File Types

These extensions at the end of a filename refer to the type of file it is. This information is used by your operating system to launch an appropriate program when you click on the filename. Example: file.txt is a text file and can be opened by a text editor program.

File Extension

File Description

.$$$

Temporary file

.2GR

A file that allows Windows to display text and graphics in standard mode on a 286 or 386 computer (filename extension).

0.386

Swap file; enables computer running in enhanced mode to use Windows with virtual memory (filename extension).

.3GR

A file that allows Windows to display text and graphics in enhanced mode on a 386, 486, or Pentium computer (filename extension).

0.906

Calcomp plotter

.A3W

MacroMedia Authorware Windows 3.5 (filename extension).

.ABK

AutoBackup, Corel Draw (filename extension).

.ABR

Brush - Adobe Photoshop (filename extension).

.ACL

Keyboard accelerator, Corel Draw 6 (filename extension).

.ACM

Windows system directory file (filename extension).

.ACV

Drivers for compressing or decompressing audio files, OS/2 (filename extension).

.AD

After Dark

.ADB

1. Appointment DataBase, HP 100LX (filename extension). 2. Body file type, Ada language (filename extension).

.ADD

Adapter Driver - OS/2 (filename extension).

.ADM

AfterDark MultiModule (filename extension).

.ADR

AfterDark Randomizer (filename extension). AfterDark is a screensaver program that can be set to randomly display a variety of screensaver patterns one after another.

.ADS

Specification file type, Ada language (filename extension).

.AFM

Adobe Font Metrics - Type 1 font metrics (filename extension).

.AG4

Access G4

.AI

Adobe Illustrator

.AIF

Audio Interchange File Format or AIFF (filename extension). A format developed by Apple Computer for storing high-quality sampled audio and musical instrument information. It can be played on PC and Mac.

.aiff

Audio Interchange File Format. An uncompressed sound format developed by Apple Computer for storing high-quality sampled audio and musical instrument information. It can be played on PC and Mac, using QuickTime or Sound Player.

.ALL

Arts and Letters Library (filename extension).

.ANI

Animated cursor (filename extension).

.ANS

ANSI text (filename extension).

.API

Application Program Interface (filename extension). An interface between the operating system and application programs.

.APP

MacroMedia Authorware package (filename extension).

.ARC

ARC or ARC+ compressed

.arj

A PC compressed format found on European sites (filename extension), which can be decoded with unArjMac, DeArj, and SITEX10.EXE (win).

.ART

An art file, in some draw or paint applications (filename extension).

.ASC

ASCII text file

.ASF

Active Streaming File - HoTMetaL Pro (filename extension).

.ASM

Assembly Source Code

.ASP

Active Server Page - Microsoft (filename extension).

.AST

Assistant file - Claris Works (filename extension). Assistants guide the user through a task by asking a series of questions and then use the answers to perform a task. Assistants in Claris Works can be used to create such useful items as calendars, newsletters, stationery, labels, and address lists, to make footnotes within a file, to find documents, etc.

.ATT

AT&T

.AU

A sound file format used on Sun Microsystems or other UNIX computers

.AVI

AVI movie format

.AVS

Intel video capture format (filename extension).

.b64

Base 64 (filename extension), the encoding format used by the Multipurpose Internet Mail Extension.

.BAK

Backup copy in DOS or OS/2

.BAS

BASIC program file

.BAT

Batch

.BFC

Briefcase document - Windows 95 (filename extension).

.BG

Backgammon game (filename extension).

.BI

Binary file (filename extension).

.BIN

Driver

.bin

A MacBinary II encoded file (filename extension). This file type, downloaded as MacBinary or Binary, can be decompressed with Stuffit Expander.

.BK

Backup copy

.BK$

Backup file (filename extension).

.BLT

Wordperfect for DOS (filename extension).

.BMP

Bitmap

.BNK

Sim City game file (filename extension).

.BRX

Browse Index (filename extension). Found on multimedia CD-ROMs.

