The method of classification has already been answered:
/question/11258026.html
The type of classification is:
A object Code library file
AAM Authorware shocked file
AAS Authorware shocked package
ABF Adobe binary screen font
ABK CorelDRAW automatic backup file
ABS This type of file is sometimes used to indicate an abstract
ACE Ace compressed archive format
ACL CorelDRAW 6 keyboard shortcut file
ACM Windows system directory file
ACP Microsoft office assistant preview file
ACR American College of Radiology file format
ACT Microsoft office assistant file
ACV OS/2 driver for compressing or decompressing audio data
AD After Dark screensaver
ADA Ada source file (non-GNAT)
ADB Ada source file body (GNAT); HP100LX organizer's convention database
ADD OS/2 adapter driver for the boot process
ADF Amiga disk file
ADI AutoCAD device-independent binary plotter format
ADM After Dark multi-module screen saver; Windows NT policy template
ADP FaxWork interactive installation file for fax modems; Astound Dynamite file
ADR After Dark random screen saver; Smart Address address book
ADS Ada source file specification (GNAT)
AFM Adobe font scale
p>AF2, AF3 ABC FlowChat files
AI Adobe Illustrator format graphics
AIF, AIFF audio mutual exchange files,
AIFC compressed AIF
AIM AOL instant messaging
AIS ACDSee graphics sequence file; Velvet Studio device file
All A-keywords in the help project of AKW RoboHELP
ALAW European Telephone Audio Format
ALB JASC Image Commander Album
ALL Art and Letter Library
AMS Velvet Studio Music Module (MOD) file; Extreme Tracker module file
ANC Canon Computer's palette file, containing a series of optional color palettes
ANI Animated cursor in Windows system
ANS ANSI text file
Game file saved in ANT SimAnt For Windows
API Application Programming Interface file used by Adobe Acrobat
APR Lotus Approach 97 file
p>
APS Microsoft Visual C file
ARC LH ARC compressed archive file
ARI Aristotle sound file
ARJ Robert Jung ARJ compressed package file
ART Xara Studio painting file; Canon Crayola art file; Clip Art file format; another ray tracing format ;Tagged files compressed by Johnson-Grace compression algorithm used by AOL
ASA Microsoft Visual InterDev files
ASC ASCⅡ text files; PGP algorithm encrypted files
ASD Automatically saved file of Microsoft Word; description file of Microsoft advanced streaming FORMat (ASF); Velvet Studio sample file can be opened with NSREX
ASE Velvet Studio sample file
ASF Microsoft Advanced Streaming Format File
ASM Assembly Language Source File, Pro/E Assembly File
ASO Astound Dynamite Object File
ASP Dynamic Web Page File; ProComm Plus installation and connection script files; Astound introduction files
AST Astound multimedia files; ClarisWorks "assistant" files
ASV DataCAD automatic save files
ASX Cheyenne backup script File; Microsoft Advanced Streaming Redirector File, Video File
ATT ATlt; Group 4 Bitmap File
ATW Any Time Deluxe For Windows Personal Information Manager File from Personal Software
AU Sun/NeXT/DEC/UNIX sound files; Audio U-Law (pronounced "mu-law") file format
Virus infection by AVB Computer Associates Inoculan anti-virus software Post File
AVI Microsoft Audio Video Interleave Movie Format
AVR Audio Visual Research File Format
AVS Application Visual Format
AWD FaxVien Documentation
AWR Telsis digital storage audio file extension format
Axx ARJ compressed file sub-package number file, used to compress a large file into several small compressed packages ( xx takes the number 01-99)
A3L Authorware 3.x library file
A4L Authorware 4.x library file
A5L Authorware 5.x library file
A3M, A4M Authorware Macintosh unpackaged files
A4P Authorware unpackaged files without runtime
A3W, A4W, A5W Unpackaged Authorware Windows files
p>
BAK backup file
BAS BASIC source file
BAT batch file
BDF West Point Bridger Designer file
BFC Windows 95 Briefcase Document
BG Backgammon F
or game files under Windows
BGL Microsoft Flight Simulator (Microsoft Flight Simulator) visual file
BI binary file
BIF Group Wise initialization file
BIFF XLIFE 3D format file
BIN binary file
BK, BK$ are sometimes used to represent backup versions
BKS IBM BookManager Read Bookshelf file
BMK bookmark file
BMP Windows or OS/2 bitmap file
BMI Apogee BioMenace data file
