static bool has_rests (Grob *me);
static Grob *dot_column (Grob *me);
static Interval cross_staff_extent (Grob *me, Grob *refp);
static bool has_rests (Grob *me);
static Grob *dot_column (Grob *me);
static Interval cross_staff_extent (Grob *me, Grob *refp);