Int 67 Fn 52  - LIM EMS 4.0 - Get/set Handle Attributes                    [m]

   AH = 52h
   AL = subfunction
       00h get handle attributes

       Return: AL = attribute
               00h handle is volatile
               01h handle is nonvolatile
       01h set handle attributes
       BL = new attribute (see returned AL)
       02h get attribute capability

       Return: AL = attribute capability
               00h only volatile handles supported
               01h both volatile and non-volatile supported
   DX = handle

Return: AH = status (00h,80h,81h,83h,84h,8Fh-91h) (see AH=51h)

See Also: AH=53h