((output
  (((f.ml (1 0) (1 3))
    (paragraph
     (((f.ml (1 0) (1 1)) (word {)) ((f.ml (1 1) (1 3)) (word gg)))))))
 (warnings
  ( "File \"f.ml\", line 1, characters 0-1:\
   \n'{': bad markup.\
   \nSuggestion: escape the brace with '\\{'.")))
