INT 21 u - LAN Manager Enhanced DOS - NetHandleSetInfo
        AX = 5F3Bh
        BX = handle
        CX = handle_info_1 structure length or sizeof DWORD
        DI = parameter number to set
            0000h all
            0001h number of milliseconds
            0002h number of characters
        DS:DX -> handle_info_1 structure (DI=0000h) (see below)
                or DWORD (DI=0001h or 0002h)
        SI = level of information (0001h)
Return: CF clear if successful
            CX = total bytes available
        CF set if error
            AX = error code
SeeAlso: AX=5F3Ch

Format of handle_info_1 structure:
Offset  Size    Description
 00h    DWORD   number of milliseconds which workstation collects data before
                it sends the data to the named pipe
 04h    DWORD   number of characters which workstation collects before it
                sends the data to the named pipe

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