.BTM

Batch file - Norton Utilities (filename extension).

.C

C program file

.CAB

Microsoft compressed format

.CAL

Calendar or CALS

.CAP

Caption

.CBT

Computer-Based Training; a tutorial file (filename extension).

.CCH

Corel chart (filename extension).

.CCM

Lotus cc:Mail (filename extension).

.CDA

CD Audio track (filename extension).

.CDR

CorelDraw

.CDT

Corel Draw template (filename extension).

.CDX

Corel Draw compressed file (file extension).

.CDX

Visual FoxPro database index (filename extension).

.CFB

Compton’s multimedia encyclopedia (filename extension).

.CFG

Configuration

.CFL

Corel Flow (filename extension).

.CGI

Common Gateway Interface (filename extension). A file that makes it possible for HTTP servers to interface with computer programs to provide interactive functions like fill-out forms.

.CGM

CGM graphics

.CHK

Checkdisk - DOS

.CHP

Chapter - Ventura

.CIF

Chapter Information - Venture

.CIM

Sim City file (filename extension).

.CIT

Intergraph scanned image

.CLP

Clipboard

.CMD

Command file -- OS/2

.CMF

Corel MetaFile (filename extension).

.CMF

SoundBlaster file (filename extension).

.CMP

LEAD Technologies graphics

.CMV

Corel Move animation (filename extension).

.CNF

Configuration file (filename extension).

.CNQ

Compuworks Design Shop (filename extension).

.COB

COBOL source code

.COM

Command file - small version of .EXE

.CPE

Fax Cover document (filename extension).

.CPI

Code Page - DOS

.CPL

Control Panel - Windows

.CPP

C++ program file

.CPR

Knowledge Access graphics

.CPT

Compact Pro

.CPX

Corel Presentation Exchange compressed file (filename extension).

.CRD

Windows Cardfile (filename extension).

.CSC

Corel Script (filename extension).

.CSS

Cascading Style Sheet (filename extension).

.CSV

Comma delimited

.CTL

Control file (filename extension).

.CTY

City file - SimCity (filename extension).

.CUR

Windows cursor image

.CUT

Dr. Halo graphics

.CV

Microsoft CodeView (filename extension).

.CWK

Claris Works (filename extension).

.CWS

Claris Works template (filename extension).

.DAT

Data

.DB

Table - Paradox

.DBC

Visual FoxPro database (filename extension).

.DBF

Database File - dBASE

.DBT

Database text - dBASE

.DBX

DATABEAM graphics

.DCA

IBM text

.DCS

Color Separation - EPS

.DCT

Dictionary

.DD

Disk Doubler

.DDI

Disk Doubler Image (filename extension).

.DEF

Definition - C++ (filename extension).

.DER

Certificate (filename extension).

.DEV

Device driver file (filename extension).

.DG

Autotrol graphics

.DGN

Intergraph graphics

.DIB

DIB graphics - Windows

.DIC

Dictionary

.DIF

Data Interchange Format spreadsheet

.DLL

Dynamic link library

.DOC

Document file

.DOT

Document Template - Microsoft Word (filename extension).

.DOX

MultiMate document

.DPI

Dots Per Inch - graphics

.DPR

Delphi project file (filename extension).

.DRV

Driver

.DRW

Designer graphics

.DS4

Designer graphics, version 4

.DSF

Designer graphics, version 6

.DWG

AutoCAD vector format

.DWG

Drawing - AutoCAD (filename extension).

.DX

Document Imaging

.DXF

AutoCAD vector format

.ED5

EDMICS graphics

.EMF

Enhanced Windows Metafile (filename extension).

.eml

electronic mail

.enc

encoded

.EPS

Encapsulated PostScript format

.ESI

Esri plot file

.EXE

Executable file -- machine code

.FAX

Fax

.FDX

Force Index

.FH3

Aldus Freehand 3 (filename extension).

.FLC

AutoDesk animation

.FLD

Thumbnail folder - Hijaak

.FLI

AutoDesk animation

.FLR

Live3D (filename extension).

