CDATA

<![CDATA[……]]> denotes a section of character data. This is used to escape blocks of text containing characters that would otherwise be recognized as markup. In the example in Markup Components, <old_price> is recognized as character data, not markup. CDATA sections can contain the < and & literals. They cannot be nested.

<?xml version="1.0" encoding="UTF-8"?>
<description>
   <![CDATA[<old_price>30.00</old_price>]]>
</description>