-see @ref{Chorded notes}. A triple or quadruple stop might be
-indicated by a square bracket to indicate the notes should be
-played simultaneously rather than arpeggiated. A square bracket
-is also used to indicate the two notes of a double stop should be
-played divisi by the two players on the stand. A bracket arpeggio
-can be used to bracket notes together, see @ref{Arpeggio}.
-
-@item For passages which require two voices see @rlearning{I'm
-hearing Voices} and @ref{Single-staff polyphony}.
+see @ref{Chorded notes}. Directives for playing chords may be
+added, see @ref{Arpeggio}.