((output
  (((f.ml (1 0) (1 4))
    (paragraph (((f.ml (1 0) (1 3)) (word foo)) ((f.ml (1 3) (1 4)) space))))
   ((f.ml (1 4) (1 11))
    (2
     (label
      ((root (f.ml (page f.ml) 00000000000000000000000000000000) f.ml)
       (label bar)))
     (((f.ml (1 7) (1 10)) (word Bar)))))))
 (warnings
  ( "File \"f.ml\", line 1, characters 4-6:\
   \n'{2 ...}' (section heading) should begin on its own line.")))
