<div class="features">final</div>
        </section>
        <section class="desc markdown">
          <p>The tag that identifies the effect of this feature.  Must consist of 4
ASCII characters (typically lowercase letters).</p>
<p>See <a href="https://docs.microsoft.com/en-us/typography/opentype/spec/featuretags">docs.microsoft.com/en-us/typography/opentype/spec/featuretags</a></p>
        </section>
                <section class="summary source-code" id="source">
          <h2><span>Implementation</span>