Function 5F04h (95-4)    Cancel Redirection                         . DOS 3.1

    Cancels a previously established network redirection.

       On entry:      AH         5Fh
                      AL         04h
                      DS:SI      Pointer to an ASCIIZ string specifying
                                 either the local device to cancel or its
                                 associated network name.

       Returns:       AX         Error code   If CF is set

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    This function undoes a previously established network redirection
    link. DS:SI points to the name of the link to cancel, and it may
    contain a printer name (PRN, LPT1, LPT2, or LPT3), a drive designator,
    or the network name (in the last case, the ASCIIZ string should be
    followed by a second ASCIIZ string giving the password associated with
    the link).