MusicXML 4.1 Draft
MusicXML 4.1 Draft > MusicXML Reference > Examples > <inversion>

<inversion>

inversion-element

<harmony default-y="-80">
   <numeral>
      <numeral-root text="IV">4</numeral-root>
   </numeral>
   <kind>major</kind>
   <inversion>1</inversion>
</harmony>