Thread:Project:Support desk/Restricting editing to part of a page

What I would like to do is to have only one part of each wiki page that users can edit (sort of an "on-page" discussion zone). I prefer this to having the discussion on the discussion page because here comments would be immediately visible to the user.

Is it possible to restrict editing to a part of a page, a particular zone on a page?

I am using Product Version MediaWiki 1.17.0 PHP 5.3.8 (apache2handler) MySQL 5.5.16-log

Ed S.