(form "00151" (size 53  6)
  (help "00151_TIP_0")
  (heading "INTERSECT STRINGS WITH HORIZONTAL PLANE")
  (label (position  2  3) (text "String range"))
  (label (position  2  4) (text "Z values of the planes"
                           ))
  (field "str_range" (position 16  3) (display_length 32) (input allowed)
    (format range) (null disallowed) (max_length 32)
    (help "00151_TIP_1"))
  (field "zval_plane" (position 16  4) (display_length 16) (input allowed)
    (translate upper) (format range) (null disallowed) (max_length 16)
    (help "00151_TIP_2"))
  (default_buttons)
)