-#include "score-element.hh"
-
-struct Directional_element_interface
-{
-
-public:
- Score_element *elt_l_;
-
- Directional_element_interface (Score_element const *);
- void set (Direction d);
- Direction get () const;
- bool has_interface_b () const;
- // bool set_interface ();
-};