I have noticed since I upgraded to Dreamweaver CS4 that many of my pages have been acquiring new

content=

tags in various places.

I haven't worked out when this is happening all of the time, but seems to occur sometimes when editing the description meta tag.

For example, I just opened a page and edited the description meta tag with the words "This is an informative page". After doing this I noticed that a line of text in my code had changed from:

<p class="examplecsstyle">Some text</p>

to:

<p class="examplecsstyle" content="This is an informative page">Some text</p>

This is not typing a mistake on my part and is also not a one off – it has happened to dozens of my files. However, it is only today that I have picked this up as occurring when dealing with the description meta tag.

My question is, is this a bug, or am I missing some new feature? I.E. Is there a legitimate use of this tag in this way, within a webpage. If so, is there a preference to switch off this behaviour?