radiogroup" class="role-reference">radiogroup</a>.</li>
          <li>Each radio button element has role <a href="#radio" class="role-reference">radio</a>.</li>
          <li>
            If a radio button is checked, the <code>radio</code> element has <a href="#aria-checked" class="state-reference">aria-checked</a> set to <code>true</code>.
            If it is not checked, it has <a href="#aria-checked" class="state-reference">aria-checked</a> set to <code>false</code>.
          </li>
          <li>Each 