Int 2F Fn 1227 U - Dos 3.3+ Internal - Close File [D]
AX = 1227h
BX = file handle
SS = DOS DS (must be using a DOS internal stack)
Return: CF set on error
AL = 06h invalid file handle
CF clear if successful
Notes: can only be called from within DOS
equivalent to INT 21/AH=3Eh
used by NLSFUNC to access COUNTRY.SYS when invoked by the DOS kernel
See Also: AX=1106h,AX=1201h,AX=1226h,INT 21/AH=3Eh