BOOK Adobe FrameMaker Book file
BOX Lotus Notes mailbox file
BPL Borlard Delph 4 packaging library
BQY BrioQuery file
BRX is used to view multimedia Files in the object directory
BSC MS Developer Studio browser information files
BSP Quake graphics files
BS1 Apogee Blake Stone data files
BS_ Microsoft Bookshelf Find menu shell extension
Batch file used by BTM Norton application
BUD Quicken's backup disk
BUN CakeWalk sound bundle file (one MIDI program)
BW SGI black and white image file
BWV commercial wave file
BYU BYU movie file format
B4 Helix Nuts and Bolts file
C C code file
C0l Typhoon wave file
CAB Microsoft compressed archive file
CAD Softdek's Drafix CAD file
CAL CALS compressed bitmap; calendar schedule data
CAM Casio camera format
CAP compressed music file format
CAS comma separated ASCⅡ file
IntellCharge classification file used by CAT Quicken
CB Microsoft clean boot file
CBI binary volume format file (for IBM mainframe systems)
p>CC Visual dBASE user-defined class file
CCA cc: mail file
CCB Visual Basic dynamic button configuration file
CCF Multimedia Viewer Configuration file, for OS/2
CCH Corel chart file
CCM Lotus cc:mailbox (e.g. "INBOX.CCM")
CCO CyberChat data file
CCT Macromedia Director Shockwave projection
CDA CD audio track
CDF Microsoft channel definition format file
CDI Philip's high-density disk interactive format
CDM Visual dBASE custom data module file
CDR CorelDR
AW drawing file; original audio CD data file
CDT CorelDRAW template
CDX CorelDRAW compressed drawing file; Microsoft Visual FoxPro index file
CEL CIMFast event language file
CER certificate file (MIME x-x509-ca-cert)
CFB Compton’s multimedia file
CFG configuration file
CFM CotdFusion template file; Visual dBASE Windows user customization form
CGI public *** gateway interface script file
CGM computer graphics metafile
CH OS/2 configuration File
CHK File fragments saved by Windows Disk Defragmenter or Disk Scan
CHM Compiled HTML file
CHR character set (font file)
CHP Ventura Publisher Chapter File
CHT ChartViem File; Harvard Graphics Vector File
CIF Adaptec CD Creator CD Image File
CIL Clip Gallery download package
CIM SimCity 2000 file
CIN OS/2 change control file is used to track changes in INI files
CK1 iD/Apogee Commander Keen 1 Data files
CK2 iD/Apogee Commander Keen 2 data files
CK3 iD/Apogee Commander Keen 3 data files
CK4 iD/Apogee Commander Keen 4 data files
CK5 iD /Apogee Commander Keen 5 data file
CK6 iD /Apogee Commander Keen 6 data file
CLASS Java class file
CLL Crick Software Clicker file
CLP Windows clipboard file
CLS Visual Basic class file
CMD Windows NT, OS/2 command file; DOS CD/ M command file; dBASEⅡ program file
CMF Corel meta file
CMG Chessmaster saved game file
CMP JPEG bitmap file; address file
CMV Corel Move animation file
CMX Corel Presentation Exchange image
CNF Configuration file used by Telnet, Windows, and other applications where formatting changes
CNM Windows application menu options and installation files
CNQ Compuworks Design Shop files
CNT Windows (or other) system content files for help indexing or other purposes
COB TrueSpace 2 Object File
Displayable machine code/assembly code file generated by COD Microsoft C compiler, with source C code as comments
>
COM command file (program)
CPD Corel Print Office file (graphic)
CPD, CPE fax overlay document
CPI Microsoft MS-DOS Code page information file
CPL control panel extension, Corel color palette
CPO Corel print storage file
CPP C code file
CPR Corel provides instruction files
CPT Corel photos-painting images
CPX Corel Presentation Exchange compressed graphics files
CRD ??Windows Cardfile files
Runtime introduction file provided by CRP Corel; Visual dBASE custom report file
CRT certification file
CSC Corel script file
CSP PC Emcee On_Screen image
p>
CSS waterfall table file
CST Macromedia Director Cast file
CSV comma separated value file
CT Scitex CT bitmap file; Paint Shop Pro Grapic Editor File
CTL is typically used to represent a file containing control information; FaxWork uses it to maintain information about each fax received or sent
CUE Microsoft Tips Brand data file
CUR Windows cursor file
CUT Dr Halo bitmap file
CV Corel version archive file; Microsoft CodeView information screen file
CWK ClarisWorks data file.
