[ Thanks to Dmitri
Popov for this link. ]
“For more functionality, go for a full version of LionWiki which
sports a handful of handy features and plugins. The bundled plugins
add several useful features, including support for comments (and
captcha for preventing comment spam), footnotes, tables, tags, and
RSS feeds. All plugins are enabled by default, and embedding their
features into wiki pages is as easy as it gets. For example, to add
tags to the currently edited page, insert the {tags:tag1, tag2,
tag2} line into the page. “