.FLT

Filter - graphics conversion

.FM

Framemaker (filename extension).

.FM3

Format for 1-2-3 Version 3

.FMT

Format - dBASE

.FNT

Font

.FOG

Fontographer font (filename extension).

.FON

1. Bitmapped Font - Windows 2. Phone

.FOR

FORTRAN

.FOT

Windows TrueType font

.FOX

FoxBase

.FP

Claris FileMaker Pro (filename extension).

.FP1

Flying Pigs (filename extension).

.FP3

Filemaker Pro 3

.FPX

FlashPix bitmap (filename extension).

.FRM

Form design -- Visual Basic

.FRS

WordPerfect Graphics Driver

.G4

GTX RasterCAD

.GCA

GOCA graphics

.GED

Arts & Letters graphics

.GEM

GEM graphics

.GEO

VideoScope (filename extension).

.GIF

Graphics Interchange Format

.GLY

Glossary

.GP3

CCITT compressed Group 3 TIFF file (filename extension).

.GP4

Group 4 - CALS, ITU (filename extension). CCITT compressed Group 4 TIFF file.

.GRA

Microsoft Graph (filename extension).

.GRF

Graph

.GRP

Group

.GX1

Show Partner graphics

.GX2

Show Partner graphics

.GZ

GNU gzip compressed file - Unix

.H

Header (filename extension -- C).

.HDF

Hierarchical Data File

.HED

HighEdit document (filename extension).

.HEL

Microsoft Hellbender game file (filename extension).

.HGL

HP Graphics Language (filename extension).

.HLP

Help

.HPJ

Help Project - Visual Basic (filename extension).

.HPL

HP Graphics

.HQX

BinHex (filename extension -- Macintosh).

.HST

Host

.HT

HyperTerminal (filename extension).

.htm

DOS filename extension for a document with HTML coding, which can be read by WWW browsers.

.html

Filename extension for a document with HTML coding, which can be read by WWW browsers.

.HWP

Hangul Word Processor (filename extension).

.HYC

Hyphenation - WordPerfect

.HYP

Hyphenation

.ICA

IOCA graphics

.ICB

Targa bitmap (filename extension).

.ICM

Image Colour Matching (filename extension).

.ICO

Icon - Windows or OS/2

.ICON

Sun icon and cursor

.IDD

Instrument Definition - MIDI (filename extension).

.IDE

Integrated Development Environment configuration (filename extension)

.IDX

Index

.IFF

Amiga

.IGF

Inset Systems graphics - Hijaak

.IIF

Interchange File - QuickBooks for Windows (filename extension).

.IL

Icon Library

.ima

Winimage compressed format These files can be decoded or mounted by ShrinkWrap.

.image

Mac disk image (filename extension); a compressed format which can be decoded or mounted by DiskCopy, Disk Image Mounter, Disk Charmer, and ShrinkWrap (ImageMaster).

.IMG

Image. This file is a Macintosh Disk Image. Disk Copy can be used to mount the disk image on the Macintosh desktop. The mounted disk image will behave like a read-only disk.

.IND

Index

.INF

Information

.INI

Initialization - configuration settings

.IOB

Imagine file (filename extension).

.ISU

Netscape file (filename extension).

.IT

MOD music file format (filename extension).

.IW

Idlewild screensaver (filename extension).

.IX

Index File - Framemaker (filename extension).

.JFF or .JFIF

JPEG File Interchange Format; a 24-bit graphic format. It can be opened with QuickTime, a WWW browser, or a graphics viewer such as JPEGView.

.JIF

JPEG Image Format (filename extension).

.JPEG

JPEG bitmap (filename extension).

.JPG

file extension for JPEG (Joint Photographic Experts Group). A file stored in JPEG format. JPEG,an ISO/ITU standard for storing images with high compression capability, uses a discreet cosine transform that can achieve compression rates of 100:1 (significant loss of data from original) and 20:1 (minimal loss). C-Cube Microsystems introduced the first JPEG chip.

