Y = Bitmap image (subsampled raw YUV )
    Y = Compressed Amiga file archive (Yabba)
    Y = Grammar file (Unix Yacc)
    Y01 = Paradox secondary index file
    Y02 = Paradox secondary index file
    Y03 = Paradox secondary index file
    Y04 = Paradox secondary index file
    Y05 = Paradox secondary index file
    Y06 = Paradox secondary index file
    Y07 = Paradox secondary index file
    Y08 = Paradox secondary index file
    Y09 = Paradox secondary index file
    YAL = Arts & Letters clipart library
    YAODL = 3d Graphic
    YAR = YAK archiv
    YBK = Microsoft Encarta Yearbook
    YBM = Bitmap image (Face file)
    YC = YACC archive
    YCC = 2d Graphic
    YCP = Image ASCII art
    YDL = Yet Another Object Description Language (Silicon Graphics Powerflip)
    YEL = Yellow color separation. BLA (Black) CYA (Cyan), MAG (Magenta) Adobe Color Separation
    YG0 = Database Index : Paradox secondary index
    YG1 = Database Index : Paradox secondary index
    YG2 = Database Index : Paradox secondary index
    YG3 = Database Index : Paradox secondary index
    YG4 = Database Index : Paradox secondary index
    YIF = Graphics (color with lookup table)
    YM = Atari ST Audio
    YMAP = Ygnius Computer Aided Thinking File
    YN = Audio Utility Tuningwrench compressed file
    YNX = Midiprg Seqmax Seqprest compressed file
    YUV = Bitmap image (Abekas YUV SECAM or PAL file CCIR 601 1:1:1 file)
    YUV = YUV 16Bits image format
    YUV3 = Bitmap image (CCIR 601 2:1:1 file)
    YYC = Wave sapphire dist file
    YZ = Compressed file archive (YAC)
    YZ1 = Mime: application/x-yz1