Get the version of a Wikipedia page from a specific date

If you go to the page for the Infobox Template, the "What links here" link in the toolbox will tell you all of the pages that use that template. In this case...

http://en.wikipedia.org/wiki/Special:WhatLinksHere/Template:Infobox_martial_artist

Setup a HTML anchor manually using Template:Anchor.

Say that you want to link to a section called "Overview" in an article. Add the template before the heading to make it look like:

{{Anchor|AnyTextYouWant}}
<!-- Note to other editors: Don't change this anchor text -->
== Overview ==

(Of course, the comment line is optional.)

Then make a link to the section as [[Article#AnyTextYouWant]]. The link would not break as long as the anchor text is not changed.