The <instrument-abbreviation> element.
<instrument-abbreviation>
The optional instrument-abbreviation element is typically used within a software application, rather than appearing on the printed page of a score.
https://www.w3.org/2021/06/musicxml40/musicxml-reference/elements/instrument-abbreviation/
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The
<instrument-abbreviation>element.The optional instrument-abbreviation element is typically used within a software application, rather than appearing on the printed page of a score.
See
https://www.w3.org/2021/06/musicxml40/musicxml-reference/elements/instrument-abbreviation/