- DECLARE_SCHEME_CALLBACK (x_aligned_side, (SCM element));
- DECLARE_SCHEME_CALLBACK (y_aligned_side, (SCM element));
+ DECLARE_SCHEME_CALLBACK (pure_y_aligned_on_support_refpoints, (SCM element, SCM start, SCM end));
+ DECLARE_SCHEME_CALLBACK (x_aligned_side, (SCM element, SCM current));
+ DECLARE_SCHEME_CALLBACK (y_aligned_side, (SCM element, SCM current));
+ DECLARE_SCHEME_CALLBACK (pure_y_aligned_side, (SCM element, SCM start, SCM end, SCM current));
+ DECLARE_SCHEME_CALLBACK (calc_cross_staff, (SCM element));