (Helix Software now part of McAfee)B64 Base 64 MIME-encoded FileB8 Piclab Raw Graphic FileBAC Backup FileBAD Brutus Application Definition File (password cracking)BAD Oracle BAD FileBAD Rime Mailer Address FileBAG AOL Instant Messenger FileBAG Emperor: Battle for Dune ArchiveBAG OS/2 Netfinity Manager Sysinfo File (adapter.bag)BAG PMMail Mail Index FileBAK Backup FileBAL Ballade Music ScoreBAN Sierra Print Artist BannerBAR dBase Application Generator Horizontal Menu ObjectBAS BASIC Language SourceBAS Basic ModuleBAT Batch Processing (DOS Batch File)BB Blitz Basic FileBB Papyrus Database BackupBB Starfleet Battles DOS GameBB2 XBBS-OS/2, XGROUP, AV and ZTree Archiver Control FileBBL TeX/BibTeX Bibliographic Reference FileBBM Deluxe Paint Image FileBBMA BonzibuddyBBP BitBeamer Split File (of the form .??_??.bbp)BBS Bulletin Board Sytem TextBC Sierra Print Artist Business CardBCC Calendar Creator 8 CollectionBCF ConfigSafe Snapshot IndexBCF The Sims (Maxis) 3D Body Mesh FileBCH Datalex EntryPoint 90 Data FileBCH dBase Application Generator Batch Process ObjectBCH Phoenix Software (Datalex) Entry Point 90 Data FileBCK BackupBCM MS Works Communications FileBCN Business Card Pro DesignBCO Bitstream Fontware FileBCP Borland C++ MakefileBCW Borland C++ 4.5 Environment SettingsBDB MS Works Dababase FileBDE Borland Database Engine (embedded in many different programs)BDF Backup To CD-RW Backup Definition FileBDF Egret Data FileBDF West Point Bridge Designer FileBDF X11 Bitmap Distribution FormatBDG Badge Designer 2000 Photo IDBDR MS Publisher BorderBEC Break Even CalculatorBEZ Bitstream Fontware FileBF Befunge ProgramBF Brainf*ck Program (small programming language)BF2 Bradford 2 FontBFA Blowfish-encrypted FileBFC Briefcase FileBFC Windows 95 Briefcase documentBFF AIX Backup File FormatBFFM B17 Flying Fortress Game FileBFL Colin McRae Rally 2 Data FileBFM UNIX Font Metrics FileBFX BitFax DocumentBG MS Backgammon for Windows GameBGA OS/2 Graphic ArrayBGB MS Chat Background GraphicBGI Borland Graphic InterfaceBGL Flight Simulator Scenery FileBH PowerArchiver Compressed FileBHF pcAnywhere Host FileBHTML BabuHTML Embedded Software File (example use: netMailshar)BHX Archive FileBI Binary Data FileBI Progress Database Before Image FileBIB BibliographyBIB Papyrus DatabaseBIB TeX/BibTeX Literature DatabaseBIC Civilization III ScenarioBID BidMaker 2002 FileBIF Baldur's Gate ArchiveBIF GroupWise Initialization FileBIF Image Capture Board Binary Black & White ImageBIF Planescape: Torment ArchiveBIG Chinese (old version)BIK Bink Game Video FileBIK BioCharter Profile Backup FileBIN Binary Data FileBIO BioCharter Profile FileBIO OS/2 Bios FileBIT Bitmap ImageBIT Worms World Party/Armageddon Imported MapBIZ Broderbund Print Shop Business Card FileBJF NTI Backup NOW! FileBK BackupBK JetFax Faxbook FileBK LinguAssist FileBK Sometimes used to denote backup versionsBK! BackupBK$ BackupBK$ Sometimes used to denote backup versionsBK? Backup (Can be 1 to 9, usually with WordPerfect)BKF Moto Racer ArchiveBKF Mcft/Veritas Backup FileBKF Sharp Organizer Backup FileBKG Background File (used in many games/programs)BKG UWXAFS Binary Format Data File (absorption data on an energy grid which does not need to be evenly spaced)BKI Backup IndexBKP BackupBKS An IBM BookManager Read bookshelfBKS Bookshelf BackupBKS IBM BookManager Read BookshelfBKS MS Works Spreadsheet BackupBKU Timeslips BackupBKW FontEdit Fontset Mirror ImageBLA Blat E-mail (command line E-mail tool written for Windows)BLB DreamWorks Resource ArchiveBLD BASIC Bload GraphicsBLD VersaPro Block Build InfoBLEND Blender 3D FileBLG Windows Binary Performance Log (W-2000 & W-XP have different formats)BLK Alias Wavefront ImageBLK Lightscape Block LibraryBLK VersaPro BlockBLK WordPerfect Temp FileBLL An extension used by the VBS/European-A worm.BLT Saved AIM Buddy List FileBLT Wordperfect for DOS FileBM Bitmap GraphicBM1 Apogee BioMenace Data FileBMF Image FileBMI Blue Martini Import File (eCRM)BMI Buzz InstrumentBMK An A bookmark fileBMK Help BookmarkBMP Windows or OS/2 Bitmap GraphicsBMS Backup Magic Backup SetBMW Buzz Music File with WavesBMX Buzz Music FileBMZ Demon Stalkers: Raid on Doomfane (old game)BN AdLib Instrument BankBNK Adlib Instrument BankBNK Bink Compressed Video/Audio FileBNK SimCity Game FileBNR Binary News Reader FileBNSKIN Beatnik Clock SkinBOB BobDown Downloading ProgramBOL MS Booasm Compressed Archive LibraryBOM Orcad Schematic Capture Bill of Materials FileBOM Softshare Delta Business Object ModelBOO BookBOO Compressed Archive FileBOO Image FileBOOK Adobe FrameMaker Book FileBOS Brotherhood of Steel Compressed File (renamed ZIP file; use any extractor)BOT Frogbot Editor (Frog = Quake add-on computer opponent)BOX Lemmings Revolution ArchiveBOX Notes MailboxBOX ThrottleBox Multimedia ViewerBPC BuildPro FileBPC Business Plan Toolkit ChartBPL Delphi LibraryBPS Bulletproof FTP SettingsBPS MS Works DocumentBPT