(form "00081" (size 63  8)
  (heading "DIGITISER SCALE")
  (label (position  2  3) 
         (text "The accuracy of this distance will determine the displayed"))
  (label (position  2  4) 
         (text "transformation scales. This DOES NOT affect the"))
  (label (position  2  5) (text "transformation of coordinates."))
  (label (position  2  6) (text "Distance between points"))
  (field "units" (position 32  6) (display_length  6)
    (background) (input disallowed))
  (field "distance" (position 24  6) (display_length  6) (input allowed)
    (translate upper) (format real_8) (null disallowed) (max_length 6)
    (help "00081_TIP_0"))
  (default_buttons)
)