File I/O: continued.

mSetFinderInfo, typeString, creatorString  set the Finder 
    info. Return error code.
mGetFinderInfo  get the finder info.
mFileName  return the name of the file.
mStatus  returns result code of the last fileIO activity.
+mError, errorCode  return error message string.
    Possible error codes: 
    -33 :: File directory full
    -34 :: Volume full
    -35 :: Volume not found
    -36 :: I/O Error
    -37 :: Bad file name
    -38 :: File not open
    -42 :: Too many files open
    -43 :: File not found
    -56 :: No such drive
    -65 :: No disk in drive
    -120 :: Directory not found