Bitmap Master FileBPX Truevision Targa BitmapBQY BrioQuery FileBR Bridge ScriptBR The Playa File (link is tentative)BR3 Bryce 3D Scene File (Bryce made by MetaCreations, changed to Viewpoint, product taken over by Corel)BR4 Bryce 4 File (Bryce made by MetaCreations, changed to Viewpoint, product taken over by Corel)BRC Bryce 2 Scene File (Bryce made by MetaCreations, changed to Viewpoint, product taken over by Corel)BRD EAGLE Board FileBRI Basic Rate Interface FileBRK Brooktrout Fax-Mail FileBRO Tree Professional Broadleaf Creator FileBRP Tree Professional Broadleaf Creator ImageBRS Corel Paint Classic FileBRU Brutus Restore File (password cracking)BRW Application file associated with financial institution(s) loan applicationsBRX A file for browsing an index of multimedia options (pictures, sound, text, videos) on a CD-ROMBRX Multimedia Browsing IndexBRZ DbBRZ File (Backup or Restore)BS_ MS Bookshelf Find Menu Shell ExtensionBS1 Apogee Blake Stone Data FileBS2 Basic Stamp 2 Code File (WordPad or BS2-Editor)BSA BSARC Compressed ArchiveBSB MapInfo Sea ChartBSB SWAT Sub-basin Output File (river basin scale model)BSC Apple II Compressed ArchiveBSC Boyan ScriptBSC Fortran Pwbrmake ObjectBSC MS Developer Studio Browser FileBSC Source Browser DatabaseBSK Bryce 4 FileBSP Half-life/TFC/CS MapBSP Quake MapBST BibTeX Style FileBSV BASIC Bsave GraphicsBTM 4DOS Batch To Memory Batch FileBTM Batch file used by Norton UtilitiesBTN ButtonWare FileBTO Baytex Organix! 2001 Language KitBTR Btrieve Database FileBTR MS Frontpage-related FileBUD Quicken BackupBUF WinXL File (Datascope emulation software)BUG Bug (Problem) FileBUL Holiday Lights Screen Saver Bulb FileBUN CakeWalk Audio Bundle File (a MIDI program)BUP Backup DVD Info FileBUP Brother Embroidery System FileBUP CD IndexerBUP PC-Bibliothek Update FileBUP Softcode Tracker Contact Manager Backup (Australian software no longer sold)BUT Buttons! Button DefinitionBUY Movie Data FileBV? WordPerfect Overflow File (Can be 1 to 9)BVS BVS Solitaire CollectionBW SGI Black and White ImageBW Silicon Graphics Raw RGB FileBWB Visual Baler Spreadsheet FileBWI Blindread/BlindwriteBWR Kermit Beware Bug ListBWS Blindread/BlindwriteBWT Blindread/BlindwriteBWV Business Wave FileBXF Man's Best Friend Software Breeder Exchange FormatBYU Movie File (Shockwave)BZ Bzip UNIX Compressed FileBZ2 Bzip UNIX Compressed File (Replaces .BZ)C Go to top of pageC C Code/Program FileC Check Point Site Configuration for Secure RemoteC Desktop Color Separation Specification Cyan Layer (usually an EPS file)C UNIX Compact File AchiveC-- Sphinx C-- Source CodeC?? Winace Compressed FileC++ C++ Source CodeC00 Ventura Print FileC01 Typhoon Wave FileC08 Lord Of Destruction Game File (unverified)C2D CeQuadrat WinOnCD Image file (AKA ISO)C2D IsoBuster FileC2D WinOnCd CD ImageC3D Chem3D Chemical FileC3T Chem3D Chemical Template FileC4 JEDMICS (Joint Engineering Data Management) DoD Engineering Data FormatC4D Cinema 4D (3D Modeling texturing and animation program)C6 Ashlar-Vellum FileC86 C86 C ProgramCA DATAIR FlexPlus Data FileCA Telnet Server Initial Cache Data FileCA1 OzWin CompuServe E-mail/Forum Access Catalog FileCA4 Electronics Workbench CircuitCA7 Beta 44 Job FileCAB Install Shield v5.x or 6.x Compressed File (not compatible with MS .CAB files)CAB MS Cabinet File (program files compressed for software distribution)CAC dBase IV Executable FileCAD Softdesk Drafix CAD FileCAF Southern Company Terrestrial Data AcqCAG MS Clip Gallery Catalog FileCAL Calendar Schedule Data FileCAL CALS Compressed BitmapCAL DOS Calendar Creator FileCAL Radiance Function File FormatCAL SuperCalc WorksheetCAM Casio Camera GraphicCAN Navigator FaxCAP Compressed Music FileCAP Network Associates Sniffer Capture FileCAP Telix Session CaptureCAP Ventura CaptionCAR AtHome Assistant FileCAR Carrara EnvironmentCAS Comm008-FileFormats-a.aspelimited ASCII FileCAS i2's Case Notebook Timeline AnalysisCAT dBase CatalogCAT INSITU Library (catalog) File containing 2-D and 3-D objects (French software for office and kitchen planning)CAT OzWin CompuServe E-mail/Forum Access Catalog FileCAT Quicken IntelliCharge Categorization FileCAZ Computer Associates ArchiveCB MS Clean Boot FileCBC CubiCalc Fuzzy Logic System FileCBI IBM Mainframe Column Binary Formatted FileCBL COBOL ProgramCBM XLib Compiled BitmapCBT Computer Based TrainingCC C++ Program FileCC dB2K Custom Class FileCC Picture Window's Color Curve File (ASCII text file)CC Visual dBASE Custom Class FileCC1 Chem3D Cartesian Coordinates 1CC2 Chem3D Cartesian Coordinates 2CC5 Calendar Creator 5.x 6.x FileCCA CC:Mail Archive FileCCA Multimedia Fusion File (multimedia game creation)CCB Visual Basic Animated Button ConfigurationCCC ChatCCC Curtain Call Native Bitmap GraphicCCD CloneCd Related FileCCD Vector CAD Program FileCCE Calendar Creator 2 Event FileCCF AudioReQuest Control FileCCF Multimedia Viewer configuration file used in OS/2CCF OS/2 