ADD_ACKNOWLEDGER (Vaticana_ligature_engraver, rest);
ADD_ACKNOWLEDGER (Vaticana_ligature_engraver, note_head);
ADD_TRANSLATOR (Vaticana_ligature_engraver,
ADD_ACKNOWLEDGER (Vaticana_ligature_engraver, rest);
ADD_ACKNOWLEDGER (Vaticana_ligature_engraver, note_head);
ADD_TRANSLATOR (Vaticana_ligature_engraver,