INT 2F U - DOS 4.x only SHELLB.COM - COMMAND.COM interface
AX = 1903h
ES:DI -> ASCIZ batch file name as for AX=1902h
Return: AL = FFh if quoted batch file name matches last SHELLB parameter
AL = 00h if it does not


2F1903 - DOS 4.x only SHELLB.COM - COMMAND.COM interface