CONST OTERR_Failure=-1,
    OTERR_Success=0,
    OTERR_BadTag=1,
    OTERR_UnknownTag=2,
    OTERR_BadData=3,
    OTERR_NoMemory=4,
    OTERR_NoFace=5,
    OTERR_BadFace=6,
    OTERR_NoGlyph=7,
    OTERR_BadGlyph=8,
    OTERR_NoShear=9,
    OTERR_NoRotate=10,
    OTERR_TooSmall=11,
    OTERR_UnknownGlyph=12
