<p>Regions in different tracks are considered to be equivalent for the purposes of sharing "selection" if they satisfy all the following criteria:</p>
<ol>
<li>Each region starts at the same offset within its source file</li>
<li>Each region is located at the same position on the timeline</li>
<li>Each region has the same length</li>
</ol>
<p>Regions in different tracks are considered to be equivalent for the purposes of sharing "selection" if they satisfy all the following criteria:</p>
<ol>
<li>Each region starts at the same offset within its source file</li>
<li>Each region is located at the same position on the timeline</li>
<li>Each region has the same length</li>
</ol>