- static bool has_interface (Grob*);
- DECLARE_SCHEME_CALLBACK (beat_slash, (SCM ));
- DECLARE_SCHEME_CALLBACK (double_percent, (SCM ));
- static Molecule x_percent (Grob*,int,Real,Real );
- static Molecule brew_slash (Grob*);
+ DECLARE_GROB_INTERFACE();
+ DECLARE_SCHEME_CALLBACK (beat_slash, (SCM));
+ DECLARE_SCHEME_CALLBACK (double_percent, (SCM));
+ static Stencil x_percent (Grob *, int);
+ static Stencil brew_slash (Grob *);