chromium/third_party/blink/web_tests/wpt_internal/css/css-text-decor/text-decoration-line-spelling-error-001-ref.html

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<title>CSS Text Decoration Test: Reference</title>
<link rel="author" title="Manuel Rego Casasnovas" href="mailto:[email protected]">
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<p>The test passes if "quikc" has a spelling error marker that looks like the default spelling error marker.</p>
<div>The <span id="target">quikc</span> brown fox.</div>

<script>
  addSpellingMarker(target, 0, 5);
</script>