CWS ClarisWorks module
CXT Macromedia Director protected (non-editable) projection file
CXX C source code file
DAT data file; WrodPerfect merged data file; used for some MPEG format files
DB Borland's Paradox 7 table
DBC Microsoft Visual FoxPro database container file
DBF dBASE files, a format created by Ashton-Tate, can be ACT! , Lipper, FoxPro, Arago, Wordtech Xbase and similar database or database-related product identification; available data files (can be opened by Excel 97); Oracle 8.1.x table space files
DBX DataBearn image; Microsoft Visual FoxPro table file
DCM DCM module format file
DCR shock wave file
DCS desktop color separated file
DCT Microsoft Visual FoxPro database container
DCU Delphi compilation unit file
DCX Microsoft Visual FoxPro database container; PCX-based fax image; macro
DC5 DataCAD drawing file
DDF Btrieve or Xtrieve data definition file, which contains the
Or the metadata of Xtrieve files
DDIF Digital Equipment or Compaq format, used to save their image and word processing documents
DEF SmartWareⅡ data file; C module definition file
DEFI Oracle 7 uninstall script file
DEM file representing the USGS datum of the digital height model
DER certification file
DEWF Macintosh Sound Cap/Sound Edit recording device format
DGN Macintosh 95 CAD drawing file
DIB device-independent bitmap
DIC directory
DIF can perform data exchange Replaced spreadsheet
DIG DigiLink format; Sound DesignerⅠ audio file
DIR MacromediaDirector file
DIZ description file
DLG C dialog box Script file
DLL dynamic link library
DLS downloadable sound file
DMD Visual dBASE data module file
DMF X-Trakker music Module (MOD) file
DOC FrameMaker or FrameBuilder document; Word Star document, Word Perfect document, Microsoft Word document; DisplayWrite document
DOT Microsoft Word document template
DPL Borland Delph3 compression library
DPR Borland Delphi project header file
DRAW Acorn's object-based vector image file
DRV driver
DRW Micrografx Designer/Draw; Pro/E painting files
DSF ??Micrografx Designer VFX files
DSG DOOM saved files
DSM Dynamic Studio music module ( MOD) file
DSP Microsoft Developer Studio project file
DSQ Corel QUERY (query) file
DST embroidery machine graphics file
DSW Microsoft Developer Studio workspace file
DTA Word Bank (World Bank) STARS data file
DTD SGML document type definition (DTD) file
DTED ground height Digital data (graphic data format) file
DTF Symantec Qamp;A related database data file
DTM DigiTrakker module file
DUN Microsoft dial-up network export Files
DV digital video files (MIME)
DWD DiamondWare digital files
DWG AutoCAD drawing files; drawing formats of older versions of AutoCAD or Generic CADD
p>
DXF Interchangeable drawing file format, binary text representation in DWG format; data exchange file
DXR Macromedia D
irector protected (non-editable) movie file
D64 Commodore's 64-bit emulated disk image file
EDA Ensoniq ASR disk image
EDD Element Definition Document (FrameMaker SGML document)
EDE Ensoniq EPS disk image
EDK Ensoniq KT disk image
EDQ Ensoniq SQ1/SQ2/Ks32 disk image
EDS Ensoniq SQ80 disk image
EDV Ensoniq VFX-SD disk image
EFA Ensoniq ASR file
EFE Ensoniq EPS file
EFK Ensoniq KT file
EFQ Ensoniq SQ1/SQ2/Ks32 file
EFS Ensoniq SQ80 file
EFV Ensoniq VFX-SD file
EMD ABT Extension module
EMF Windows Enhanced Metafile
EML Microsoft Outlook Express Mail Message (MIME RTC822) file
ENC replay file
ENFF Neutral file format extension
EPHTML Perl interpreted enhanced HTML file
EPS compressed PostScript image
EPSF compressed PostScript file
ERI ERWin file
ERR A file used to store error messages when the RobooHELP help compiler attempts to compile a help system source file
EPX ERWin file
ESPS ESPS Audio Files
EUI Ensoniq ESP Family Compressed Disk Image
EVY Envoy Documentation
EWL Microsoft Encarta Documentation
EXC Microsoft Word Prohibited Words Dictionary
EXE executable file (program)
F FORTRAN file
F2R Farandoyle linear module format
