Why embed a fake comment inside an element?

Hi Folks,

I am processing a bunch of XHTML documents. Some XHTML documents contain things like this:

<style> 
   <![CDATA[
      <!-- 
          @font-face
	{font-family:"Cambria Math";
	panose-1:2 4 5 3 5 4 6 3 2 4;}
      -->
  ]]>
</style>

So, the content of the <style> element is this:
      <!-- 
          @font-face
	{font-family:"Cambria Math";
	panose-1:2 4 5 3 5 4 6 3 2 4;}
      -->

That looks like a comment, but it's not a comment, it's just a string. Right?

Question: Why would someone would do this? Is there a benefit to embedding a fake comment inside an element?

/Roger