Стандартные занчения расширений файлов

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Num Sym

  .??_  Files ending in "_" are often compressed install files of the same
          name (e.g., .EX_ expands to .EXE, .DL_ expands to .DLL, etc.)
  .U    Unreal System File
        Unreal Tournament 2003 System File
  .U2   Telelogic Tau UML Model
  .U2E  Unreal Game Translation
  .U2P  Telelogic Tau UML Program Text File
  .U8   Raw Unsigned 8-Bit Audio Data
  .U96  EasyZip Temporary File
  .U98  Urdu 98 Document (Urdu text)
  .UAP  User Agent Wireless Telephony Profile
  .UAX  Unreal Audio File
        Unreal Tournament 2003 Sound
  .UB   Audio File
        Raw Unsigned Byte (8-bit) Data
  .UBK  National Construction Estimator 32 User Costbook
  .UC   Unreal Tournament Code File
  .UC2  Compressed File
  .UCF  Xilinx Foundation User Constraint File
  .UCM  Urban Chaos Game File
  .UCN  Compressed Archive
  .UCR  MicroSim PCBoard Unrouted Nets Report
  .UCS  Universal Classification Standard Database File
  .UDB  PINO 3-Server File
        Win2000 Uniqueness Database File (used in setup--provides 
          answers that override defaults for unattended installs)
  .UDC  Acrobat Spelling File
  .UDF  Microsoft Excel User Defined Function
        Photostyler Image Filter
  .UDL  Microsoft Data Link
  .UDS  Sierra Generations Family File (program no longer supported)
  .UDW  Raw Unsigned DoubleWord (32-bit) Data
  .UE2  Encrypted Archive
  .UEZ  Ulead COOL 3D
  .UFF  DataWave Physiological Data File
  .UFO  Ulead Object File
  .UG   Drawing File (various)
  .UH   Microsoft Age of Kings File
  .UHA  UHARC Compressed Archive  [Download Link]
  .UHS  Universal Hint System File
  .UHTM  Unreal Tournament File
  .UI   User Interface
        Geoworks UI Compiler Espire Source
  .UIF  WordPerfect Long Prompts
  .UIH  Geoworks UI Compiler Espire Header
  .UIL  X-Motif UIL Table
  .UIN  ICQ 2001+ Saved ICQ Contact Information
  .UIS  WindowBlinds Skin (changes the look and feel of WindowsXP)
  .UKX  Unreal Tournament 2003 Animation
  .UL   uLAW Audio File
  .ULD  Procomm Uploaded Files
  .ULP  Peugeot Diag 2000 File (vehicle diagnostic equipment)
  .ULS  Internet Location Service
  .ULT  UltraTracker Music Module
  .ULW  ULAW - Sun/NeXT
  .ULX  Glulx Game [Use Glulx Interpreter]
  .UM   The Land Of UM World File
  .UMB  MemMaker Backup Archive
  .UMI  CDDB Database and PC Music Library in PlayCenter
  .UMOD  Unreal Self-extracting MOD File
        Unreal Tournament
  .UMX  Unreal Music File
        Unreal Tournament 2003 Music
  .UNF  Btreive Unformatted File
  .UNI  MikMod (UniMod) Format
        Forcast Pro Data File
  .UNL  Informix Binary File Created by UNLOAD Command
  .UNQ  Fax View File (unverified)
        ACT! Saved Unknown Attachment (associated with .DET saved E-mail)
  .UNR  Unreal Map File
  .UNT  AutoCAD Unit Definition File
  .UNX  Text File (usually UNIX)
  .UNV  BusinessObjects/WebIntelligence Universe File 
          (End-user query analysis/reporting tool)
  .UOL  PhotoImpact Object Library File
  .UPD  dBase Update File
        ProUpdater Per/Directory Options Setting File
        Universal Print Driver (cross-platform)
        Updated Program Data (various)
  .UPF  Nokia Digital Photo
  .UPI  ULead Photo Impact Program File  [XnView]
  .UPJ  ULead Project File
  .UPO  dBase Compiled Update File
  .UPR  FileMaker User Spelling Dictionary
  .UPT  Connectivity Memory Model Update Timing Input File
  .UPX  ULead Photo Express Saved Image File
  .URF  Radar ViewPoint Universal Radar Format
        ProWORX Nxt User Configurable Register Editor File (Found in the NxT directory)
  .URL  Internet Location
  .URT  Utah Raster Image  [XnView]
  .USA  Unreal Saved Game File
  .USB  D-Link FM Radio Update
        USB Protocol Analyzer Trace (USBChief, USBAdvisor, USBTracer)
  .USE  MKS Source Integrity File
  .USERPROFILE  Symantec Live Update User Profile
  .USF  Core Media Player XML Universal Subtitle Format File
  .USL  LaserJet Landscape Font
        ProWORX Nxt USL Loadables (Found in the NxT directory)
  .USP  PageMaker Printer Font
        LaserJet Portrait Font
  .USR  User Database (various)
  .USX  Unreal Tournament 2003 Static Mesh
  .UT2  Unreal Tournament 2003 Map
  .UTF  AOL Updating Files (found in TOD [Tools on Demand] folder)
  .UTL  Sound File
  .UTP  BinPatch Patch Data File
  .UTX  Unreal Texture File
        Unreal Tournament 2003 Texture
        Unicode File (editor: UniPad)
  .UU   Compressed Archive File (UUENCODE)  [Tutorial]
  .UUD  Uudecoded  [Tutorial]
  .UUE  Uuencoded  [Tutorial]
  .UV2  Jane's Combat Simulations F-15
  .UVR  Ulead Cool 360 Viewer File
  .UVW  geoManager/geoInterface User View
  .UVX  Unreal Tournament 2003 Saved Game
  .UW   Audio File
        Raw Unsigned Word (16-bit) Data
        Unitype GlobalWriter File
  .UWF  UltraTracker Wave File
  .UWL  WordPerfect User Word List
  .UXX  Unreal Tournament 2003 Cache
  .UYVY  Interleaved YUV Raw Image
  .UZ   Unreal Tournament Server File (added to the normal 
          extention of any adapted UT file)
  .UZE  Ultimate Zip Compresion Agent
  .UZR  UZR 3D Streamable 3D File Format
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