Multimedia Viewer Configuration FileCCF Remote Control File (various to include: ProtoProEdit, RAVedit)CCF Symphony Communications Configuration FileCCH Corel ChartCCH Fabasoft ComponentsCCL Intalk Communication Command LanguageCCM Lotus CC:Mail MailboxCCN Vitalize! Game File (Played via IE plug-in)CCO CyberChat Data FileCCO XBTX BTX Graphics FileCCP C Converter Profiles (construction site management)CCR Chat Room ShortcutCCS CONKY CeZaR Stribas InternationalCCT Logic Works Schematic FileCCT Macromedia Director Shockwave CastCCT SIL Hebrew Font System Transliteration TableCD cdTree Content ListCD1 DATAIR Cafeteria Document System Data FileCD2 DATAIR Cafeteria Document System Custom Text FileCDA CD Audio TrackCDB CardScan DatabaseCDB Clipboard FileCDB Nokia 9210/9290 Contact DatabaseCDB One Page from a ROM With a View Project FileCDB PowerDesigner Conceptual Model Backup FileCDB SymbianOS Contact Database FileCDB Turbo C DatabaseCDC Chromeleon Driver Configuration PluginCDD Chromeleon Device DriverCDD Claris Draw v 1.2 DocumentCDE Honeywell Hybrid Control Designer (HC900-x Industrial Controllers)CDF Comma Delimited FormatCDF Cyberspace Description FormatCDF InstallShield Components Definition FileCDF MS Channel Definition Format FileCDF NetCDF Graphic FileCDG DART Karaoke Studio CD+G File (contains only song lyrics and synchronization data)CDI Disc Juggler File (CD-ROM data)CDI Philips Compact Disk Interactive FormatCDJ Disc Juggler File (CD-ROM data)CDK Atari Calamus DocumentCDL CaseWare Working Papers Document LinkCDL SignLab Vector GraphicCDM PowerDesigner Conceptual Model FileCDM Visual dBASE Custom Data ModuleCDP CD/Spectrum ProCDR Corel Draw Drawing (vector graphic)CDR Raw Audio-CD DataCDR Sound FileCDS ChemDraw Stationery DocumentCDT Atari Calamus Druckertreiber = Calamus printer driverCDT Corel Draw TemplateCDX Active Server DocumentCDX ChemDraw Chemical StructureCDX Compound IndexCDX Compound index (used by MS Visual FoxPro 6)CDX Corel Draw Compressed DrawingCDX Microstation Cell Library IndexCDX MS Visual Foxpro IndexCDXL Old Amiga Movie FormatCDXML ChemDraw XML ChemDraw FormatCDZ ROM With a View Project FileCE FarSide Computer Calendar FileCE3 Calendar Creator 3.x 4.x Event ListCEF Compact Embedded FontCEG Continuous Edge GraphicCEG Tempra Show Bitmap GraphicCEL Autodesk Animator GraphicCEL CIMFast Event Language FileCEL Kiss Paper Doll FileCEL Microstation Cell LibraryCEM Empire Earth Game FileCEN Master Tracker Financial AnalysisCER Atari Calamus Exporttreiber Rastergraphik = Calamus raster-graphics export driverCER Certificate File (MIME x-x509-ca-cert)CER Sierra Print Artist CertificateCET Atari Calamus Exporttreiber Text = Calamus text export driverCEV Atari Calamus Exporttreiber Vektorgraphik = Calamus vector-graphics export driverCEV LOUT Character Encoding File (High-Level Language For Document Formatting)CEV Software License Tracking Tool (CERTAUTH.CEV)CEX INMOS Transputer Development System Occam User ProgramCEX The Currency Exchanger Rate FileCF Imake Configuration FileCF4 Catfish File Manager Support FileCFB Comptons Multimedia FileCFF Capabilities File for FOUNDATION? Fieldbus H1 (31.25 kbit/s)CFG Configuration File (various)CFH Capabilities File for FOUNDATION? Fieldbus HSE (100 Mbit/s)CFL Corel Flowchart FileCFM Cold Fusion Template FileCFM Corel FontMasterCFM Visual dBASE Windows Customer FormCFN Atari Calamus Font Data FileCFO TCU Turbo C Utilities C Form ObjectCFP Complete Fax Portable Fax FileCFR IBM Configurator Report (if you don't have the program ask the sender to export to .RTF for you)CFT Atari Calamus Farbtabelle = Calamus colour tableCFW ChemFinder FormCGA Ventura CGA Screen CharactersCGI Common Gateway Interface Script FileCGM Computer Graphics MetafileCGP NetCaptor CaptorGroupCH Clipper HeaderCH OS/2 Configuration FileCH3 Harvard Chart (Harvard Graphics taken over by Serif)CH4 Charisma 4.0 PresentationCHA Adobe PageMaker Kerning DataCHD FontChameleon Font DescriptorCHF pcAnywhere Remote Control FileCHI Chiwriter DocumentCHI Help File Index (typically used when the Help file will stay on a CD-ROM -- .CHI speeds access to the info)CHJ Help Composer ProjectCHK CHKDSK/SCANDISK OutputCHK File fragments saved by Windows Disk Defragmenter or ScanDiskCHK WordPerfect Temp FileCHL Chromeleon Channel Raw DataCHL Configuration History LogCHM ChemDraw Chemical Structure (old format)CHM Compiled HTML (Help) FileCHN Ethnograph Data FileCHP Atari Calamus HyphenationsCHP Ventura Publisher ChapterCHQ Help Combined Full-text Search File (produced when multiple .CHM files are merged)CHR Character or Font FileCHRT KChart File (KOffice format)CHT Atari Calamus Hyphenation Table = User- defined hyphenation points)CHT ChartViewer dBase Interface FileCHT Cheat Machine Data FileCHT Harvard Graphics Vector File (Harvard Graphics taken over by Serif)CIF Atari Calamus Importtreiber Font = Calamus font import driverCIF CalTech Intermediate