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Website  EXT   Filetype description                                    
    FILExt  3D  Atari Stereo CAD-3D Objects Graphics Format (Atari
    File Extensions  3D  Atari Stereo CAD-3D objects graphics format 
    File Extensions  3D2  Atari Stereo CAD-3D 2.0 objects graphics format 
    FILExt  3D2  Stereo CAD-3D Ver. 2.0 Objects Graphics Format (Atari
    FILExt  3D4  Atari Stereo CAD-3D Objects Graphics Format (Atari
    File Extensions  3D4  Atari Stereo CAD-3D objects graphics format 
    FILExt  A52  Atari 5200 Game Image (Atari
    File Extensions  A52  Atari 5200 game image file 
    File Extensions  A78  Atari 7800 image file 
    FILExt  A78  Atari 7800 ROM Image (Atari
    TrID  A78  Atari 7800 ROM 
 Header Hexdump:  01 41 54 41 52 49 37 38 30 30 
    FILExt  ACC  Atari ST Executable 
    File Extensions  ACC  Atari ST program 
    FILExt  ACX  Atari ST Executable 
    File Extensions  ACX  Atari ST program 
    File Extensions  ANI  Atari image format 
    TrID  ANI  Atari NEOchrome animation 
 Header Hexdump:  BA BE EB EA 
    Wikipedia  APP  Executable application file - DR-DOS - NeXTstep - Atari 
    Wikipedia  ARR  Arrangement - Atari Cubase 
    FILExt  ARR  Atari Cubase Arrangement (Steinberg
    File Extensions  ARR  Atari Cubase Arrangement 
    File Extensions  ATR  Atari 8-bit disk image 
    TrID  ATR  Atari ATR Disk Image 
 Header Hexdump:  96 02 80 
    FILExt  ATR  Atari Disk Image File (Atari
    FILExt  B_W  Atari/Macintosh Black and White Graphic 
    File Extensions  B_W  Black & White bitmap image (atari 
    Wikipedia  B_W  Black and white graphics file - atari - mac 
    FILExt  CAMS  Driver (Atari
    FILExt  CAS  Atari Cassette Image File (Atari
    File Extensions  CAS  Atari cassette image file 
    File Extensions  CDK  Atari Calamus document CDKEY = Access Data MEDIAREMOTE 
    Wikipedia  CDK  Document - Atari Calamus 
    File Extensions  CFN  Atari Calamus font data 
    Wikipedia  CFN  Font data - Atari Calamus 
    FILExt  COMPANY  Chris Sawyer’s Locomotion Company Owner Face (Atari Interactive Inc.) 
    FILExt  CPY  Atari Ramdrive CPY Commands 
    FILExt  DCM  Atari Disk Image Format (Atari
    File Extensions  DCM  Atari disk image format 
    FILExt  DI  Atari Disk Image (Atari
    FILExt  DOO  Atari Doodle (Atari
    File Extensions  DOO  Atari Doodle image 
    FILExt  FLM  Image Format on Atari 
    File Extensions  FLM  Image format on Atari 
    FILExt  FRW  RollerCoaster Tycoon Fireworks Source (Atari
    FILExt  FWD  RollerCoaster Tycoon Fireworks Display (Atari
    FILExt  GFA  GFA-BASIC 32 ATARI Tokenized Source Ver. 2.x (GFA Software Technologies
    FILExt  GFA  GFA-BASIC 32 ATARI Tokenized Source Ver. 2.x (Protected) (GFA Software Technologies
    TrID  GFA  GFA-Basic ATARI tokenized source v2.x (protected
 Header Hexdump:  FF 02 47 66 61 42 41 53 49 43 
    TrID  GFA  GFA-Basic ATARI tokenized source v2.x 
 Header Hexdump:  00 02 47 66 61 42 41 53 49 43 
    FILExt  GTP  Atari Executable (Atari
    File Extensions  GTP  Atari ST 
    FILExt  HLX  Hollex Cartridge Atari Cartridge Image File 
    FILExt  HOB  Star Trek: Birth of the Federation Ship Graphic (Atari
    FILExt  HYP  Atari ST Guide Hypertext Document 
    TrID  HYP  Atari ST Guide Hypertext document 
 Header Hexdump:  48 44 4F 43 
    File Extensions  IC1  Atari Image : Bitmap graphics 
    File Extensions  IC2  Atari Image : Bitmap graphics 
    File Extensions  IC3  Atari Image : Bitmap graphics 
    FILExt  LNX  Atari Lynx ROM Image (Atari
    FileInfo  LNX  Atari Lynx ROM 
    TrID  LNX  Atari Lynx ROM 
 Header Hexdump:  4C 59 4E 58 00 
    FILExt  MBK  Atari (Atari
    File Extensions  MBK  Atari 
    FILExt  MSA  Atari MSA Disk Image (Atari
    TrID  MSA  Atari MSA Disk Image 
 Header Hexdump:  0E 0F 00 
    File Extensions  MUR  Atari image format 
