syntax-text" id="syntax-text_xref1">text</a>, in some cases in combination with
    <a href="syntax.html#syntax-charref" id="syntax-charref_xref2">character references</a>,
    along with certain additional restrictions. There are three
    types of character data that can occur in documents:</p>
    <ol>
<li><a href="syntax.html#normal-character-data" id="normal-character-data_xref4">normal character data</a></li>
      <li><a href="syntax.html#replaceable-character-data" id="replaceable-character-data_xre