(form "00093" (size 46  7)
  (heading "REBUILD TRIANGLE NEIGHBOUR LIST")
  (label (position  4  3) (text "Define the DTM to be rebuilt"))
  (label (position  4  4) (text "Location"))
  (label (position  4  5) (text "ID number"))
  (field "dtmloc" (position 15  4) (display_length 26) (input allowed)
    (null allowed) (max_length 26)
    (file (link "dtmid") (extension "*.dtm")))
  (field "dtmid" (position 15  5) (display_length 16) (input allowed)
    (translate upper) (format real_8) (null disallowed) (max_length 16))
  (default_buttons)
)