(form "00039" (size 59  9)
  (help "00039_TIP_0")
  (heading "CLASSIFY STRINGS BY A SELECTED FIELD")
  (label (position  2  3) (text "Classification group number"))
  (label (position  2  4) (text "Input string range"))
  (label (position  2  5) (text "Output string range"))
  (label (position  2  6) (text "Classify by se(G)ment or (P)oint"))
  (label (position  2  7) (text "Classify on which field"))
  (field "iclass" (position 28  3) (display_length  3) (input disallowed))
  (field "instrings" (position 22  4) (display_length 32) (input allowed)
    (format range) (null disallowed) (max_length 32)
    (help "00039_TIP_1"))
  (field "outstrings" (position 22  5) (display_length 32) (input allowed)
    (format range) (null disallowed) (max_length 32)
    (help "00039_TIP_2"))
  (field "classify" 
    (position 34  6) (display_length  1) (input allowed)
    (value_in "G" "P")
    (translate upper) (null allowed) (max_length 1)
    (help "00039_TIP_3"))
  (field "strfield"
    (position 26  7) (display_length  4) (input allowed)
    (translate upper) (format string_field) (null disallowed) (max_length 4)
    (help "00039_TIP_4"))
  (default_buttons)
)