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Ext. Type of file R3D Redcode Raw video image R3D Realsoft 3D image R8P LaserJet portrait font R8L LaserJet landscape font RA RealAudio RAM RealAudio playlist RAR RAR archive RAS Sun bitmap RAT Content ratings RAW Uncompressed digital camera image RAW Uncompressed data (many formats) RAW 3D file (open standard) RC Resource script RDF RDF metadata RDFS RDF schema REC Recorder REG Windows Registry keys RES Programming resource RFN RoboForm note RFP RoboForm Passcard RFT DCA/RFT document RFT RoboForm identity RGB SGI bitmap RIA Alpharel Group IV bitmap RIB Renderman graphics RIC Roch FaxNet RIX RIX virtual screen RLC CAD Overlay ESP (Image Systems) RLE Compressed (run length encoded) RLF RichLink compiled format RM RealMedia (RealAudio/RealVideo) RMI MIDI music RMM RealMedia RMVB RealMedia VBR RND AutoShade rendering format RNL GTX Runlength bitmap RP RealPix RT RealText RTF Microsoft text/graphics RV RealVideo