Forum HTML question (in General)

I don't know if I should post this here or in the Off-Topic forums? But here goes...

Does anyone know if it is possible to display the contents of a URL in the forums? In other words, just like someone displays an image with the <img> tag and the image's URL, I would like to display an HTLM document using something like the <iframe> tag and the HTML document's URL.

Is this possible?

<a href="INSERT URL HERE">ENTER LINK NAME</a>

Remember to change the reply text to HTML.

I don't want to display the URL link, but the actual contents of the page. The <a> tag only displays the link.

My goal, for example, would be to display an up to date HTML page within a frame in the first post of a loans thread. This way, I wouldn't have to fill the thread with status updates.

CB's forum only allows HTML tags which are known to be non-evil.
What you want, is something that definitely can be used for something evil, as it allows you to change conditions for a Public Record or FS/WTB post without others noticing it.

you would normally use the IFRAME tag, but these forums don't support it...