{
{   The purpose of this request is to close the file opened for a display.  If
{ any data has not yet been written to the display, e.g.  via
{ clp$put_partial_display requests, that data is written prior to closing the
{ file.
{
{       CLP$CLOSE_DISPLAY (DISPLAY_CONTROL, STATUS)
{
{ DISPLAY_CONTROL: (input, output)  This parameter specifies the
{       display_control variable initialized when the display was opened.
{
{ STATUS: (output)  This parameter specifies the request status.
{
