ADD_ACKNOWLEDGER (Glissando_engraver, rhythmic_head);
ADD_TRANSLATOR (Glissando_engraver,
/* doc */ "Engrave a glissandi",
/* create */ "Glissando",
ADD_ACKNOWLEDGER (Glissando_engraver, rhythmic_head);
ADD_TRANSLATOR (Glissando_engraver,
/* doc */ "Engrave a glissandi",
/* create */ "Glissando",