// todo: move to somewhere else.
Real get_broken_left_end_align () const;
void substitute_one_mutable_property (SCM sym, SCM val);
bool fast_substitute_grob_array (SCM sym, Grob_array *);
// todo: move to somewhere else.
Real get_broken_left_end_align () const;
void substitute_one_mutable_property (SCM sym, SCM val);
bool fast_substitute_grob_array (SCM sym, Grob_array *);