{
{    The purpose of this request is to terminate access to a previously opened
{ service access point.  Any datagrams sent to this service access point which
{ have arrived at the local system and have not been delivered will be
{ discarded.
{
{       NAP$CLOSE_NETWORK_SAP (SAP, STATUS)
{
{ SAP: (input)  This parameter specifies an open service access point to be
{       closed.
{
{ STATUS: (output) This parameter specifies the request status.
{       CONDITIONS:
{             nae$sap_not_open
{       IDENTIFIER: 'NA'
{
