Not Wiki per se, as it's not intented to be collaborative, rather, it just uses Custom Post Types to separate documentation articles from the rest of your content.
I know BBCode and HTML and PHP and CSS and still the markup just baffles me.
When this plugin was written WordPress plugins available for what I want to do either aren't what I want to do, or don't work with the version of WordPress.
To display your wiki articles on page, you can either use the template files, or you can use the shortcode that's been added in 0.9..
Unpack the zip file and upload to the wp-content plugins directory or use Add New Plugin WordPress to install..
Use the shortcode or the template file examples to display list of wiki articles on your page...
You may want to use your wiki, as in have actual wiki page, and for that, you'll either need to add template to your theme or use the shortcode.
To use the shortcode, all you need to do is add on post or page and it will display list of all your wiki articles..
The I can give you for working with custom post types is Custom Post Types article in Codex.
Browse the code, check out SVN repository, or subscribe to the development log by RSS...
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