    FILExt  NEO  Atari NeoChrome Bitmap Image (Atari
    File Extensions  NEO  Atari NeoChrome bitmap image 
    TrID  NEO  Atari NeoChrome bitmap 
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    Wikipedia  NEO  Raster graphics file - Atari Neochrome 
    Wikipedia  O  Object file - UNIX - Atari - GCC 
    File Extensions  PAC  Atari STAD image format 
    File Extensions  PC1  Atari Degas image 
    File Extensions  PC2  Atari Degas image 
    File Extensions  PC3  Atari Degas bitmap image 
    File Extensions  PI1  Atari Degas bitmap image 
    File Extensions  PI2  Atari Degas image 
    File Extensions  PI3  Atari Degas image 
    File Extensions  PI4  Atari Degas image file 
    File Extensions  PI5  Atari Degas image file 
    File Extensions  PI6  Atari Degas image file 
    FILExt  PIN  Atari ST Graphics Format 
    File Extensions  PIN  Atari ST graphics format 
    FILExt  PRG  Atari ST Program (Infogrames Entertainment SA) 
    TrID  PRG  Atari ST program/executable 
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    File Extensions  PRG  Atari ST program 
    Wikipedia  PRG  Program - Atari 
    FILExt  PRO  Atari Disk Image (Atari
    File Extensions  PRO  Atari disk image format 
    FILExt  PRX  Atari ST Executable 
    File Extensions  PRX  Atari ST executable 
    FILExt  REF  Atari ST Guide Ref Links 
    TrID  REF  Atari ST Guide ref links 
 Header Hexdump:  48 52 45 46 
    FILExt  SAP  Atari SAP Music Format (Atari
    TrID  SAP  Atari SAP music format 
 Header Hexdump:  53 41 50 0D 0A 41 55 54 48 4F 52 20 
    FILExt  SC4  RollerCoaster Tycoon Scenario (Atari
    FILExt  SC6  RollerCoaster Tycoon 2 Scenario (Atari
    FILExt  SCP  Atari Disk Image (Atari
    Wikipedia  SEQ  Atari animation file 
    File Extensions  SEQ  ATARI STAD image format 
    File Extensions  SND  ATARI digitized sound file 
    Wikipedia  SND  Digitized sound file - Macintosh/ATARI/PC 
    File Extensions  SPC  Atari compressed Spectrum file : Bitmap graphics 
    FILExt  SPC  Atari Compressed Spectrum File Bitmap Graphic (Atari
    FILExt  SPS  Image Atari Spectrum 512 
    File Extensions  SPS  Image Atari Spectrum 512 
    File Extensions  SPU  Atari compressed Spectrum bitmap image 
    FileInfo  ST  Atari ST Disk Image 
    FILExt  ST  Atari ST Disk Image 
    File Extensions  ST  Disk Image file (Atari
    FILExt  SV1  RollerCoaster Tycoon Saved Game (Atari
    FILExt  SV2  RollerCoaster Tycoon Saved Game (Atari
    FILExt  SV3  RollerCoaster Tycoon Saved Game (Atari
    FILExt  SV4  RollerCoaster Tycoon Saved Game (Atari
    FILExt  SV5  RollerCoaster Tycoon Saved Game (Atari
    FILExt  SV6  RollerCoaster Tycoon Saved Game (Atari
    FILExt  SV7  RollerCoaster Tycoon Saved Game (Atari
    FILExt  SV8  RollerCoaster Tycoon Saved Game (Atari
    FILExt  SV9  RollerCoaster Tycoon Saved Game (Atari
    FILExt  TD4  RollerCoaster Tycoon Track Design (Atari
    FILExt  TD6  RollerCoaster Tycoon Track Design (Atari
    FILExt  TDB  Ballance High Score Database (Atari
    FILExt  THK  Atari STE Sound File Format 
    FileInfo  TNY  Atari Tiny Image 
    File Extensions  TNY  TiNY bitmap image used on Atari 
    FILExt  TOS  Atari Executable (Atari
    TrID  TOS  Atari ST TOS executable 
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    File Extensions  TOS  Self-extracting file archive (Atari ST) 
    Wikipedia  TOS  Self-extracting file archive (Atari ST) 
    FILExt  TP4  RollerCoaster Tycoon Track Design (Atari
    FILExt  TRK  RollerCoaster Tycoon Track Model (Atari
    File Extensions  TTP  Atari Falcon Application 
    FILExt  TTP  Atari TOS Executable With Parameters (Atari
    FILExt  XFD  Atari Disk Image (Atari
    File Extensions  XFD  Atari disk image 
    File Extensions  YM  Atari ST Audio 
    FILExt  YM  Atari ST YM2149 Module/Song (Atari

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