<span class="signature">&#8594; const <a href="dart-io/FileMode-class.html">FileMode</a></span>
                  </dt>
        <dd>
          Mode for opening a file for writing <em>only</em> to the
end of it. The file is created if it does not already exist.
                  
  <div>
            <span class="signature"><code>const FileMode._internal(4)</code></span>
          </div>
        </dd>
      </dl>
    </section>

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