r data.
        Replaceable character data can contain the following:</p>
        <ul>
<li>
<a href="syntax.html#syntax-text" id="syntax-text_xref3">text</a>,
          optionally including
          "<code title="U+003C LESS-THAN SIGN">&lt;</code>"
          characters
          
          
          </li>
          <li><a href="syntax.html#syntax-charref" id="syntax-charref_xref4">character references</a></li>
        </ul>
<p>Replaceable character data has the following restrictions:</p>
        <ul>
<li