| ~~~ | Temporary |
| ~$~ | 1st Reader Temporary File |
| ~AP | Borland C++ AppExpert Project Database File |
| ~DE | Borland C++ Project Backup File |
| ~DF | Delphi Form Backup of a DFM File |
| ~DP | Delphi Project Backup of a DPR File |
| ~DR | ARKEY Drawing Backup File |
| ~MN | Norton Menu Backup |
| ~NT | NT Install Files (Used between first & second reboot) |
| ~PA | Delphi Pascal Backup of a PAS File |
| ~PR | Terramodel Project Backup |
| ~SG | TapCIS Message Index File |
| ### | Temporary File |
| #24 | Locoscript 24-pin Printer Data File |
| #IB | Locoscript Dot Matrix Data File |
| #SC | Locoscript Dot Matrix Data File |
| #ST | Locoscript Dot Matrix Printer Definition File |
| --- | Backup |
| $#! | Cryptext |
| $$$ | Used by OS/2 to keep track of archived files |
| $$$ | Backup or Temporary File |
| $$A | OS/2 |
| $$F | OS/2 Database |
| $$P | OS/2 Notes |
| $$S | OS/2 Spreadsheet |
| $00 | DOS system pipefile, also $01, $02... |
| $D$ | OS/2 Planner Data File |
| $DB | dBase Temp File |
| $ED | MS C/C++ Temporary Editor File |
| $LN | Borland C++ TLink Response File |
| $VM | MS Windows Virtual Manager Temp File |
| $VP | Backup of Ventura Publisher VP Document |
| @@@ | Screen Files (shown during various installations) |
| _DD | Norton Disk Doctor Recovered File |
| _DM | Nuts n Bolts Disk Minder Recovered File |
| _H | Adobe Type Manager Japanese Font outline |
| _MP | InstallShield Temporary Installer File |
| _V | Adobe Type Manager Japanese Font metrics |
| (D) | pcAnywhere Temporary File |
| 000 | MS Doublespace Compressed Data File |
| 000 | (000-999) Sequentially Numbered Backup Files |
| 000 | Geoworks Data |
| 000 | Paperport Scanned Image (000-600) |
| 000 | ARJ Multi-volume Compressed Archive (000-999) |
| 001 | Fax Data File (various) |
| 001 | HJSplit File (001-999) |
| 00B | PenSoft Payroll Backup File |
| 01B | PenSoft Payroll Backup File |
| 075 | Ventura Publisher 75dpi Screen Characters |
| 085 | Ventura Publisher 85dpi Screen Characters |
| 091 | Ventura Publisher 91dpi Screen Characters |
| 096 | Ventura Publisher 96dpi Screen Characters |
| 0B | PageMaker Printer Font LineDraw Characters |
| 10X | Gemini Bitmap Printer Graphics File |
| 113 | Iomega Backup File |
| 123 | Lotus File |
| 12A | Lotus 1-2-3, '97 add-in |
| 12M | Lotus Smartmaster File |
| 12U | PageMaker Font File |
| 15U | PageMaker Printer Font |
| 196 | Computer Snooper Log File |
| 1PE | TurboTax Form File |
| 1ST | Text File |
| 24B | 24-bit Graphic File |
| 286 | Windows Standard Mode Driver |
| 2BP | Microsoft Windows CE Gray Scale Bitmap |
| 2D | 2D VersaCAD Drawing File |
| 2GR | Windows EGA/VGA Screen Grabber |
| 301 | Fax Data |
| 303 | Seq-303 Settings |
| 320 | Chromelion Demo Data File |
| 323 | H.323 Internet Telephony |
| 340 | Chromelion Demo Data File |
| 386 | Windows Enhanced Mode Driver or Swap File |
| 3D | VersaCAD 3D Drawing File |
| 3D2 | Stereo CAD-3D drawing |
| 3DB | Moraff Morejongg File |
| 3DM | 3D Modeler File |
| 3DP | Serif 3D Plus |
| 3DS | 3D Studio Graphic |
| 3DT | 3D Topicscape database for a 3D mind map or 3D concept map (More Info) |
| 3DV | Visual Component File |
| 3DZ | Easy 3D Creator Project File |
| 3FX | Corel Chart 3D Effect |
| 3GR | Windows SVGA/XVGA Screen Grabber |
| 3IN | MSN Setup Information |
| 411 | Sony Mavica Data File |
| 4DB | 4D Database Structure File |
| 4DD | 4D Database Data File |
| 4DF | 4D Database Windows Search Document |
| 4DL | 4D Database Windows Log File |
| 4DR | 4D Database Data File |
| 4DS | 4D Database Windows Data Segment |
| 4DX | 4D Database Plug-in |
| 4GE | Informix 4GL Compiled Code |
| 4GL | Informix 4GL Source |
| 4FI | 4D Database Windows ASCII Map |
| 4FR | 4D Database Windows Apply Formula Document |
| 4LB | 4D Database Windows Label |
| 4LK | 4D Database Windows Hot Link File |
| 4PP | PhotoParade Slideshow (Download Viewer) |
| 4QR | 4D Database Windows Quick Report |
| 4ST | 4D Database Windows Saved Set |
| 4SW | 4DOS Swap File |
| 4TH | FORTH Program |
| 4UG | 4D Database Windows User/Groups Set |
| 4V | Quartet Music File |
| 4VR | 4D Database Windows Saved Variable |
| 669 | Unis Composer Music File |
| 669 | 669 Tracker Module |
| 6CM | 669 Composer sound |
| 8 | A86 Assembler Program File |
| 83C | Texas Instruments TI83-Graphlink Complex |
| 83D | Texas Instruments TI83-Graphlink GDB |
| 83G | Texas Instruments TI83-Graphlink Group |
| 83L | Texas Instruments TI83-Graphlink List |
| 83M | Texas Instruments TI83-Graphlink Matrix |
| 83N | Texas Instruments TI83-Graphlink Real |
| 83P | Texas Instruments TI83-Graphlink Program |
| 83S | Texas Instruments TI83-Graphlink String |
| 83T | Texas Instruments TI83-Graphlink Table Setup |
| 83W | Texas Instruments TI83-Graphlink Window Setup |
| 83Y | Texas Instruments TI83-Graphlink Y-Variables |
| 83Z | Texas Instruments TI83-Graphlink Zoom |
| 850 | Microsoft Visual FoxPro, Codepage 850 font |
| 852 | Microsoft Visual FoxPro, Codepage 852 font |
| 854 | Bitmap Picture |
| 866 | Microsoft Visual FoxPro, Codepage 866 font |
| 8B | Adobe Photoshop 2.5 Plug-in driver/filter |
| 8BA | Adobe PhotoDeluxe Plugin (also ends in E, F, I, X, & Y) |
| 8BF | Filter Factory File |
| 8CM | Triton Fast Tracker sound |
| 8M | PageMaker Math 8 Printer Font |
| 8U | PageMaker Roman 8 Printer Font |
| 906 | Calcomp Plotter File |
| 917 | Trend Antivirus File |
| 94B | Guillomet Maxi Home Studio II sound Font |