The Wiki articles are using BBCode.
The Kusubooru wiki has no specific style guide, but here's some general advice for creating wiki pages for tags:
BBCode Tutorial (Take out the space from the tags)
[ h1 ] Main header [ /h1 ]
Followed by another.
This paragraph contains a [ url ] URL [ /url ] and also a word linked to a url [ url = http://my.url.com ] word [ /url ]
Note that the http:// part is necessary.
[ h2 ] 1. Header of the article [ /h2 ]
[ h3 ] 1.1 Subheader of the article [ /h3]
[ h3 ] 1.2 Another subheader of the article [ /h3]
This paragraph contains a [ [ wiki_tag_link ] ] and an image [ img ]http://url.to.the.image.png[ /img ]. Note that you can also provide an alternative name to your wiki link by using [ [ wiki_tag_link | wiki link ] ].
Below you can see the tags in order to make a list:
[ * ] Item 1
[ * ] Item 2
[ * ] etc
By putting > > before of a number will create a quick link to a certain post in Kusubooru. Example: >>62
Have fun writing your articles! :)