-multi-measure-rest is a Spanner, minimum distances are set to keep it
-colliding from barlines.
-";
+multi-measure-rest is a Spanner, minimum distances are set to stop it
+colliding with bar lines.
+
+Rests over measures lasting longer than 2 wholes use breve rests. When
+more than 10 measures (tunable through @code{expand-limit}) are used
+then a different symbol is used.
+"