static void set_interface (Grob*);
static void do_measure (Grob*,Link_array<Grob> const &) ;
static void stretch_to_regularity (Grob*, Array<Spring> *, Link_array<Grob> const &);
+ static void breakable_column_spacing (Item* l, Item *r);
DECLARE_SCHEME_CALLBACK (set_springs, (SCM ));
static Real stem_dir_correction (Grob*,Grob*,Grob*) ;
static Real default_bar_spacing (Grob*,Grob*,Grob*,Moment) ;