Electro Designs

.R    Pegasus Mail Resource File
        Rebol Script
        Progress Compiled Program File
        Ratfor FORTRAN Preprocessor File  [FORTRAN]
  .R??  RAR Compressed File (?? can be 01 to 99)
  .R33  Train Simulator Game File
  .R8   RAW Graphic File
  .R8L  LaserJet Landscape Font
  .R8P  LaserJet Portrait Font
  .RA   RealMedia File  [Viewer]
  .RAM  RealMedia Metafile
  .RAR  RAR Compressed Archive
  .RAS  Sun Raster Graphic  [Viewer]
        Cals Raster File [SwiftView]
  .RAT  Rating System File
        Rats Data
  .RAW  RAW RGB 24-bit Graphic
        Raw Signed PCM Data
  .RAX  Image File
  .RB   RocketEdition File
  .RB1  R:Base Data File
  .RB2  R:Base Data File
  .RB3  R:Base Data File
  .RBF  R:Base Data File
  .RBH  RoboHelp Configuration
  .RBM  Propellerhead ReBirth Modulation v2.0
  .RC   Borland C++ Resource Compiler Script File
        Emacs Configuration
  .RCD  PC Anywhere Recorded Session File
  .RCG  Netscape Newsgroup File
  .RCP  Recomposer's MIDI Sequencer Music File
  .RD1  Descent1 Registered Level File
        DATAIR Retirement Document System Data File
  .RD2  DATAIR Retirement Document System Custom Text File
  .RD3  Ray Dream Designer Graphics
        CorelDream 3D
  .RD4  Ray Dream Designer Graphics
  .RD5  Ray Dream Designer Graphics
  .RDB  TrueVector Rules Database
  .RDF  Resource Description Framework File
        Geoworks UI Compiler Source Code
        Chromeleon Report Definition
  .RDI  Device-independent Bitmap
  .RDL  Descent Registered Level
        RadioDestiny Radio Stream
  .RDS  Ray Dream Studio File
  .RDX  Reflex Data File
  .REC  Sprint Record File
        EpiInfo Data
        Windows Recorder Macro
        RapidComm Voice File
  .RED  Calrion Modula-2 Path Data
  .REF  Cross Reference
  .REG  Registration Data (various)
  .REGET  ReGet Deluxe Downloader
  .REM  Annotation (remark)
  .REP  Text Document
        Report File (various)
        Qwk Reader Reply
  .REQ  Request
  .RES  Resource File (various programs)
  .REV  Geoworks Revision File
  .REX  REXX Program File
        Oracle Report Definition
  .REZ  Resource File
  .RF   Sun Raster Graphic
        RealFlash Clip
  .RF?  SmartWare Compiled Project File (requires login)
  .RFB  RoboForm
  .RFD  RecogniFORM Form Definition
  .RFF  Maggi Graphic File
  .RFG  RFG Integrator System Database
  .RFH  RFG Integrator Householding Database
  .RFT  IBM DisplayWrite Revisable Format Text
  .RGB  Picture File
  .RGI  RealArcade Game Installer (not secured)
  .RGP  RealArcade Game Package
  .RGS  RealArcade Game Installer (secured)
  .RGX  ReaGeniX Code Generator Symbol Table
  .RH   Borland C++ Resource Header File
  .RI   Lotus File
  .RIA  Alpharel Group IV Raster Graphics File
  .RIB  3D Reality Renderman Format Graphics
  .RIC  Ricoh FAX Graphic File
  .RIF  Fractal Painter Bitmap
  .RIP  Remote Imaging Protocol
  .RIX  ColorRIX VGA Paint File
        RIX Virtual Screen
  .RL1  Descent1 Registered Level File
  .RL2  Descent2 Registered Level
  .RL4  Bitmap Graphics
  .RL8  Bitmap Graphics
  .RLA  Advanced Visualizer File
        Wavefront Raster Image
  .RLB  Harvard Graphic File (Harvard Graphics taken over by Serif)
  .RLC  Image Systems CAD Overlay
        Scanner One-bit/pixel Grahpic Output
  .RLE  Graphic (Run Length Encoded)  [Viewer]
  .RLZ  Realizer Source Code
  .RM   RealMedia File
  .RMD  RegMaid Document
  .RMF  Rich Map Format (3D Games)
  .RMI  MIDI File  [Viewer]
  .RMK  Clipper RMake Make File
  .RMM  RealPlayer File
  .RMR  Resume Maker File
  .RMX  RealJukeBox MP3 File
  .RN   Nota Bene XPL Program
  .RND  AutoCAD Rendering Slide
        AutoShade Format
  .RNG  Nokia Ringtone File
  .RNL  GTX Runlength Raster Graphics
  .RNO  VAX Runoff File
  .RNX  RealPlayer File
  .ROL  Adlib Music File
  .ROM  Nintento 64® Emulation ROM Image
        (actually most any emulator or BIOS flasher)
  .ROV  Rescue Rover Data
  .RP   RealPix Clip
  .RPB  Automotive Diagnostic File
  .RPC  Rich Photorealistic Content (ArchVision, Inc.)  [Info]
  .RPD  Rapidfile Database
  .RPL  Replica Text File
  .RPM  RedHat Package Manager (Linux)
        RealMedia Player File
  .RPT  Report (various)
  .RQY  MS Excel OLE DB Query File
  .RR   Railroad Tycoon
  .RRS  Road Rash Save File
  .RS   Amiga Reassembler Resource Data File
  .RS_  Macintosh File Resource Fork
  .RSB  Rogue Spear Bitmap
  .RSC  Resource File
  .RSF  Mediafour MacDrive Macintosh Resource Fork
  .RSL  PC Tools Resources Library
        Borland's Paradox 7 Report
        Adobe Pagemaker File
  .RSN  Propellerhead Reason Audio File
  .RSP  Responce Text File
        Rockwell Software Logix 5 File
  .RSS  Rockwell Logix 500 SLC-5 Software
  .RST  ANSYS Results
  .RT   RealText Clip
  .RTA  RoboHelp Configuration
  .RTF  Rich Text Format File (also used as Windows Help file script)
  .RTH  ANSYS Results
  .RTK  RoboHelp Configuration
  .RTL  Text File
        NU 7.0 Runtime Library
  .RTM  Real Tracker Music Module
  .RTP  TurboTax Update File
        RTPatch Update Package
  .RTS  RoboHelp Configuration
        RealAudio RTSL Document
        Realizer Runtime Library
  .RTX  Reliacast Audience Manager Turnstile
        Mobile Phone Ringtone (extended ringtone format)
  .RUL  InstallShield
  .RUN  PC Tools Script Tools Program
  .RV   RealVideo Clip
  .RVP  Microsoft Scan Configuration File
  .RVW  Review (may just be text file)
  .RWS  Borland C++ Resource Workshop Data File
  .RWX  RenderWare Script
  .RWZ  MS OutlookXP Internet Settings
  .RX   Reflex Database Driver
  .RXD  Reflex Database
  .RXH  Reflex Database Help File
  .RXR  Reflex Database Report
  .RXS  Reflex Database Screen Driver