{
{   The purpose of this request is to release the system resources used to
{ process a form.  The request also deletes the form from the current list of
{ forms scheduled for display.  If the form is displayed when you use this
{ request, the next request that updates the screen, fdp$xshow_forms or
{ fdp$xread_forms, will remove the form from the terminal screen.  A form that
{ is currently pushed cannot be closed.
{
{       FDP$XCLOSE_FORM (FORM_IDENTIFIER, STATUS)
{
{ FORM_IDENTIFIER: (input)  This parameter specifies the form to close from
{       the list of forms.
{
{ STATUS: (output)  This parameter specifies the name of the variable to set
{       to indicate the status of the request.
{
{       condition_identifiers:  fde$bad_data_value
{                               fde$form_pushed
{                               fde$invalid_form_identifier
{                               fde$no_space_available
{
