$st{ 'UpdDoc' } = $dbh->prepare( <<ENDSQL );
UPDATE
  img_Printer_Doc
SET
  prd_Copies    = ?,
  prd_Tray      = ?,
  prd_Size      = ?,
  prd_Duplex    = ?,
  prd_NUp       = ?,
  prd_Landscape = ?,
  prd_Scaling   = ?,
  prd_Redirect  = ?
WHERE
  prt_Number = ?
AND
  ref_IndexCode = ?;
ENDSQL