((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 (1 8) (1 19)) (@author Bar))))
 (warnings
  ( "File \"f.ml\", line 1, characters 8-19:\
   \n'@author' should begin on its own line.")))
