<legend>accesskey="Character"At least one of the following elements must appear.
<optgroup>disabled="disabled"label="Text" must appearAt least one of the following element must appear.
<option>disabled="disabled"label="Text"selected="selected"value="Text"<html>; <head>, <title>, <base>, <link>, <meta>, <script>, <style>; <body><h1>, <h2>, <h3>, <h4>, <h5>, <h6><address>, <blockquote>; <del>, <ins>; <div>, <fieldset>, <form>, <hr>, <noscript>, <p>, <pre>, <script>, <table><dl>, <ol>, <ul>; <dt>, <dd>, <li><a>; <abbr>, <acronym>, <cite>, <code>, <dfn>, <em>, <kbd>, <samp>, <strong>, <var>; <b>, <big>, <i>, <small>, <sub>, <sup>, <tt>; <bdo>, <br>, <button>; <del>, <ins>; <img>, <input>, <label>, <map>, <noscript>, <object>, <q>, <ruby>, <select>, <script>, <span>, <textarea><caption>, <col>, <colgroup>; <thead>, <tbody>, <tfoot>; <td>, <th>, <tr><legend>, <optgroup>, <option><area><param><rb>, <rbc>, <rp>, <rt>, <rtc><!-- -->)