(form "01315"
    (size 45 8)
    (help "01315_TIP_0")
    (heading "SMOOTH STRINGS"
    )
    (label 
        (position  2 3)
        (text "String range" 
        )
    )
    (field "string_rng" 
        (position 20 3) 
        (display_length 20)
        (max_length 32)
        (input allowed)
        (null allowed)
        (translate upper)
        (format range)
        (help "01315_TIP_1")
    )
    (label 
         (position  2 4)
         (text "Segment range" 
        )
    )
    (field "segment_rng" 
         (position 20 4)
         (display_length 20)
         (input allowed)
         (null allowed)
         (format range)
         (translate upper)
         (max_length 32)
         (help "01315_TIP_2")
    )
    (label 
         (position  2 5)
         (text "Number of lines per segment" 
         )
    )
    (field "number_lines" 
         (position 25 5)
         (display_length 5)
         (max_length 5)
         (input allowed)
         (null disallowed)
         (format integer_4)
         (low_bound 1)
         (high_bound 10)
         (default "3")
         (help "01315_TIP_3")
    )
    (label 
          (position  2 6)
          (text "(S)pline or (I)nterpolation smoothing"
          )
    )
    (field "smooth" 
         (position 30 6)
         (display_length  1) 
         (input allowed)
         (value_in "S" "I")
         (translate upper)
         (null disallowed) 
         (max_length 1)
    )
    
    (default_buttons)
)