{
{   The purpose of this request is to transfer a program variable to form
{ storage.  Form storage holds the values Screen Formatting uses to update the
{ screen or to return to a program.
{
{       FDP$REPLACE_STRING_VARIABLE (FORM_IDENTIFIER, NAME, OCCURRENCE,
{         VARIABLE, VARIABLE_STATUS, STATUS)
{
{ FORM_IDENTIFIER: (input)  This parameter specifies the form identifier for
{       the instance of the form.
{
{ NAME: (input)  This parameter specifies the name of the variable.
{
{ OCCURRENCE: (input)  This parameter specifies the occurrence of the variable
{       name.
{
{ VARIABLE: (input)  This parameter specifies the string variable.
{
{ VARIABLE_STATUS: (output)  This parameter specifies the ordinal which gives
{       the status of the variable.
{
{      value:  fdc$invalid_string
{              fdc$no_error
{
{ STATUS: (output) This parameter specifies  the name of the variable to set to
{       indicate the status of the request.
{
{      condition identifiers: fde$bad_data_value
{                             fde$form_pushed
{                             fde$invalid_form_identifier
{                             fde$system_error
{                             fde$unknown_occurrence
{                             fde$unknown_variable_name
{