.JT

JT Fax

.JTF

JPEG bitmap (filename extension).

.KDC

Kodak Photo-Enhancer (filename extension).

.KFX

Kofax

.LBL

Label - dBASE

.LBM

Deluxe Paint graphics file

.LDB

Lock file - Microsoft Access (filename extension).

.LEG

Legacy document (filename extension).

.lha

Filename extension for a PC/Amiga compression format decodable by LHA Expander or MacLHA.

.lhs

Literate Haskell source file

.lhz

LHA compression file

.LIB

Library

.LIC

License file - shareware (filename extension).

.LOG

Log

.LST

List (filename extension).

.LWP

Lotus Word Pro document (filename extension).

.LZH

LHARC compression

.lzs

PC/Amiga compression format

.M3D

Motion 3D - Corel (filename extension).

.MAC

MacPaint

.MAF

Microsoft Access Form (filename extension).

.MAK

Makefile

.MAM

Microsoft Access Macro (filename extension).

.MAP

Map - linkage editor

.MAQ

Microsoft Access Query (filename extension).

.MAR

Microsoft Access Report (filename extension).

.MAT

Microsoft Access Table (filename extension).

.MCS

MathCAD format

.MCW

Microsoft Word for Macintosh (filename extension).

.MDB

Access database

.MDX

Multi-index

.MET

Metafile - OS/2

.MEU

Menu

.MFF

MIDI File Format (filename extension).

.MGF

Micrografx Draw Font (filename extension).

.MI

Miscellaneous (filename extension).

.MIC

Microsoft Image Composer (filename extension).

.MID

MIDI

.MIFF

An ImageMagick file format

.MIL

Group 4

.mime

MIME (filename extension); the encoding format used by the Multipurpose Internet Mail Extension.

.MME

Mime encoded file (filename extension); the encoding format used by the Multipurpose Internet Mail Extension.

.MMF

Microsoft Mail File (filename extension).

.MMM

Macromind animation

.MOD

(For module). A music file format that contains digitized sound samples A .MOD file takes more memory than a MIDI file because a MIDI file contains instructions for making sounds but not the actual sound samples. There are .MOD players for Amiga, PC, and Macintosh computers.

.moov

QuickTime movie. This file can be viewed with QuickTime Player.

.MOV

Movie - QuickTime

.movie

QuickTime movie. This file can be viewed with QuickTime Player.

.MOZ

Mozilla - Netscape cache file (filename extension).

.mp2

MPEG Layer II compressed audio. This file can be played using QuickTime Player and some other sound players.

.mp3

MPEG Layer III compressed audio. This file can be played with QuickTime Player, Real Player, and some other sound players.

.MPE

MPEG (filename extension).

.MPEG

MPEG movie or animation file. This file can be played with QuickTime Player.

.MPG

MPEG encoded file. This file is an MPEG movie, and can be played with QuickTime Player.

.MPNT

Macintosh MacPaint

.MPP

Microsoft Project project file (filename extension).

.MPT

Microsoft Project template file (filename extension).

.MPX

Microsoft Project export file (filename extension).

.MRK

Markup - Informative Graphics

.MSG

Message file

.MSN

Microsoft Network document (filename extension).

.MSP

Microsoft Paint

.MUS

Music (filename extension).

.MVB

Microsoft Multimedia Viewer (filename extension).

.MYS

Myst saved game file (filename extension).

.NDX

Index - dBASE

.NET

Network file (filename extension).

.NG

Norton Guides

.NLM

NLM program - NetWare

.NTF

Notes Template File - Lotus Notes database (filename extension).

.OAB

Outlook Address Book - Microsoft (filename extension).

.OAZ

OAZ Fax

.OBD

Microsoft Office Binder (filename extension).

.OBJ

Object module

.OCX

Object Linking and Embedding (OLE) Custom Control (filename extension).

.OLB

OLE Object Library (filename extension).

