{
{   The purpose of this request is to process signals sent from one task to
{ another in the same job by the NOS/VE SCL interpreter.
{
{       CLP$SIGNAL_HANDLER (ORIGINATOR, SIGNAL)
{
{ ORIGINATOR: (input)  This parameter specifies the sender of the signal.
{
{ SIGNAL: (input)  This parameter specifies the received signal.  The only
{       signal identifier expected by this handler is CLC$SCL_SIGNAL.  The
{       signal is described by CLT$SCL_SIGNAL_CONTENTS which defines the
{       following kinds of signals (currently only one):
{
{       CLC$SIGNAL_EXITING:  This signal is used in the processing of the SCL
{             EXIT statement when the target block of the EXIT belongs to an
{             ancester of the task issuing the EXIT statement.
{
{             CHILD_TASK_ID:  This field identifies the recipient task's child
{                   task, which must be terminated.
{
{             EXIT_CONTROL_BLOCK:  This field identifies the block whose
{                   corresponding condition handler is responsible for
{                   completing the EXIT.
{