GraphicCIF Chip Layout InformationCIF Colombo Ipermedia FileCIF Easy CD Creator ImageCIF pcAnywhere Caller FileCIF Ventura Chapter InformationCIF Ventura Converted Image FileCIL Clip Gallery Download PackageCIM CIMEX Cimpack Design Drawing FileCIM CompuApps Drive Backup ImageCIM Sim City 2000 FileCIN Cinetitler Digital Screen SubtitlingCIN OS/2 Change Control File (tracks changes to an INI file)CIP Ghost Keylogger FileCIR Atari Calamus Importtreiber Rastergraphik = Calamus raster-graphics import driverCIR PSpice FileCIR SuperMax E-CAD Save-File CommandCIS CheckInbox FileCIT Atari Calamus Importtreiber Text = Calamus text import driverCIT Intergraph Scanned ImageCIV Atari Calamus Importtreiber Vektorgraphik = Calamus vector-graphics import driverCIX TCU Turbo C Utilities Database IndexCK1 Atari Calamus Kontrollkurve 1 Linie = Calamus single control-curve (greyscale pictures)CK1 iD/Apogee Commander Keen 1 (to 6) Data File (.CK1 to .CK6)CK3 Atari Calamus Kontrollkurve 3 Linien = Calamus triple control-curve (RGB or DuoChrome)CK4 Atari Calamus Kontrollkurve 4 Linien = Calamus quadruple control-curve (CMYK or linearity)CK7 Atari Calamus Kontrollkurve 7 Linien = Calamus septuple control-curve (colour separation)CKB Borland C++ Keyboard Mapping FileCKP Ingres Checkpoint FileCKT Atari Calamus Kommando-Tasten = Calamus key bindingsCL Generic LISP Source CodeCL3 Easy CD Creator Layout FileCL4 Easy CD Creator Layout FileCL5 Easy CD Creator Layout FileCLA CLARION for DOSCLA Java Class File (usually .CLASS but can be shortened)CLASS Java Class FileCLB cdrLabel Compact Disc LabelCLB ICQ Contact ListCLB MS Office XP Developer Code LibrarianCLF ListPro FileCLG Disk Catalog DatabaseCLG Maxagrid CTM Log File (text format)CLK Corel R.A.V.E. Animation FileCLL Crick Software Clicker FileCLL OzWin CompuServe E-mail/Forum Access Custom Library SearchCLO Cloe ImageCLP Clipper 5 Compiler ScriptCLP Quattro Pro Clip ArtCLP Windows Clipboard/Picture FileCLR 1st Reader Binary Color Screen ImageCLR PhotoStyler Color DefinitionCLR WinEdit Colorization Word ListCLS C++ Class DefinitionCLS LaTeX Class File (similar to .STY)CLS Visual Basic Class ModuleCLW CLARION Database (DOS & Windows)CLW MS Visual C++ Class Wizard FileCM Craftman Data FileCM2 Curious Labs Poser Camera FileCM4 ClipMate Data FileCMA Applix TM1 Database File (text)CMA Atari Calamus MacrosCMB Chromeleon Backup ArchiveCMC PowerFront FileCMD 1st Reader External Command MenuCMD Command file for Windows NT (similar to a DOS .BAT file)CMD dBase II Program FileCMD DOS, CP/M Command FileCMD OS/2, WinNT Command FileCMF Corel MetafileCMF Creative Music FileCMG Chessmaster Saved GameCMK Card Shop Plus FileCML Cheat Machine Library File (Windows)CML COMAL program file (similar to a BASIC .BAS file)CML PADGen Company Info FileCMM CEnvi (ScriptEase:Desktop) Batch FileCMO Virtools Behavioral Server CompositionCMP Address DocumentCMP CorelDRAW PostScript Printer HeaderCMP JPEG BitmapCMP Leadview BitmapCMP MS Word for DOS User DictionaryCMP Open Access FileCMP Route 66 Address DocumentCMP SWAT3 audio compressionCMR MediaPlayer MovieCMU Carnegie Mellon Univeristy Stereo Raster ImageCMV Corel Move AnimationCMX Apple Viewer FileCMX Corel PhotoPaint ImageCMX Corel Presentation Exchange ImageCMX The Sims (Maxis) 3D Body Mesh DataCNC Click 'n Create FileCNC CNC General Program DataCND ControlDraw FileCNF Configuration File (used by Telnet, Windows, and other applications with varying internal formats)CNF SpeedDialCNM Windows Application Menu Options and Setup FileCNQ Compuworks Design Shop FileCNREG EULANDA Warenwirtschaft (ERP) Configuration InformationCNREP EULANDA ERP System Report TemplateCNS W2K Client Connection Manager Export FileCNT Windows (or other) system content files for the help index and other purposesCNV Canvas versions 6, 7, 8CNV MS Word Data Conversion FileCNV WordPerfect Temporary FileCNV WS_FTP Pro Upload Conversion File DataCOB Caligari Truespace FormatCOB COBOL Program FileCOB TrueSpace2 ObjectCOD Code ListCOD Compiler Program CodeCOD dBase Template Source FileCOD FORTRAN Compiled CodeCOD MS C compiler output as displayable machine language/assembler with original C as commentsCOD Multiplan Data FileCOD SWAT Input Control File (river basin scale model)COD Video Text FileCOL Autodesk Color PaletteCOL Lotus Notes Import Column Description FileCOL Multiplan SpreadsheetCOM Command File (MS-DOS based program)COMPAT Likely a text file (e.g., PAT)CON Knowledgeware Consolidation FileCON Simdir Configuration FileCON Tree Professional Conifer Creator FileCONF IRC Related Configuration File (IRCDs or EggDrops)CONF Linux Configuration FileCONFIG MS .NET Application Configuration InformationCOO Fabasoft ComponentsCOP Tree Professional Conifer Creator Image FileCOR Protein Structure FileCOR Web GPS Correction Server Export FileCOR WMOVIEC Input FileCOV Fax Cover Page (Win2000 Cover Page Editor)CP8 CP8 256 Gray Scale ImageCPD