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chromium/content/test/data/accessibility/mac/attributed-string/deletion.html 

<!--
@SCRIPT:
  tr_deletion:= deletion.AXTextMarkerRangeForUIElement(deletion)
  deletion.accessibilityAttributeValue(AXAttributedStringForTextMarkerRange, tr_deletion)
-->
<!DOCTYPE html>
<div role="deletion" id="deletion">Deleted Text</div>