5 Multi-measure rests do not collide with bar lines and clefs. They
6 are not expanded when you set @code{Score.skipBars}. Although the
7 multi-measure-rest is a Spanner, minimum distances are set to stop it
8 colliding with bar lines.
10 Rests over measures lasting longer than 2 wholes use breve rests. When
11 more than 10 measures (tunable through @code{expand-limit}) are used
12 then a different symbol is used.