.OLE

OLE object (filename extension).

.ONX

Onyx Graphics Postershop (filename extension).

.ORI

Original

.OVL

Overlay module

.OVR

Overlay module

.OZM

Sharp Organizer memo bank

.OZP

Sharp Organizer telephone bank

.P10

Tektronix Plot10

.PAB

Personal Address Book - Microsoft (filename extension).

.PAK

Quake game data (filename extension).

.PAL

Paintbrush palette (filename extension).

.PAS

Pascal program file

.PAT

Pattern - Corel Draw (filename extension).

.PBK

Microsoft Phonebook (filename extension).

.PBM

Portable Bit Map

.PCD

Photo CD format

.PCL

HP LaserJet

.PCM

LaserJet cartridge information

.PCS

PICS animation (filename extension).

.PCT

PC Paint

.PCW

PC Write

.PCX

1. PC Paintbrush 2. Graphics file - Zsoft format

.PDG

PrintShop Deluxe (filename extension).

.PDV

PC Paintbrush printer driver

.PFA

Type 1 font - ASCII

.PFB

Type 1 font - encrypted

.PFM

Postscript Font Metrics; Windows Type 1 font metrics

.PGL

HPGL 7475A plotter - vector graphics

.PGM

Portable Gray Map bitmap (filename extension).

.PHTML

HTML document with preprocessing instructions (PPIs) (filename extension).

.PIC

PICT graphics format, or PIXAR picture file

.PICT

Macintosh QuickDraw/PICT This kind of file stores images in QuickDraw vector format. PICT2 can have grayscale bitmapped images also.

.PIF

Program Information File - Windows

.PIT

PackIt - Macintosh compression

.PIX

Inset Systems graphics

.PJX

Project file - Visual FoxPro (filename extension).

.pkg

AppleLink package compression format These files are decodable by StuffIt Expander.

.PL

Perl script (filename extension).

.PLT

Plotter drawing (filename extension).

.PM

PageMaker

.PM3

PageMaker 3 document

.PM4

PageMaker 4 document

.PM5

PageMaker 5 document

.PNG

1. Portable Network Graphics bitmap (filename extension). 2. Paint Shop Pro Browser (filename extension).

.POV

Persistence Of Vision raytracer (filename extension).

.PPA

PowerPoint Add-in - Microsoft (filename extension).

.PPD

PostScript Printer Description

.PPM

Portable PixelMap (filename extension).

.PPS

PowerPoint Slideshow (filename extension).

.PPT

PowerPoint presentation (filename extension).

.PRD

Printer driver - Microsoft Word, Word Perfect, Microsoft Works (filename extension).

.PRG

A dBASE source code file

.PRJ

Project file

.PRN

1. Print file - temporary 2. XyWrite printer driver 3. PostScript file

.PRS

WordPerfect printer driver

.PRT

Formatted text

.PS

PostScript. This is a plain text file.

.PSD

Photoshop Document

.PUB

Publication - Ventura Publisher, Microsoft Publisher (filename extension).

.PWD

Pocket Word document - Microsoft (filename extension).

.PWZ

Microsoft PowerPoint Wizard (filename extension).

.PXL

Microsoft Pocket Excel (filename extension).

.QBW

QuickBooks for Windows (filename extension).

.QDK

Quarterdeck Qemm (filename extension).

.QLB

Quick Library (filename extension).

.QLC

ATM font information

.QRY

Microsoft Query (filename extension).

.qt

QuickTime movie, binary file type (filename extension).

.QTM

QuickTime Movie (filename extension).

.R8L

LaserJet landscape font

.R8P

LaserJet portrait font

.RA

RealAudio

.RAM

Real Audio

.RAS

Raster graphics - Sun

.RAW

Raw file format - bitmap (filename extension).

.rc

A filename extension found in many UNIX files (.newsrc, etc.) which means "run commands".

.REC

Windows Recorder macro file (filename extension).

.REG

Registration file (filename extension).

