enum {
   NSFileNoSuchFileError  = 4,
   NSFileLockingError  = 255,
   NSFileReadUnknownError  = 256,
   NSFileReadNoPermissionError  = 257,
   NSFileReadInvalidFileNameError  = 258,
   NSFileReadCorruptFileError  = 259,
   NSFileReadNoSuchFileError  = 260,
   NSFileReadInapplicableStringEncodingError  = 261,
   NSFileReadUnsupportedSchemeError  = 262,
   NSFileReadTooLargeError  = 263,
   NSFileReadUnknownStringEncodingError  = 264,
   NSFileWriteUnknownError  = 512,
   NSFileWriteNoPermissionError  = 513,
   NSFileWriteInvalidFileNameError  = 514,
   NSFileWriteFileExistsError  = 516,
   NSFileWriteInapplicableStringEncodingError  = 517,
   NSFileWriteUnsupportedSchemeError  = 518,
   NSFileWriteOutOfSpaceError  = 640,
   NSFileWriteVolumeReadOnlyError  = 642,
   NSKeyValueValidationError  = 1024,
   NSFormattingError  = 2048,
   NSUserCancelledError  = 3072,

   NSFileErrorMinimum  = 0,
   NSFileErrorMaximum  = 1023,
   NSValidationErrorMinimum  = 1024,
   NSValidationErrorMaximum  = 2047,
   NSFormattingErrorMinimum  = 2048,
   NSFormattingErrorMaximum  = 2559,

   NSPropertyListReadCorruptError  = 3840,
   NSPropertyListReadUnknownVersionError  = 3841,
   NSPropertyListReadStreamError  = 3842,
   NSPropertyListWriteStreamError  = 3851,
   NSPropertyListErrorMinimum  = 3840,
   NSPropertyListErrorMaximum  = 4095

   NSExecutableErrorMinimum  = 3584,
   NSExecutableNotLoadableError  = 3584,
   NSExecutableArchitectureMismatchError  = 3585,
   NSExecutableRuntimeMismatchError  = 3586,
   NSExecutableLoadError  = 3587,
   NSExecutableLinkError  = 3588,
   NSExecutableErrorMaximum  = 3839,

}