F3R Farandoyle block linear module Format
F77 FORTRAN file
F90 FORTRAN file
FAR Fradole Composer Music Module (MOD) file
FAV Microsoft Outlook Navigation Bar
FAX Fax Type Image
FBK Navison Financial Backup
FCD Virtual CD-ROM
FDB Navison Financial Database
FDF Adobe Acrobat Form Document File
FEM CADRE Finite Element Network File
FFA, FFL, FFO, FFK Microsoft Quick Find File
FFF GUS PnP Bank File Format
FFT final format text (part of IBM's DCA)
FH3 Aldus Freehand 3 drawing file
FIF Fractal image file
FIG Text used by REND386/AVRIL
File format
FITS CCD camera image; Flexible Image Transfer System
FLA Macromedia Flash movie
FLC Autodesk FLIC animation file
FLF Corel Format produced by Paradox: Navison Financials license file; OS/2 driver file
PLI Autodesk FLIC animation
FLT StarTrekker Music Module (MOD) file; used by MultiGen Inc's Open Flight File format; Corel filter file
FM Adobe FrameMaker document
FMB Oracle version 4.0 or later version form binary source code file
FML file image List (GetRight)
Text format of the FMT Oracle version 4.0 or later version form; Microsoft Schedule print file
FMX Oracle version 4.0 or later version executable form
FND Microsoft Explorer saved search file (Find applet)
FNG font group file (Font Navigator, Font Navigator)
FNK Funk Tracker module format
FOG Fontographer module font
FON system font
FOR FORTRAN file
FOT font related files
FP FileMaker Pro file
FP1 Flying Pigs for Windows data files
FP3 FileMaker Pro files
FPT FileMaker Pro files; Microsoft Fox Pro remark font files
FPX FlashPix bitmaps
FRM form; Frame Maker or Frame Builder document; Oracle executable form (version 3.0 or earlier); Visual Basic form; WordPerfect Merge form; DataCAD logo report file
FRT Microsoft FoxPro report file
FRX Visual Basic form text; Microsoft FoxPro report file
FSF fPrint Audit Tool file format
FSL Borland's Paradox 7 form; Corel Paradox save Form
FSM Parandoyle Sample Format
FT Lotus Notes Full Text Index
FTG Full Text Search Group file, generated when looking up by the Windows Help system - can Delete and rebuild if necessary
FTS full-text search index file, generated by the Windows help system when looking for it
FW2 Framework Ⅱ file
FW3 Framework Ⅲ File
FW4 Framework IV file
FXP source file compiled by Microsoft FoxPro
FZB Casio FZ-1 bank transfer
FZF Casio FZ-1 Full Dump
p>
FZV Casio FZ-1 sound dump
G721 Raw CCITT G.721 $bit ADPCM format data
G723 Raw CCITT G.723 3 or 5bit ADPCM format data
GAL Corel Multimedia Manager Photo Album
GCD Generic CADD drawing file (subsequent version)
GCP Ground Control Point (ground control point) file, used for The image formation process of vision data is often used to generate graph projects - CHIPS (copenhagen image processing system) uses these files
GDB InterBase database files
GDM bells, whistles and soundboard modules Format
GED GEDCOM Genealogical Data File, popular format for recording and exchanging genealogical data; Graphical Environment Document Paint
GEM GEM Metafile
Generated by GEN Ventura Text file
GetRight GetRight unfinished download file
GFC Patton& Patton FlowCharting 4 flowchart file
GFI, GFX Genigraphics graphic link representation file
GHO Norton clone disk image
GID Windows 95 global index file (including help status)
GIF CompuServe bitmap file
GIM, GIX Genigraphics Graphic link introduction file
GKH Ensoniq EPS home cluster disk image file
GKS Gravis Grip Key document
GL animation format
GNA Genigraphics Graphic link introduction file
GNT generated code, executable code in Micro Focus attribute format
GNX Genigraphics graphic link introduction file
GRA Microsoft Graph file
p>
GRD is a format file used in the process of generating maps from remote visual data. It is usually used to form map projects - CHIPS (copenhagen image processing system) uses these files
GRF Grapher (Golden Software Company) Graphic File
GRP Program Management Group
GSM Raw GSM 6.10 audio stream; Raw "byte aligned (bit-aligned)" GSM 6.10 audio stream; US Robotics Voice Modem
