(form "00135" (size 50 16)
  (help "00135_TIP_0")
  (heading "GRID MATHS")
  (label (position  9  3) (text "Maths operations available"))
  (label (position  9  4) (foreground (user_option "form_text_highlight"))
     (text "="))
  (label (position  9  5) (foreground (user_option "form_text_highlight"))
     (text "+"))
  (label (position  9  6) (foreground (user_option "form_text_highlight"))
     (text "-"))
  (label (position  9  7) (foreground (user_option "form_text_highlight"))
     (text "*"))
  (label (position  9  8) (foreground (user_option "form_text_highlight"))
     (text "/"))
  (label (position  9  9) (foreground (user_option "form_text_highlight"))
     (text "L"))
  (label (position  9 10) (foreground (user_option "form_text_highlight"))
     (text "H"))
  (label (position 11  4) (text "Set grid equal to a constant"))
  (label (position 11  5) (text "Add a constant to a grid"))
  (label (position 11  6) (text "Subtract a constant from grid"))
  (label (position 11  7) (text "Multiply grid by a constant"))
  (label (position 11  8) (text "Divide grid by a constant"))
  (label (position 11  9) (text "Set grid to lower value"))
  (label (position 11 10) (text "Set grid to higher value"))
  (label (position  9 12) (text "Grid field"))
  (label (position  9 13) (text "Operation"))
  (label (position  9 14) (text "Constant"))
  (field "fld" (position 21 12) (display_length 16) (input allowed)
    (translate upper) (format string_field) (null disallowed) (max_length 16)
    (help "00135_TIP_1"))
  (field "op" (position 21 13) (display_length  1) (input allowed)
    (value_in "+" "=" "-" "*" "/" "L" "H")
    (translate upper) (null allowed) (max_length 1)
    (help "00135_TIP_2"))
  (field "value" (position 21 14) (display_length 16) (input allowed)
    (translate upper) (format real_8) (null disallowed) (max_length 16)
    (help "00135_TIP_3"))
  (default_buttons)
)