title: What is the meaning of the 'aria-describedby' property?
body: <p>The following HTML is inserted by the jQuery Grid plugin:</p>
  
  <pre><code>&lt;td role="gridcell" style="" aria-describedby="list_createdBy"&gt;Sam&lt;/td&gt;
  </code></pre>
  
  <p>What is the meaning of the 'aria-describedby' property?</p>