ULONG PerformAction (PCHAR WR Out, ULONG Len, PCHAR Arg, ULONG Rq_flags)
{
  ULONG Result = SysPerformAction (Out, Len, Arg, Rq_flags);

  if (Result == NO_ERROR)
  {
    PrintString ("All done.\n");
  }
  else 
  {
    HandleError (Result);
  }

  return Result;
}