+\header{
+texidoc="
+Chord tremolos look like beams, but are a kind of repeat symbol.
+To avoid confusion, chord tremolo beams do not reach the stems, but
+leave a gap. Chord tremolo beams on half notes are not ambiguous,
+as half notes cannot appear in a regular beam, and should reach the
+stems.
+";
+}
+
\score {
\context Voice \notes\relative c {
\repeat "tremolo" 8 { c16 d16 }