INT 67H 53xxH: Get/Set Handle Name

                                                     Compatibility: EMS 4.0+ 
 Expects: AH    53H
          AL    subfn: 00H=Query handle name
                           ES:DI addr of 8-byte buffer to receive name
                       01H=Set handle attribute
                           DS:SI addr of 8-byte buffer containing name
          DX    EMM Handle (as obtained via INT 67H 4300H)
 Returns: AH    EMM status (0=successful)
          ES:DI (fn 5301H) contains current name of the handle
    Info: Named handles provide a means for separate applications to share
          information in EMS pages -- assuming both applications know the

          EMS handle names are 8 bytes long and may contain any values,
          00H-ffH.  A handle whose name is all 0s is considered to be

   Notes: Use INT 67H 54xxH to get access to a named handle.

See Also: INT 67H: EMM Services
          Extended Memory Specification (XMS)
          Interrupts and BIOS Services