MusicXML 4.1 Draft
MusicXML 4.1 Draft > MusicXML Reference > Examples > <interchangeable>

<interchangeable>

interchangeable-element

<time>
   <beats>3</beats>
   <beat-type>4</beat-type>
   <interchangeable>
      <time-relation>equals</time-relation>
      <beats>6</beats>
      <beat-type>8</beat-type>
   </interchangeable>
</time>