{
{ This request is used by system tasks that voluntarily idle during system
{ idle-down.
{ This request will suspend task execution until the system is resumed
{ (restart after
{ IDLE).  If no idle-down is active, this procedure returns immediately.  This
{ request
{ also causes the system job monitor to be notified that the task is in an
{ IDLE state
{ and that system idle-down does not need to wait for the task.
{
{     SYP$WAIT_SYSTEM_RESUME;
{
{     (no parameters)
{
