{
{    The purpose of this request is to validate a file_identifier.
{
{       FSP$VALIDATE_FILE_IDENTIFIER (FILE_IDENTIFIER, FILE_ID_IS_VALID)
{
{ FILE_IDENTIFIER: (input)  This parameter specifies the file access identifier
{       established when the file was opened.
{
{ FILE_ID_ID_VALID: (output)  A value of TRUE is returned in this parameter if
{       the file identifier is valid and a value of FALSE is returned if the
{       file identifier is invalid.
{
