(form "12021" (size 62 15)
  (help "12021_TIP_0")
  (heading "SELECT DRILL HOLE LAYER")
  (label (position  2  3) (text "Define the drill hole layers"))
  (label (position  2  4) (text "Available layers"))
  (label (position  2  5) (text "Active layer"))
  (label (position  2  6) (text "Visible layers"))
  (label (position  2  7) (text "Selectable layers"))
  (label (position  2  8) (text "Always Update Display"))
  (label (position  2  9) (text "Always Rescale Display"))

  (label (position  2  11) (text "Enter the range of layers which are to be made visible and/or selectable."))
  (label (position  2  12) (text "Any Layer which are not visible will automaticaly be unselectable."))
  (label (position  2  13) (text "NOTE: The Active Layer is always Visible and Selectable."))
  (field "available" (position 20  4) (display_length 32)
    (background) (input disallowed))
  (field "active" (position 20  5) (display_length 16) (input allowed)
    (translate upper) (format real_8) (null disallowed) (max_length 16)
    (help "12021_TIP_1"))
  (field "vis_range" (position 20  6) (display_length  20) (input allowed)
    (translate lower) (format range) (null allowed) (max_length 32)
    (help "12021_TIP_2"))
  (field "select_range" (position 20  7) (display_length  20) (input allowed)
    (translate lower) (format range) (null allowed) (max_length 32)
    (help "12021_TIP_3"))
  (field "update" (position 20  8) (display_length  3) (input allowed)
    (value_in "Yes" "No")
    (default "No")
    (null disallowed) (max_length 3)
    (help "12020_TIP_3"))
  (field "rescale" (position 20  9) (display_length  3) (input allowed)
    (value_in "Yes" "No")
    (default "Yes")
    (null disallowed) (max_length 3)
    (help "12020_TIP_4"))
  (default_buttons)
)