Complaints Desk ScriptCPD Corel PrintOffice FileCPD Fax CoversheetCPE Fax Cover documentCPE Fax CoversheetCPF Complete Fax FileCPG 3dize Cool Page FileCPH Corel Print House ImageCPI Atari Calamus Preview ImportCPI Code Page InformationCPI ColorLab ImageCPI MS-DOS code page information fileCPJ CeQuadrant CD ProjectCPL Compel PresentationCPL Control Panel Extension/ApplicationCPL Corel Color PaletteCPO Corel Print House FileCPP C++ code/programCPP CA-Cricket Presents PresentationCPR Corel Presents PresentationCPR INMOS Transputer Development System Occam Program Code FoldCPR Knowledge Access GraphicsCPS Antivirus Checksum FileCPS Central Point PC Tools BackupCPS Classroom Performance System FileCPS Colored PostScript FileCPT CA Cricket Presents TemplateCPT Corel PhotoPaint ImageCPT dBase Encrypted MemoCPT Mac OS Compressed File (Compact Pro)CPX Control Panel AppletCPX Corel Presentation Exchange Compressed DrawingCPX CryptaPix Encrypted ImageCPY Copy Books Data FileCPZ COMPOZ Music TextCR2 Curious Labs Poser Character FileCRC Atari Calamus Raster Cache (used by earlier Raster-generator PLUS)CRD Atari Calamus Raster DocumentCRD Cardfile (Windows 3.x Database)CRF Database Cross-Reference FileCRF OM2Cipher Recipient FileCRF Sierra Print Artist CraftCRF System Shock 2 ArchiveCRF Thief 2: The Metal Age ArchiveCRF Thief: The Dark Project ArchiveCRF Zortech C++ Cross-Reference FileCRG Atari Calamus Raster GraphicCRH Links Games Course FileCRH MS Golf Image FileCRI Atari Calamus Raster InformationCRL Atari Calamus Raster List (used by earlier Raster-generator PLUS)CRL Certificate Revocation ListCRP Corel Presents Run-Time PresentationCRP dBase Encrypted DatabaseCRP Visual dBASE Custom ReportCRS Gold Game Course FileCRS Links Games Course FileCRS WordPerfect 5.1 for Windows File Conversion ResourceCRT Certificate FileCRT Commodore 64 Cartridge Image (see nims.nl/C64/)CRT Oracle Terminal Settings InfoCRT UNIX Crontab File (not a required extension for Crontab)CRU CRUSH Compressed ArchiveCRW Canon Raw Format (Image) (ACDSee 4.0)CRX Links Games Course FileCRY Crypto Chat II Encrypted Notebook-contentCRZ Links Games Course FileCS C#.NET Source FileCSA Comma Deliminated TextCSA Ultimate Ride Roller CoasterCSB CircuitSoft Viewer (a module of EMSI Complete) - (Unverified)CSB Corel Photo-Paint ScriptCSC Corel ScriptCSD Bitstream Fontware FileCSD Chemsoft MSDS Database FileCSE Atari Calamus Seite = Calamus pageCSF Van Dyke's CRT/SecureCRT Script FileCSG Statistica Graph FileCSH Hamilton Labs C Shell Script FileCSI Cyberautograph Signed ItemCSK Claris WorksCSL Atari Calamus Textstyle ListCSM Borland C++ 4.5 Precompiled HeaderCSM Borland C++ Symbol FileCSM Kodak DC265 Camera ScriptCSP CaseWare Working Papers Script PageCSP PC Emcee On-Screen ImageCSQ Foxpro QueriesCSS Atari Calamus Stammseite = Calamus master pageCSS Hypertext Cascading Style Sheet FileCSS Statistica DatasheetCSS Stats+ DatafileCST Macromedia Director Cast FileCSV Comma-Separated Variables (Data File)CSV CompuShow Adjusted EGA/VGA PaletteCT A graphic file associated with the Paint Shop Pro Graphic EditorCT Scitex CT Handshake BitmapCT0 Maxagrid CTM File Being Processed (text format)CT1 Maxagrid CTM File Successfully Processed (text format)CT2 Maxagrid CTM File Unsuccessfully Processed (text format)CTC PC Installer ControlCTD Atari Calamus Text DocumentCTD Cardtable File (text file)CTD Cobra Track Dump (COmBined Reconstruction for Atlas)CTD Marine Data File (e.g., automatic float data)CTD Simpsons Cartoon Studio Export FileCTF MGI PhotoSuite 1.0/8.0 Album FileCTF Symphony Character Code TranslationCTF TIFF Compressed FileCTF WhereIsIt CatalogCTG Canon Powershot Pro 70 Info FileCTG Cartridge Definition FileCTG ChessBase Opening BookCTL Used in general to mean a file containing control information (FAXWorks uses it to keep information about each fax sent and received)CTM Content Delivery ServiceCTM Crazytalk Talking Animation FileCTM FreeBSD Content Management FileCTM Java Charge Transaction Matrix FileCTM Maxagrid CTM File (text format)CTM SDR99 Speech Recognition Task Time Marked Conversation InputCTP American Greetings Greeting CardsCTP ChemDraw TemplateCTT Atari CalamusDCT Dictionary (various)DCT MS Visual Foxpro Database ContainerDCU Delphi Compiled UnitDCV DriveCrypt VolumeDCX Bitmap GraphicsDCX Database index (used by MS Visual FoxPro 6)DCX ElectraSoft FaxDCX FAX ImageDCX Fax image (based on PCX)DCX MacrosDCX MS Visual Foxpro Database ContainerDCX PC-Paintbrush FileDD Mac OS Compressed Disk Doubler ArchiveDDATA Pocket Diary Text FileDDB Design Database File (database definition file, possibly MS Access)DDB Device-Dependent Bitmap Graphics FileDDB INMOS Transputer Development System Occam Debugging InfoDDB Protel 99SE Design Database FileDDE Dynamic Data ExchangeDDF Bitstream Fontware FileDDF BTRIEVE Data Dictionary File (allows other programs to access data)DDF Doom Definition FileDDF Music Library