static void translate_rests (Grob *me, int dy);
static Grob *first_head (Grob *me);
static Grob *get_rest (Grob *me);
static void set_stem (Grob *me, Grob *);
static void translate_rests (Grob *me, int dy);
static Grob *first_head (Grob *me);
static Grob *get_rest (Grob *me);
static void set_stem (Grob *me, Grob *);