-ENTER_DESCRIPTION (Chord_tremolo_engraver,
-/* descr */ "Generates beams for tremolo repeats.",
-/* creats*/ "Beam",
-/* accepts */ "repeated-music",
-/* acks */ "stem-interface note-head-interface",
-/* reads */ "",
-/* write */ "");
+ADD_ACKNOWLEDGER (Chord_tremolo_engraver, stem);
+ADD_TRANSLATOR (Chord_tremolo_engraver,
+ /* doc */ "Generates beams for tremolo repeats.",
+ /* create */ "Beam",
+ /* accept */ "repeated-music",
+ /* read */ "",
+ /* write */ "");