(form "00326" (size 46  5)
  (help "00326_TIP_0")
  (heading "SET ZOOM IN / OUT FACTOR")
  (label (position  2  3) (text "Zoom factor"))
  (field "zoom_factor" (position 18  3) (display_length 16) (input allowed)
    (low_bound 1.01) (high_bound 999999)
    (translate upper) (format real_8) (null disallowed) (max_length 16)
    (help "00326_TIP_1"))
  (default_buttons)
)