(form "00147" (size 70 16)
  (heading "VARIOGRAM MODEL")
  (label (position  1  3) (text "Define the variogram model"))
  (label (position  1  4) (text "SPH = Spherical"))
  (label (position  1  5) (text "NSP = Nested Spherical"))
  (label (position 26  4) (text "EXP = Exponential"))
  (label (position 45  4) (text "Power for Inverse distance"))
  (label (position  2  7) (text "Number of structures"))
  (label (position  2  9) (text "Nugget (Co)"))
  (label (position 19  9) (text "#"))
  (label (position 27  9) (text "C(#)"))
  (label (position 47  9) (text "Range (A(#))"))
  (label (position 19 10) (text "1"))
  (label (position 19 11) (text "2"))
  (label (position 19 12) (text "3"))
  (label (position 19 13) (text "4"))
  (label (position 19 14) (text "5"))
  (field "vg_model_file_name" (position 27 2) (display_length 32) 
        (input allowed)(file (extension "*.vgm,*.not"))
        (translate none)(null allowed)(max_length 256))
  (field "model" (position 27  3) (display_length  3) (input allowed)
    (value_in "SPH" "NSP" "EXP" "INV" "GAU" "HOL")
    (null allowed) (max_length 3))
  (field "power" (position 52  5) (display_length  5) (input allowed)
    (dependency (value "model") == "INV")
    (translate upper) (format real_8) (null disallowed) (max_length 5)
    )
  (field "nested_gh" (position 27  7) (display_length  2) (input allowed)
    (low_bound 1) (high_bound 5)
    (default "1")
    (format integer_4) (null disallowed) (max_length 2)
    )
  (field "co" (position  3 10) (display_length 10) (input allowed)
    (translate upper) (format real_8) (decimals 6) (null disallowed) (max_length 20)
    )
  (field "c1" (position 27 10) (display_length 10) (input allowed)
    (translate upper) (format real_8) (decimals 6) (null disallowed) (max_length 20)
    )
   (field "a1" (position 47 10) (display_length 14) (input allowed)
    (translate upper) (format real_8) (null disallowed) (max_length 14)
    )
  (field "c2" (position 27 11) (display_length 10) (input allowed)
    (translate upper) (format real_8) (decimals 6) (max_length 20)
    )
  (field "a2" (position 47 11) (display_length 14) (input allowed)
    (translate upper) (format real_8) (max_length 14)
    )
  (field "c3" (position 27 12) (display_length 10) (input allowed)
    (translate upper) (format real_8) (decimals 6) (max_length 20)
    (help (field "c2")))
  (field "a3" (position 47 12) (display_length 14) (input allowed)
    (translate upper) (format real_8) (max_length 14)
    (help (field "a2")))
  (field "c4" (position 27 13) (display_length 10) (input allowed)
    (translate upper) (format real_8) (decimals 6) (max_length 20)
    (help (field "c2")))
  (field "a4" (position 47 13) (display_length 14) (input allowed)
    (translate upper) (format real_8) (max_length 14)
    (help (field "a2")))
  (field "c5" (position 27 14) (display_length 10) (input allowed)
    (translate upper) (format real_8) (decimals 6) (max_length 20)
    (help (field "c2")))
  (field "a5" (position 47 14) (display_length 14) (input allowed)
    (translate upper) (format real_8) (decimals 6) (max_length 14)
    (help (field "a2")))
  (default_buttons)
)