Wikit functionality falls into four categories:

1. '''Content and Title Keyword Search'''

As [snitvfs] points out, keyword and title keyword search functionality is directly supported by [metakit] views, using the ''mk::select'' facility ''-keyword''.

2. '''Titles: Linkage between pages'''

Wikit provides the ability to reference pages in a [[keyword]] form within markup, where the keyword maps to a page title.  
This is implemented by a metakit view mapping referring->referenced pages, which is updated by inspection of pages upon creation and editing.

3. '''Markup Language with display conversions'''

4. '''User Interfaces - Tk GUI and HTTP/HTML'''