FileDDI Disk Doubler ImageDDI DiskDupe ImageDDL MS Data Definition Language File (SQL Server Query Analyzer)DDP Delphi 6 FileDDP OS/2 Device Driver Profile FileDDS Adobe Photoshop Compressed TexturesDDS INMOS Transputer Development System Occam Compiler DescriptorDDW CSPro File (combined IMPS and ISSA Census Processing System)DDX Juno "Get" FileDEB Debian Linux PackageDEB DOS Debug ScriptDEC VersaPro Declaration FileDEF 3D Fassade Plus Define Module FileDEF C++ DefinitionDEF DefaultsDEF DefinitionsDEF Geoworks Assembly Header FileDEF Modula-2 Definition Module FileDEF SGML Tag DefinitionDEF SmartWare II Data FileDEI Gerber Design Engineered InterfaceDEL DataDEM Descent DemonstrationDEM USGS MapDEP Dependency File (created by the Setup Wizard, used by MS Visual FoxPro 6)DEPLOY DeployMaster Setup ScriptDER Certificate FileDES Description TextDES Pro/DESKTOP FileDES Quickbooks TemplateDES Tribes 2 Game FileDESK Card Deck FileDEV Device DriverDEV Device Independent TeXDEV LaTeX FileDEZ DES Encrypted Zip FileDF Lightscape ParametersDF1 Omnis7 and Omnis Studio Database File (also .DF2, .DF3, etc.)DFC Voicemail File (Trio Voice Communications and maybe others)DFD File Flow Diagram GraphicDFI Digifont Outline Font DescriptionDFL Signature Default Program SettingsDFM Delphi FormsDFM File Flow Diagram ModelDFP Digital Fusion Plug-inDFP Stabilogram Diffusion Analysis File (Requires MatLab)DFS Delight Sound FileDFT Fakt2000 FileDFT SolidEdge CAD FileDFT Workshare Synergy FileDFV Word Print Format TemplateDG Autotrol GraphicsDGC TurboTax-related FileDGN Dragon 32 EmulatorDGN Intergraph GraphicsDGN Microstation95 CAD Drawing FileDGO Dimitrius Settings File (Dimitrius is program author)DGR DART Pro 98 File Group DetailsDGR Fax Page (MS Outlook Express)DGS AT Advanced Diagnostics FileDH Geoworks Dependency Information FileDHP Dr. Halo PICDHT Gauss Data FileDHTML Dynamic Hypertext Mark-up Language documentDIA Computer Support Corp Diagraph Graphics FileDIB Device-Independent Bitmap GraphicDIC Dictionary (various)DIF Data Interchange Format spreadsheetDIF DIFF Command Output (patch script)DIG Digilink FormatDIG Sound Designer Audio FileDIG Text DocumentDIN ADC Labs eWave File (broadcast automation software)DIN DataEase FileDIP Graphics FileDIR DEC VAX DirectoryDIR Macromedia Director FileDIR Procomm Plus Dialing DirectoryDIR Worms Armageddon ArchiveDIS Corel Draw ThesaurusDIS DATAIR Data Import Specification Layout FileDIS Ray Tracer FileDIS VAX Mail Distribution FileDIT MS Win2000 Active Directory SchemaDIVX Movie Encoded with DivX-codecDIZ Description In Zip FileDJV DjVu FileDJVU DjVu FileDJVU Document format from LizardTech, Inc. (see solutions/document/)DKB DKBTrace Ray-Traced Graphics FileDL Animation FileDLC Echelon HQ Configuration FileDLC Model Dislocation FileDLD Lotus FileDLG C++ Dialogue ScriptDLG Dialog Resource ScriptDLG Digital Line Graph (U.S. Geological Survey geographic database)DLG Infinity Engine Game Dialog FileDLK INMOS Transputer Development System Occam Compiler Link InfoDLL CorelDraw Export/Import FilterDLL Windows Dynamic Link LibraryDLM Dirty Little Helper Cheat FileDLS ADAPTA DLS/32 Supply Chain Planning (ASCII file with general number data)DLS Downloadable Sounds (Interactive Music Architecture)DLS Norton DiskLock Setup FileDLU Dirty Little Helper Update FileDM_48 Quake 3 Arena Demo FileDM_57 Return to Castle Wolfenstein Demo FileDM_66 Quake 3 Arena Demo FileDM_67 Quake 3 Arena Demo FileDM2 Quake 2 Demo FileDM3 Quake 3 Arena Demo FileDMC Medical Manager DML System Compiled ScriptDMD dB2K/dQuery Web DataModuleDMD OS/2 Warp Device Manager DriverDMD Visual dBASE Data ModuleDME Medical Manager DML System Data MergeDMF Delusion/XTracker Digital Music FileDMF Packed Amiga Disk ImageDMF X-Trakker music module (MOD) fileDMG Mac OS X Disk Image File (Treated like a real disk)DML Darn! Shopping! Mall FileDML Medical Manager DML System ScriptDMO Derive DemoDMP Dump (various)DMP INMOS Transputer Development System Occam Core DumpDMS Compressed ArchiveDMX Medical Manager DML System Index for Custom .DME FilesDMX ProTrader DatabaseDN8 Blue Martini UTF-8 Encoded DNA File (eCRM)DNA Blue Martini DNA File (eCRM)DNA.XML Blue Martini XDNA File (eCRM)DNC Machine Tool CommunicationsDNE Darn v5+ (Windows) Events ListDNI realMyst 3D ArchiveDNL DigitalWebBook Electronic Book (requires installation of DigitalWebBook plug-in)DNS DynSite Plug-in FileDO Stata Batch Analysis FileDOB User Document Form FileDOC Adobe FrameMaker or FrameBuilder documentDOC DisplayWrite 4 FileDOC Document or Documentation (many programs/formats)DOC MS Word DocumentDOC WordPad documentDOC WordPerfect documentDOC WordStar documentDOCHTML MS Word HTML DocumentDOCMHTML MS Word HTML DocumentDOG Laughing Dog Screen SaverDOH Geoworks Dependency Information FileDOS 1st Reader External Command FileDOS MS-DOS based file (also extension for NDIS2 net card and protocol drivers)DOS Network Driver