INT 21 - DOS 2.25, Far East DOS 3.2+ - GET KOREAN (HANGEUL) INPUT MODE
        AX = 6302h
Return: AL = status
            00h successful
                DL = current input mode
                    00h return only full characters (clears interim flag)
                    01h return partial characters (sets interim flag)
            FFh not supported
SeeAlso: AH=07h,AH=08h,AH=0Bh,AH=63h,AX=6301h

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