static Molecule accordion (SCM arg, Real interline_f, Font_metric*fm);
static Molecule frame (Box b, Real thick);
static Molecule slur (Bezier controls, Real cthick, Real thick) ;
+ static Molecule bezier_sandwich (Bezier, Bezier);
+ static Molecule horizontal_slope (Real, Real, Real);
static Molecule beam (Real, Real, Real) ;
static Molecule dashed_slur (Bezier, Real thick, Real dash) ;
static Molecule blank (Box b) ;