static Array<int> note_head_positions (Grob *);
static int duration_log (Grob *);
static void set_beaming (Grob *, int, Direction d);
+ static int get_beaming (Grob *, Direction d);
static Grob *get_beam (Grob *);
static Grob *first_head (Grob *);
static Grob *last_head (Grob *);