ption>
              <option value="medium">Medium</option>
              <option value="long">Long</option>
            </select>
          </div>
          <div>
            <label for="format">Format:</label>
            <select id="format">
              <option value="markdown" selected>Markdown</option>
              <option value="plain-text">Plain text</option>
            </select>
          </div>
        </fieldset>
        <div>
          <h2>Summary</h2>
          <pre id="output"></pre>
      