DECLARE_SCHEME_CALLBACK (print, (SCM));
DECLARE_SCHEME_CALLBACK (calc_beaming, (SCM));
DECLARE_SCHEME_CALLBACK (calc_stem_shorten, (SCM));
DECLARE_SCHEME_CALLBACK (calc_direction, (SCM));
DECLARE_SCHEME_CALLBACK (calc_positions, (SCM));
DECLARE_SCHEME_CALLBACK (print, (SCM));
DECLARE_SCHEME_CALLBACK (calc_beaming, (SCM));
DECLARE_SCHEME_CALLBACK (calc_stem_shorten, (SCM));
DECLARE_SCHEME_CALLBACK (calc_direction, (SCM));
DECLARE_SCHEME_CALLBACK (calc_positions, (SCM));