static bool has_interface (Grob*);
DECLARE_SCHEME_CALLBACK (aligned_on_self, (SCM element, SCM axis));
DECLARE_SCHEME_CALLBACK (centered_on_parent, (SCM element, SCM axis));
+ DECLARE_SCHEME_CALLBACK (aligned_on_parent, (SCM element, SCM axis));
DECLARE_SCHEME_CALLBACK (centered_on_other_axis_parent, (SCM element, SCM axis));
};
#endif