FileDOS Text File/DOS Specification InfoDOT Corel Lines-DefinitionDOT MS Word Document TemplateDOTHTML MS Word HTML Document TemplateDOX MultiMate DocumentDOX Text FileDOX User Document Binary Form FileDOZ VENDINFO Description Out of Zip FileDP Daily Planner Calendar FileDP DataPhile Data FileDPA Serif DrawPlus AnimationDPC Delphi Package Collection FileDPC DiscPlay Collection FileDPJ DeskProto CAM Project FileDPK Delphi Package FileDPL Borland Delphi 3 Packed LibraryDPL Digital Photo Librarian DatabaseDPP Serif DrawPlus DrawingDPR Borland C++ (or Delphi) Default Project (header file)DPS DivX XP Skin (.ZIP file format)DPT Publish-It! Publication FileDPX Digital Moving Picture ExchangeDPY Realpolitik Saved GameDQA itaz doQument FileDQD itaz Default doQument DatabaseDQY MS Excel ODBC Query FileDR9 Directory FileDRC Borland Delphi Compiled Resource FileDRC DriveCrypt Container File (Note: This extension was changed to .DCV due to a WinXP conflict.)DRC Orcad Schematic Capture Design Rules Check Report FileDRES Diagnosis ResultsDRJ Deraj Data FileDRL DocObject Resource LocatorDRM Steinberg Cubase Drum FileDRN Darn for DOSDRS Age of Empires 2 ArchiveDRS WordPerfect Driver ResourceDRV Device DriverDRW Drawing (various)DRW Micrografx Designer/DrawDRW Micrografx Vector GraphicDRW Pro/Engineer Drawing FileDRX Adobe Photoshop TutorialDS Chemisty SoftwareDS PhotoMax DriveDS4 Micrografx Designer Graphics (ver 4)DSA DasyTec DASYLab FileDSB DasyTec DASYLab FileDSC Nikon Coolpix Disk Identification FileDSC Oracle Discard FileDSCE Diagnosis ScenarioDSD DataShaper Database FileDSD Document Structure Definition FileDSES Diagnosis SessionDSF Delusion/XTracker Digital SampleDSF Micrografx DesignerDSF PC-TRUST Document Signer (Extension means file is signed)DSG Doom Saved GameDSH Dashboard PDA WallpaperDSK Borland C++ or Turbo Pascal Project Desktop FileDSK Novell Driver FileDSL Lingvo User Feature DictionaryDSM Delphi Symbol FileDSM Digital Sound Module Tracker FormatDSM Dynamic Studio Music Module (MOD) FileDSN Object System Designer DesignDSN ODBC Data SourceDSN Orcad Schematic Capture Schematic FileDSN SureThing Office Labeler (formerly DesignExpress) DocumentDSP Dr. Halo Graphic Screen DriverDSP MS Developer Studio ProjectDSP Signature Display ParametersDSQ Corel QUERY FileDSR Active Designer FileDSR WordPerfect DriverDSS DCC Active Designer FileDSS Digital Soup Digital Sound FileDSS Digital Speech Standard File (Voice Recorders & IBM's ViaVoice)DST Embroidery Machine Stitch FileDST PC-RDist Distribution FileDSW Borland C++ Desktop SettingsDSW MS Developer Studio WorkspaceDSX Active Designer Binary FileDSZ Embroidery Machine Stitch FileDT_ Mac OS Data File ForkDTA Data (Various)DTA Hidden & Dangerous ArchiveDTA Stata Binary Saved DatasetsDTD Document Type Definition of SGML and XMLDTEA Diagnosis Template ArchiveDTF MS Exchange Header File (Used when sending to Lotus Notes)DTF Q&A DatabaseDTL Hal/Supernova/Lunar/LunarPlus Screen Readers/MagnifiersDTM DigiTrekker ModuleDTM Softshare Delta Translation MapDTP Pressworks Template FileDTP Publish-It! PublicationDTP SecurDesk! DesktopDTP Timeworks Publisher Text DocumentDTQ Database Tools QueryDTX DocuTech Print6 Engine File (Prints DocuTech Closing Documents)DTX E-Book FileDTX LaTeX Source and Documentation ArchiveDTX LithTech Model Texture FileDUN Dial-Up NetworkDUN MS Dial-up Networking Export fileDUP Duplicate BackupDUS Readiris Font DictionaryDV DESQview ScriptDV Digital Video File (MIME)DVC Lotus FileDVF DV Studio Camcorder Graphics FileDVI TeX Device Independent DocumentDVI Used to visualize TeX/LaTeX files with XdviDVP AutoCAD Device ParameterDVP DESQview Program InformationDVR Device DriverDW2 DesignCAD Drawing FileDWC Compressed ArchiveDWD DiamondWare Digitized FileDWF Autodesk WHIP! Drawing Web FileDWF MS WHIP autoCAD Reader Drawing Web FileDWG AutoCAD Drawing Database, or older Generic CADD drawing formatDWG Drafix DrawingDWI Dance With Intensity (dance simulator)DWK Locked DWG FileDWP DeScribe Document FileDWP Dweep Game LevelsDWS AutoCAD Standartization FileDWS Dyadic Workspace FileDWT AutoCAD Template/Prototype FileDWT Demon's World Game Texture FileDWT Macromedia Dreamweaver Template FileDWY Dwyco Video ClipDX Digital Electric Corporation (DEC) Data Exchange FileDX Document Imaging FileDXB Drawing Interchange BinaryDXF AutoCAD Drawing Interchange FormatDXF Drawing Interchange (eXchange) format,a text representation of the binary DWG formatDXL Dapyx MP3 Explorer (MP3 database organizer)DXL DOORS Extension LanguageDXMAX Oozic FileDXN Fujitsu dexNet Fax DocumentDXPACK DesktopX Object (customizes the Windows Desktop)DXR Dependable Strengths Administrator Resources (Mac OS)DXR Green Building Advisor FileDXR Macromedia Director Protected Movie FileDXTHEME DesktopX Theme File (customizes the Windows Desktop)DYN Lotus FileE Specman Testbench E-program Source FileE00 ArcInfo Coverage Export FileE01 Encase Forensic