older with the baseline.</p>
<p>The <a href="dart-ui/TextBaseline-class.html">TextBaseline</a> to use must be specified and non-null when using this
alignment mode.</p>
                  
  <div>
            <span class="signature"><code>const PlaceholderAlignment(0)</code></span>
          </div>
        </dd>
        <dt id="belowBaseline" class="constant">
          <span class="name ">belowBaseline</span>
          <span class="signature">&#8594; const <a href="dart-ui/PlaceholderAlignment-class.html">P