{
{    The purpose of this procedure is to obtain the next operator action
{  menu in the list of menus which the caller is validated to display. The
{  menu list is searched from the beginning until the current_menu_id is
{  found. From that point a circular search is performed on the list until
{  the next menu for which the user is validated is found or until the
{  current menu is found again.
{
{       OFP$GET_NEXT_OPERATOR_MENU_R1 (CURRENT_MENU_ID,
{             ACTIVE_OPERATOR_CLASSES, MENU_DESCRIPTOR, STATUS)
{
{ CURRENT_MENU_ID: (input) This parameter specifies the unique identifier of
{       the menu after which the search for the next menu is to begin.
{
{ ACTIVE_OPERATOR_CLASSES: (input) This parameter specifies the set of operator
{       classes in which the caller is active.
{
{ MENU_DESCRIPTOR: (output) This parameter specifies the descriptor of the next
{       menu in the list of menus which the caller is validated to display.
{
{ STATUS: (output) This parameter specifies the status of the request.
{
{       CONDITION: ofe$no_menus_available
{                  ofe$one_menu_available
{
