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chromium/content/test/data/accessibility/html/figcaption.html 

<!--
@UIA-WIN-ALLOW:ControlType='UIA_TextControlTypeId'
-->
<!DOCTYPE html>
<html>
<body>
<figure>
  <img src="greenbox.png" alt="This is a green box.">
  <figcaption>Fig.1 - A green Box</figcaption>
</figure>

<!-- aria-details="" prevents automatic computation of details relation -->
<figure aria-details="">
  <img src="greenbox.png" alt="This is a blue box.">
  <figcaption>Fig.2 - A blue Box</figcaption>
</figure>
</body>
</html>