(form "21403" (size 63 20)
    (heading "EXPORT WHITTLE FILE")

    (label
        (position 2 3)
        (text "Whittle file type")
    )

    (field "file_type"
        (position 17 3)
        (display_length 15)

        (input allowed)
        (value_in "D" "X" "T")
        (default "X")
    )
    (default_buttons)
)