{
{   The purpose of this request is to detach a file from a job.
{
{       DMP$DETACH_FILE ( SYSTEM_FILE_ID, FILE_MODIFIED, FMD_MODIFIED, STATUS)
{
{ SYSTEM_FILE_ID: (input) This parameter is the principal file identifier
{       employed in device management requests.
{
{ FLUSH_PAGES: (input) Specifies whether or not to tell MM to flush pages.
{
{ FILE_MODIFIED: (output) This parameter indicates whether or not a file has
{     been modified.
{
{ FMD_MODIFIED: (output) This parameter indicates whether or not the
{       file medium descriptor has been altered.
{
{ STATUS: (output) This parameter indicates the status of the request.
{
