The rest element indicates notated rests or silences. Rest elements are usually empty, but placement on the staff can be specified using display-step and display-octave elements. If the measure attribute is set to yes, this indicates this is a complete measure rest.
The
<rest>element.The rest element indicates notated rests or silences. Rest elements are usually empty, but placement on the staff can be specified using display-step and display-octave elements. If the measure attribute is set to yes, this indicates this is a complete measure rest.
See
https://www.w3.org/2021/06/musicxml40/musicxml-reference/elements/rest/