{    The purpose of this request is to wait for one or more events to occur.
{
{       OSP$I_AWAIT_ACTIVITY_COMPLETION (WAIT_LIST, READY_INDEX, STATUS);
{
{ WAIT_LIST: (input)  This is a list of events that the requesting process is
{       interested in.
{
{ READY_INDEX: (output)  This indicates the index in the wait list of the event
{       that occurred.  If status is abnormal the value of this parameter is
{       undefined.
{
{ STATUS: (output) This is the status of the request.
{      CONDITIONS:
{            none.
