((output
  (((f.ml (1 0) (1 7))
    (2
     (label
      ((root (f.ml (page f.ml) 00000000000000000000000000000000) f.ml)
       (label foo)))
     (((f.ml (1 3) (1 6)) (word Foo)))))
   ((f.ml (2 0) (2 7))
    (3
     (label
      ((root (f.ml (page f.ml) 00000000000000000000000000000000) f.ml)
       (label bar)))
     (((f.ml (2 3) (2 6)) (word Bar)))))))
 (warnings ()))
