static Molecule ledger_line (Interval, Grob*) ;
DECLARE_SCHEME_CALLBACK (brew_ez_molecule, (SCM ));
static bool has_interface (Grob*);
static Molecule ledger_line (Interval, Grob*) ;
DECLARE_SCHEME_CALLBACK (brew_ez_molecule, (SCM ));
static bool has_interface (Grob*);