.REP

Report file (filename extension).

.RFT

RFT-DCA (filename extension).

.RGB

An SGI RGB image file

.RIA

Alpharel Group IV raster graphics

.RIB

Renderman graphics

.RIC

Roch FaxNet

.RIF

Fractal Painter bitmap (filename extension).

.RIFF

Resource Interchange File Format A multimedia file format; the Microsoft equivalent to Amiga IFF format.

.RIX

RIX virtual screen

.RLA

Wavefront raster image

.RLC

CAD Overlay ESP - Image Systems

.RLE

Run Length Encoded

.RM

Real Media.

.RMI

RIFF MIDI file

.RND

AutoShade format

.RNL

GTX Runlength raster graphics

.RPT

Report file (filename extension).

.RTF

Microsoft text and graphics

.S

Assembly language file - Unix

.S3M

MOD music file (filename extension).

.SAM

AmiPro

.SAV

Saved game (filename extension).

.SBP

IBM Storyboard graphics / Superbase text

.SC

Source Code - Paradox

.SCM

ScreenCam movie

.SCP

Dial-up networking script (filename extension).

.SCR

1. Screensaver - Windows. 2. Screen Layout - dBASE. 3. Script for Apple's Disk Copy utility.

.SCT

Screen Capture Text - Lotus

.SDL

SmartDraw Library (filename extension).

.SEA

Self-Extracting Archive (Stuffit or Compact Pro)

.SEG

Segment (of a compressed file saved in segments with Stuffit or Compact Pro)

.SEP

TIFF bitmap (filename extension).

.SET

Setup parameters

.SFL

LaserJet landscape font

.SFP

LaserJet portrait font

.SFS

PCL 5 scalable font

.shar

UNIX shell archive (filename extension), which can be decoded by Unshar.

.SHTML

HTML file with embedded server-side includes (SSIs) (filename extension).

.SI

SoftImage image file

.sig

Signature A .sig file can be set up and automatically attached to outgoing email, newsgroup postings, etc. It includes the name and contact information of the sender, and may also have ASCII art, favorite quotes, etc.

.SIT

Stuffit compressed file

.SLD

AutoCAD slide

.SLK

Symbolic Link (SYLK) spreadsheet (filename extension).

.SMI

Self-Mounting Image. This file is a Macintosh Disk Image, similar to an .img file, but it does not require the use of Disk Copy. When the file is downloaded, a disk image appears on the desktop. The disk image will behave like a read-only disk.

.SND

Sound file

.SNM

Netscape mail (filename extension).

.SPD

Speedo scalable font

.spx

Screen Peace Extension

.SQB

SyQuest Backup (filename extension).

.SRC

A file used in the creation of .INI files for configuration settings (filename extension).

.STY

Style sheet - Ventura

.SVX

Amiga 8SVX sound (filename extension).

.SWP

Swap - temporary file (filename extension).

.SYD

Sysedit backup file (filename extension).

.SYL

SYLK spreadsheet format

.SYNU

SDSC Synu image

.SYS

System file

.TAL

Adobe Type Align

.TAR

Tar - Tape ARchive (filename extension). Tar is a UNIX method of archiving files, which can also be used by PCs. Tar archives files but does not compress them, so sometimes .tar files are compressed with other utilities, which produces extensions like .tar.gz, .tar.Z, and .tgz. Archive files with the .tar extension can be extracted in UNIX with tar or on a PC with WinZip or on the Mac with the program Tar.

.tar.gz

Combined filename extension for a file that has been archived using tar and then gzipped.

.tar.z or .tar.Z

Combined filename extension for a file that has been archived using tar and then zipped.

.taz

Another way of writing .tar.Z

.TBK

Asymetrix Toolbook (filename extension).

.TDF

Typeface definition - Speedo

.TEX

Tex or LaTex document

.TFM

Font metrics - Intellifont

.TGA

TARGA graphics

.tgz

Another name for .tar.z and .tar.gz

.THEME

Desktop theme - Windows 95 (filename extension).

