This Wiki page is edited by participants of the HTML Accessibility Task Force. It does not necessarily represent consensus and it may have incorrect information or information that is not supported by other Task Force participants, WAI, or W3C. It may also have some very useful information.
From HTML accessibility task force Wiki
You can export the text and editing history of a particular page or set of pages wrapped in some XML. This can be imported into another wiki using MediaWiki via the import page.
To export pages, enter the titles in the text box below, one title per line, and select whether you want the current revision as well as all old revisions, with the page history lines, or the current revision with the info about the last edit.