How can I trim headers and footers off content to be scraped/rewritten in a channel?

I would like to obtain the raw html code after the rewriting functionality has already taken place to manipulate the HTML code. Basically removing the fluff at the top and bottom. In this way, I can include a subset of the HTML page, rewritten in a channel. Is there an API call to the gateway to request a URL and get the returned rewritten HTML back? If not, there should be.

[391 byte] By [708862] at [2007-11-25 4:34:05]