<!-- in a <style> declaration - What are it's different uses and meanings? [duplicate]

Question

Possible Duplicate:
Commenting out stylesheets in HTML documents to support older browsers

I'm trying to understand the purpose for the comment when doing certain types of styling. I have seen it before in instances of IE conditional styling.

Here is one I saw this morning:

<style tyle="text/css">
<!--
@page { size:8.5in 11in; margin: 2cm }
-->
</style>

What purpose does this serve here, and also when is the other uses for this, and when are they appropriate. Does CSS not read the comment, or does it mean something completely different in CSS?

Answer 1

It is a HTML comment as intended to ensure backwards compatible with "ancient browsers" that don't support CSS.

Don't bother with it!