/code>. It is useful when you
need to propagate a number of rests, perhaps not all of equal duration.
It accepts two vectorized arguments. The first is the duration of the
rest. The second is the number of times to repeat it.</p>
<p>For example, say a score has multiple tracks. During a certain period
in the score, one track goes silent and needs to be carried over with a
sequence of rests. Perhaps the instrument dropped out in the middle of a
measure and returns in the middle of another, with several full 