K = Macromodel chemical modeller output file
    K = NRJ live file
    K00 = Tonline Db file
    K01 = Tonline Db file
    K02 = Tonline Db file
    K03 = Tonline Db file
    K1S = Wave Glib19 file
    K25 = Kodak DC25 Digital Camera File
    K25 = Kurzweil 2500 Sample
    K3D = 3DS : Description of macro language
    kaar = (MAC FILE_TYPE) SignPost Map
    KAHL = (MAC CREATOR CODE) Think Pascal KAHL text
    KAHL = (MAC FILE_TYPE) Think Project Manager
    KAL = Sfkal calender Kal_40 file
    KAR = MIDI music with word track : Karaoke
    KAR = Mime: audio/midi
    KAR = Mime: music/x-karaoke
    KAR = Rus. FOX+ 2.0 : Precompiled for KARAT
    KAT = Katorzer (music composition)
    KB = Borland C++ Keyboard Script
    KB = Knowledge Pro : Program source
    KBD = Keyboard layout IRMA WORKSTATION FOR WINDOWS
    KBD = Keyboard Script File Layout (various)
    KBI = Keirsey-Bates Temperament Sorter Index
    KBM = Reflection 4.0 : Keyboard mapping
    KBP = Keirsey-Bates Temperament Sorter Profile
    KBR = Keirsey-Bates Temperament Sorter Data
    KBR = The Drums Pro file
    KCF = Kiss palette file
    KCH = K-Chess notation
    KCL = Kyoto Common LISP Source Code
    KDC = PhotoEnhancer: Image Kodak Digital Camera, max 24 bits
    KDK = Kodak proprietary decimated TIFF format : Bitmap graphics
    KDO = Kudo picture browser
    KE$ = Modem Bitware Fax disk2 file
    KE_ = Ntgraph Ze32v215 file
    KED = KEDIT Profile and Macro File (DOS-based version of IBM XEDIT)
    KEN = Player Cdcheck compressed file
    KEP = Turbo Pascal Dos Tp19 compressed Kepler file
    KEV = JAWS7 (preload.kev)
    KEX = KEDIT Profile File /makro
    kext = (MAC FILE_TYPE) Kernel Extension
    KEY = Archive .key-file (OS/2)
    KEY = ArcView : geocoding matching keys (ODB format)
    KEY = DataCAD Icon Toolbar File
    KEY = Forecast Pro : Datafile
    KEY = FractInt demo script
    KEY = KEYboard macros
    KEY = Security file eg. Shareware Registration info
    KEY = TBAV file
    KEYBOARD = Amaya config file
    kfil = (MAC FILE_TYPE) Keyboard Filech Skeyboard
    KFX = Kofax Group 4 format : Bitmap graphics
    KGB = Z80 Spectrum Emulator Snap/File Formats
    KGP = Image
    KID = Tonline Bsw4 install Mdmimp file
    Kid2 = (MAC FILE_TYPE) Kid Pix
    Kids = (MAC FILE_TYPE) Kid Pix
    KIF = Knowledge Interchange Format draft proposition
    KIL = Interview file
    KIN = Kinemage chemical test
    KIN = Mime: chemical/x-kinemage
    KIN = Protein Structure Images : Kinetic
    KIT = Power Chord : Power Chords drum kit file
    KIZ = Kodak : Digital postcard
    KIZ = UUencoded file
    KKW = RoboHELP Keyword Help project Index File
    KLB = album GraphicWorks
    KLB = Klemmbretter
    KLI = KalKulator linear algebra file
    KM_ = Midiprg Seqmax Seqprest compressed file
    KML = Kedit Macro Library
    KML = Win48 script (HP48 emulator)
    KMP = Korg Trinity : KeyMaP
    KnDB = (MAC FILE_TYPE) Now Contact File
    KNN = Clarion : Database key file
    kNNk = (MAC FILE_TYPE) OmniPage Professional
    KNO = Personal Knowbase File
    KNW = Known problems
    KO = IBM/tools/updater file
    KOA = Image Koala Paint
    KOD = Code
    KOE = Turbo Pascal Dos file
    KOR = corean text file
    KOR = correction file
    KOS = MicroType Pro Document
    KOSIMA = Kosima file
    KP04 = (MAC FILE_TYPE) Kai's Power Tools Presets
    KPL = Kazaa ?????
    KPP = Kudo place pack, place module
    KPP = SmartPad : Toolpad
    KPR = Fifa World Cup game data comon be file
    KPS = Ibm KIPS bitmap image graphics
    KQba = (MAC CREATOR CODE) KeyQuencer
    KQP = Bitmap image (Konica Quality Photos) floppy shot
    KR1 = Kurzweil 2000 Sample (multi-floppy)
    KRAK = (MAC FILE_TYPE) Hacker's Helper
    KRIS = Kris tracker format aka ChipTracker by NoiseConverter & Exotic
    KRN = Game: nba99 ice hockey foregrnd fonts file
    KRY = Herolab Krypten
    KRZ = Kurzweil 2000 Sample
    KS = MSWorks sheet
    KSC = Korg Trinity Script
    KSE = Keepsake Studio Export File
    KSF = Korg Trinity : Sample File
    KSH = ksh : Unix shell script : korn shell
    KSH = Mime: application/x-ksh
    KSH = Mime: text/x-script.ksh
    KSH = Prodigy Internet Registration File
    KSM = Kefrens-Sound Machine format
    KSM = KSM Embroidery file format for PFAFF machines
    KTH = Audio (short ints, mono,1024 byte kth standard header)
    KTT = KeyText Data File
    KUMAC = Physics Analysis Workstation Macro File
    KVT = Basic Quickbas Quickb03 file
    KW$ = Ntgraph Visual c wizzard file
    KWD = Keyword
    KWF = Delphi Pascal Chart
    KYB = FTP Software PC/TCP : Keyboard mapping
    KYB = Keyboard Layout: various prgs
    KYE = Kye : Game data
    KYS = SourceOffSite : Server Keys