{
{   The purpose of this request is to delete the previous mark established by
{ the fdp$create_mark request.  This request may only be used on a form
{ created with the fdp$create_design_form request.
{
{       FDP$DELETE_MARK (FORM_IDENTIFIER, STATUS)
{
{ FORM_IDENTIFIER: (input)  This parameter specifies the form identifier.
{
{ STATUS: (output) This parameter specifies the name of the variable to set to
{       indicate the status of the request.
{
{       condition identifiers: fde$bad_data_value
{                              fde$delete_mark_invalid
{                              fde$form_not_scheduled
{                              fde$form_pushed
{                              fde$invalid_form_identifier
{                              fde$no_space_available
{                              fde$system_error
{