.THN

Thumbnail (filename extension).

.TIF

TIFF graphics file

.TIFF

TIFF graphics file (filename extension).

.TLB

OLE Type Library (filename extension).

.TMP

Temporary file

.TOC

Table Of Contents (filename extension).

.TRM

Terminal settings - Windows (filename extension).

.TTC

TrueType compressed font

.TTF

TrueType font

.TWF

TabWorks File (file extension).

.TX8

MS-DOS text (filename extension).

.TXT

ASCII text file

.USL

LaserJet landscape font

.USP

LaserJet portrait font

.uu

Uuencode compressed file

.uue

Uuencode file

.VBP

Visual Basic Project (filename extension).

.VBX

Visual Basic Extension

.VDA

Targa bitmap (filename extension).

.VGR

Ventura

.VIFF

Khoros Visualization image file

.VLB

Ventura Library (filename extension).

.VOC

Sound Blaster

.VP

Ventura Publisher (filename extension).

.VST

Targa bitmap (filename extension).

.VUE

Relational View - dBASE

.VXD

Virtual Device Driver (filename extension).

.WAB

Windows Address Book (filename extension).

.WAV

Sound file

.WBK

Microsoft Word Backup (filename extension).

.WDB

Microsoft Works Database (filename extension).

.WID

Ventura width table (filename extension).

.WIN

Windows backup file (filename extension).

.WIZ

Microsoft Word Wizard (filename extension).

.WK1

Lotus 1-2-3, up to 2.01

.WK3

Lotus version 3

.WK4

Lotus version 4

.WKQ

Quattro spreadsheet

.WKS

1. Lotus Worksheet (filename extension). 2. Microsoft Works document (filename extension).

.WLR

VRML page

.WMF

Windows Metafile

.WP

WordPerfect

.WPD

1. Windows Printer Description (filename extension). 2. WordPerfect Demo (filename extension). 3. WordPerfect Document (filename extension).

.WPG

WordPerfect Graphics

.WPM

WordPerfect macro

.WPS

Microsoft Works document

.WPT

WordPerfect Template (filename extension).

.WRI

Windows Write document

.WRK

Symphony spreadsheet

.WS1

WordStar for Windows 1 document (filename extension).

.WS2

WordStar for Windows 2 document (filename extension).

.WS3

WordStar for Windows 3 document (filename extension).

.WS4

WordStar for Windows 4 document (filename extension).

.WS5

WordStar for Windows 5 document (filename extension).

.WS6

WordStar for Windows 6 document (filename extension).

.WS7

WordStar for Windows 7 document (filename extension).

.WVL

Wavelet compressed bitmap (filename extension).

.X

AVS X image file

.XAR

Corel Xara drawing (filename extension).

.XBM

X Bitmap

.XFX

JetFax

.XIF

Xerox Image Format (filename extension).

.XLC

Excel chart

.XLK

Microsoft Excel backup (filename extension).

.XLM

Microsoft Excel macro (filename extension).

.XLS

Excel worksheet

.XLT

Microsoft Excel template (filename extension).

.XM

MOD music format (filename extension).

.XPM

X Pixelmap

.XWD

X Window System window dump image

.XXE

Xxencoded file (filename extension).

.YAL

Arts & Letters click art (filename extension).

.Z

Unix compress file

.ZIP

File compressed using PKZIP

.ZOO

Zoo

assistants

A special kind of file used by Claris Works. Assistants guide the user through a task by asking a series of questions and then use the answers to perform a task. Assistants in Claris Works can be used to create such useful items as calendars, newsletters, stationery, labels, and address lists, to make footnotes within a file, to find documents, etc.

bad fix

A failed attempt to repair a computer bug; a fix that doesn't work or that introduces new and unexpected problems. The expression has cropped up a lot in relation to Y2K fixes.

LHA

A DOS compression program. Compressed files have the extension .lhz.

MBX

Message Base - Eudora (filename extension).