{
{    The purpose of this request is to clear a previously acquired exclusive
{ access to the specified global socket.  This request is intended soley for
{ use by condition handlers where it may not be known if a previously acquired
{ exclusive access has been released.
{
{       NLP$UDP_CLEAR_EXCLUSIVE_ACCESS (GLOBAL_SOCKET)
{
{  GLOBAL_SOCKET: (input, output)  This parameter specifies the global socket
{        from which access is to be cleared -- on output the value is NIL.
{
