1 ikiwiki supports adding "History" links to the top of pages to browse the
2 revison history of a page. This is enabled by the `historyurl` setting,
3 which is used to specify the URL to a web interface such as [[ViewVC]]
4 (for Subversion) or [[Gitweb]]. In that url, "\[[file]]" is replaced with
5 the name of the file to view.