GTK Graoumftracker (old) music module (MOD) file
GT2 Graoumftracker (new) music module (MOD) file
GWX, GWZ Cenigraphis graphic link introduction file
GZ UNIX gzip compressed file
H C program header file
HCM IBM HCM configuration file
HCOM sound tool HCOM format
HCR IBM HCD/HCM Product Profile
HDF Local Center for Advanced Computer Applications (NCSA) geospatial Hierarchial
Data format file
HED HighEdit document
HEL Microsoft Hellbender format saved game file
HEX Macintosh BinHex2.0 file
HGL HP Graphical language drawing file
HH mapping file, including some topic ID and the mapping number of the topic in the help file system - allows a running application to send the user appropriate contextual help topics
HLP Help File; Date CAD Windows Help File
HOG Lucas Arts Dark Forces WAD File
HPJ Visual Basic Help Project
HPP C Program Header File
p>HQX Macintosh BinHex 4.0 file
HST history file
HT HyperTerminal (Super Terminal)
HTM, HTML hypertext document
HTT Microsoft Hypertext Template
HTX Extended HTML Template
HXM Descent2 HAM File Extension
ICA Citrix File
ICB Targa Bitmap file
ICC Kodak printer format file
ICL icon library file
ICM graphic color matching profile
ICO Windows icon
IDB MSDev middle layer file
IDD MIDI device definition
IDF MIDI device definition (file required for Windows 95)
IDQ Internet data Query file
IDX Microsoft FoxPro related database index file; Symantec Qamp; A related database index file; Microsoft Outlook Express file
IFF interchange format file; Amiga ILBM
IGES Initial Graphics Exchange Description File
IGF Insert System Metafile
IIF QuickBooks for Windows Exchange File
ILBM Bitmap Graphics File
IMA WinImage disk image file
IMG GEM image
IMZ WinImage compressed disk image file
INC assembly language or dynamic server include file
INF information file
INI initialization file; "nwsynth.ini" of MWave DSP Synth GMS installation; Cravis Ultrasound bank installation
INP Oracle version 3.0 or earlier version form source code
INRS INRS remote communication audio
INS InstallShield installation script; X-Internet signature file; Ensoniq EPS cluster device; Cell/II MAC/PC sampling device
INT Intermediate code,
IOF Findit document
IQY Microsoft Internet query file
ISO lists the files on the CD-ROM according to the ISD 9660 standard for CD-ROM file systems. Documentation
ISP X-Inter
net signature file
IST digital tracking device file
ISU InstallShield uninstallation script
IT pulse tracking system music module (MOD) file
ITI Pulse Tracking System Equipment
ITS Pulse Tracking System Sampling, Internet Documentation Location
IV File Format Used in Open Inventor
IVD Over 20/20 Microdata Dimension or variable level files
IVP exceeds 20/20 user subset profiles
IVT exceeds 20/20 table or aggregate data files
IVX exceeds 20/20 Microdata Catalog File
IW Idlewild Screensaver
IWC Install Watch Documentation
J62 Ricoh Camera Format
JAR Java Archive files
JAVA Java source files
JBF Paint Shop Pro image browser files
JFF, JFIF, JIF JPEG files
JMP SAS JMPDiscovery tabular statistics file
JN1 Epic MegaGames' Jill of the Jungle data file
JPE, JPEG, JPG JPEG graphic files
JS javascript source file
p>
JSP HTML page containing a reference to a Java servlet
JTF JPEG bitmap file
K25 Kurzweil 2500 sample file
KAR Karaoke MIDI File (Text MIDI)
KDC Kodak Light Intensifier
KEY DataCAD Icon Toolbar File
KFX KoFak Group 4 Image File
KIZ Kodak digital postcard file
KKW RoboHELP help project indexes all keywords starting with K that are not related to the topic in the designer
KMP Korg Trinity KeyMap file
KQP Konica camera local file
KR1 Kurzweil 2000 sampling (multiple floppy drives) file
KRZ Kurzweil 2000 sampling file
KSF Korg Trinity sampling file
KYE Kye game data
LAB Visual dBASE label file
LBM Deluxe Paint bitmap file
LBT, LBX Microsoft FoxPro label file
LDB Microsoft Access Locked File
LDL Corel Paradox Distribution Library
LEG Legacy Documentation
