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  <title>acronym vs abbr</title>
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  <h1>Migrate acronym → abbr</h1>
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    <p><strong>Old (obsolete):</strong></p>
    <p>The <acronym title="World Wide Web Consortium">W3C</acronym> sets web standards.</p>
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    <p><strong>New (HTML5):</strong></p>
    <p>The <abbr title="World Wide Web Consortium">W3C</abbr> sets web standards.</p>
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  <p>Use <code>&lt;abbr&gt;</code> for new pages. Hover (or long-press) to see the title tooltip.</p>
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HTML acronym Tag — Migrate to abbr