(form "00651" (size 60 9)
  (heading "TRIANGULATE MANY SEGMENTS OPTIONS")

  (label (position  2 5) 
    (text "Do you wish to close both ends of the trisolation to create a 3DM?"))

 (field "theopt1" (position 54  5) (display_length  1) (input allowed)
    (value_in "Y" "N")
    (default "N") (translate upper) (null disallowed) (max_length 1)
    )
  (label (position  2 3) 
  (text "Do you wish to use Manual or Range selection for the segments?"))

 (field "theopt2" (position 54  3) (display_length  1) (input allowed)
    (value_in "M" "R")
    (default "M") (translate upper) (null disallowed) (max_length 1)
    )

 (field "theopt3_label" 
    (position 2  6) 
    (display_length  47) 
    (foreground (user_option "form_foreground"))
    (background (user_option "form_background"))
    (input disallowed)
    (value_in "Do you wish to create a Solid or a Void?")
    (browser none)
    (default "Do you wish to create a solid or a void?")
    (dependency (value "theopt1") == "Y") 
 )
 
 (field "theopt3" (position 54  6) (display_length  1) (input allowed)
    (value_in "S" "V" )
    (default "S") (dependency (value "theopt1") == "Y") 
    (translate upper) (null disallowed) (max_length 1)
    )
  (default_buttons)
)