LES Logitech Entertainment System Game Configuration File (with REC file Same)
LFT 3D Studio (DOS) loft file
LGO Paintbrush (Microsoft painting application) logo file
LHA LZH replacement file suffix
LIB library file
LIN DataCAD line file
Generated by LIS Structured Query Report (SQR) program
Output Files
LLX Laplink Exchange Agent
LNK Windows Shortcut Files
LOG Log Files
LPD Helix Nut and Bolt Files
p>
LRC Intel videophone files
LSL Corel Paradox saved library files
LSP AutoLISP, CommonLISP and other LISP language files
LST list Files
LU ThoughtWing library unit files
LVL Parallax Software's Miner Descent/D2 Level extension
LWLO Lightwave layered object files
LWOB Lightwave Object File
LWP Lotus WordPro 96/97 File
LWSC Lightwave Vision File
LYR DataCAD Layer File
LZH LH ARC compressed archive
LZS Skyroads data file
M1V MPEG related files (MIME "mpeg" type)
M3D Corel Motion 3D animation files
M3U MPEG URL (MIME sound file)
MAC MacPaint image file
MAD Microsoft Access module file
MAF Microsoft Access form file
MAG graphics file format found in some Japanese files
MAGIC Magic Mail Monitor configuration file
MAK Visual Basil or Microsoft Visual C project file
MAM Microsoft Access macro
MAN UNIX man page output
MAP mapping file; Duke Nukem 3D WAD game file
MAQ Microsoft Access query file
MAR Microsoft Access report file
MAS Lotus Freelance Graphics Smart Master file
MAT Microsoft Access table; 3D Studio MAX material library
MAUD MAUD sampling format
3DStudio MAX file for MAX Kinetx; this format is used for a 3D scene file; Paperport file; OrCAD design file
MAZ Hover lost data; file format used by Division's dVS/dVISE
MB1 Apogee Monster Bash data file
MBOX Berkeley Unix mailbox format
MBX Microsoft Outlook save email format; Eudora mailbox
MCC Dailerl0 call Card
MCP Metrowerks CodeWarrior project file
MCR DataCAD keyboard macro file
MCW Microsoft Word Macintosh document
MDA Microsoft
In-Access extractor; workgroup events for Microsoft Access version 2.0 and subsequent versions
MDB Microsoft Access database
MDE Microsoft Access MDE file
MDL number Tracker Music Module (MOD) File; Quake Module File
MDN Microsoft Access Empty Database Template
MDW Microsoft Access Workgroup File
MDZ Microsoft Access Wizard Template File
MED music editor, OctaMED music module (MOD) file
MER spreadsheet/database data exchange format; recognized by FileMaker, Excel and other software
MET Representation Manager Metafile
MFG Pro/ENGINEER Manufacturing File
MGF file format in Materials and Geometry
MHTM, MHTML MHTML document ( MIME)
MI Miscellaneous
MIC Microsoft Image Composer File
MID MIDI Music
MIF Adobe FramMaker Interchange Format
MIFF Machine Independent Format File
MIM, MIME, MME Internet Mail Extensions multi-purpose file, often created as an attachment in AOL when sending e-mail; in a multi-zone
The files in the MIM file can be opened with WinZip or other similar programs
MLI 3D Studio’s material library format file
MMF Meal Master format; a prescription format ;Microsoft Mail File
MMG Over 20/20 Table or Assembly Data File
MMM Microsoft Multimedia Movie
MMP Mindmapor Mind Manager File
MN2 Descent2 task file
MND, MNI Mandelbort for Windows
MNG multi-image network graphics
MNT, MNX Microsoft FoxPro menu file
MNU Visual dBASE menu files; Intertel Systems Interact menu files
MOD Fast Tracker, Star Trekker, Noise Tracker (etc.) music module files; Microsoft multi-plan spreadsheets; Amiga/PC track files
MOV QuickTime for Windows Movies
MP2 second layer MPEG audio files
MP3 third layer MPEG audio files
MPA MPEG related files, MIME "mpeg type"
MPE, MPEG, MPG MPEG animation files
MPP Microsoft project files; CAD drawing file formats
MPR Microsoft FoxPro menu (compiled)
MRI MRI Scan File
MSA Magic Shadow File
MSDL Manchester Scene Description Language
MSG Microso
ft Mail Message
MSI Windows Installer Package
MSN Microsoft Network Documentation; Descent Mission Documentation
MSP Microsoft P