Int 21 Fn 5F36  u - Named Pipes - Local DOStransactnmpipe                  [N]

   AX = 5F36h
   BX = handle
   CX = in buffer length
   DS:SI -> in buffer
   DX = out buffer length
   ES:DI -> out buffer

Return: CF clear if successful
       CX = bytes read
   CF set on error
       AX = error code

Note:  this function was introduced by LAN Manager but is also supported by
     the Novell DOS Named Pipe Extender, Banyan VINES, OS/2 Virtual DOS
     Machines, and others

See Also: AX=5F34h,AX=5F37h