- Grob *get_vertical_alignment ();
- Grob *get_extremal_staff (Direction dir, Interval const&);
+ Grob *get_extremal_staff (Direction dir, Interval const &);
+ Grob *get_neighboring_staff (Direction dir, Grob *vertical_axis_group, Interval_t<int> bounds);
+ Grob *get_pure_bound (Direction dir, int start, int end);
+ Grob *get_maybe_pure_bound (Direction dir, bool pure, int start, int end);