- void set_music (SCM music, SCM parser);
- SCM book_rendering (String, Output_def *, Output_def *, Object_key *);
+ void add_output_def (Output_def *def);
+ void set_music (SCM music);
+ SCM book_rendering (Output_def *, Output_def *);
+ SCM get_header () const;
+ void set_header (SCM module);