{
{   The purpose of this request is to terminate shadowing of files.
{   o If required (UPDATE parameter set to true), a request will be issued to
{   update
{     the PASSIVE file with the ACTIVE .
{   o A request to mmp$terminate_shadowing_r1 will be issued to destroy the
{   ACTIVE
{     file and to activate the PASSIVE file again.
{
{       MMP$TERMINATE_SHADOWING (POINTER, UPDATE, STATUS)
{
{ POINTER: (input) This parameter specifies the process virtual
{       address assigned to the ACTIVE segment.
{
{ UPDATE: (input) This boolean parameter specifies if an update
{       (PASSIVE with ACTIVE)  is required or not.
{
{ STATUS: (output) This parameter specifies the request status.
{