SoftwareE2 thinkdesign CAD DesignE3 thinkdesign CAD DesignEAC EmEditor Auto Completion FileEAF Aframe File (suite of generic testing and assessment software)EAF FRAGSTATS*ARC File (Landscape Structure/Spatial Pattern Analysis for ARC/INFO)EAF MicroEmacs Abbreviation File FormatEAL Enfocus Action ListEAR Java Enterprise Application Packaging UnitEAZ Express Assist FileEBJ Geoworks Error Checking Object FileEBO MS Reader Ebook FormatEBS WindowsXP Scanner FileEBX Electronic Book Exchange (Open Source)ECC Ecchi Role-playing Format (Generally X-rated Anime File)ECF WinFax Office Add-in FileECO NetManage ECCO FileECS Encrypted Compressed GIS Software Geographic Shape FileECW EclipseCrossword Crossword PuzzleECW Ensoniq Waveset FormatECW2002PUZZLE EclipseCrossword PuzzleECW2002WORDS EclipseCrossword Word ListED EasyDraw CAD File (Japanese CAD program)ED5 EDMICS Graphics FileED6 EDMICS Graphics FileEDA Ensoniq ASR Disk ImageEDB MS Exchange database filesEDB ROOTS3 Geneological DataEDC Kryptel (light) Decoder/EncoderEDD Adobe FrameMaker Element Definition DocumentEDE Ensoniq EPS Disk ImageEDF Workshare Synergy Document Change ManagementEDK Ensoniq KT Disk ImageEDL Edit Decision List (management for video and film post production)EDP Attachmate Extra! SessionEDQ Ensoniq SQ1/SQ2/KS32 Disk ImageEDS Ensoniq SQ80 Disk ImageEDT VAX Edt Default SettingsEDV Ensoniq VFX-SD Disk ImageEEB WordPerfect Equation Editor Button BarEFA Ensoniq ASR FileEFDEMO Star Trek Voyager Elite Force Demo FileEFE Ensoniq EPS FileEFF EverQuest Effects FileEFF IEEP TeamBG File (modify Infinity Engine games)EFK Ensoniq KT FileEFQ Ensoniq SQ1/SQ2/KS32 FileEFS Ensoniq SQ80 FileEFT Chiwriter High Res Screen CharactersEFV Ensoniq VFX-SD FileEFX Fax Document (Used to be JetFax in 1999)EGA Ventura EGA Screen CharactersEGD GIS Software Encrypted Grid Shape FileEGS GIS Software Encrypted Grid Shape FileEID Faena MyID Encrypted FileEID IBM ViaVoice Vocabulary FileEK5 Simrad EK500 Scientific Echosounder DataEK6 Simrad EK60 Scientific Echosounder DataEKM EXP: The Scientific Word Processor MacroEL eMacs Lisp Source CodeELC eMacs Lisp Byte-compiled Source CodeELETTERHEAD Electronic LetterheadELF Black Belt Systems Extended Layer FileELF Tasklink for Windows Machine Control Executable and Linking FormatELI Encyclopedia Article ListELM MS FrontPage Theme-Pack FileELT Event List TextEMAIL MS Outlook Express Mail MessageEMB Everest Embedded Bank FileEMB IEMBL Nucleotide Format (MIME type chemical/x-embl-dl-nucleotide)EMBL IEMBL Nucleotide Format (MIME type chemical/x-embl-dl-nucleotide)EMD ABT Extended ModuleEMF Enhanced/Extended Windows Metafile FormatEML MS Outlook Express Electronic Mail Message (MIME RFC 822)EMR Emrite (Wordprocessor file)EMS PC Tools Enhanced Menu System ConfigEMU EmulationEMX Enigmacross Puzzle FileEMY Ericsson RingtoneENC BlackIce Evidence Log FileENC Encore Music FileENC Knowledgeware EncyclopediaENC UUENCODE Encoded FileENC Video FileEND Corel Arrow DefinitionENF EndNote Filter FileENF RCEncrypt FileENG DictionaryENG EnerGrahics Chart Graphics FileENG Sprint Dictionary Engine FileENL EndNote Library File (for research papers)ENR Enroute ToolathENS EndNote Styles FileENT Entrust Entelligence Secured FileENV Sierra Print Artist EnvelopeENV WOPR Enveloper MacroENV WordPerfect EnvironmentENW Sierra LandDesigner 3D Terrain ModelingENZ EndNote Connection FileEOT MS WEFT Embedded OpenType FileEP2 EclipsePackager PackageEPD Express Publisher Publication FileEPI EclipsePackager InvoiceEPI Express Publisher Document FileEPL Tallyman E-commerce Software?EPP EditPad Pro ProjectEPR Eiffel Project RepositoryEPS Encapsulated PostScript Image FileEPS Ventura Printer FontEQL DART Pro 98 Fabric Equalization PresetsEQN WordPerfect EquationER1 ERWin FileERD Entity Relationship DiagramERM Entity Relationship Diagram ModelERP British Economics & Social Research Council Electronic FormERR Compilation error (used by MS Visual FoxPro 6)ERR Error Log (various)ERX ERWin FileES Atari Calamus-module/-driver Eddie Setup (-> Eddie)ES EasySIGN Drawing SheetESF Emblaze Audio FileESH Extended Shell Batch FileESI Esri Plot FileESL MS Visual FoxPro Distributable Support LibraryESP Ventura FileESS EXP: The Scientific Word Processor Style SheetEST MS Streets & Trips 2001 Trip FileESY EmEditor Syntax FileETA eTreppid Audio File (eTplayer & ETVC media CODEC)ETC eTreppid Compressed FileETH Ethnograph Document FileETM eTreppid Audio File (eTplayer & ETVC media CODEC)ETV eTreppid Audio File (eTplayer & ETVC media CODEC)ETX SetText Structure Enhanced TextEUC Japanese (Kanji)EUI Ensoniq EPS Family Compacted Disk ImageEV EchoView File (sonar fishing data)EV2 Java FileEV3 EVERLOCK Options FileEVA Viz Modeler 3D Scene Archive (used for TV graphics)EVB Embedded Visual Basic File (used on Pocket PCs)EVC EchoView Color Scheme (Echo color-created data)EVI Echo ................
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