Conceptually, a Wikit is a searchable collection of inter-referential pages entered in a markup language and displayable/editable by several user interfaces.

Wikit functionality falls into four general and orthogonal 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''.  This could be provided by [mkvfs].

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, editing and re-titling.

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

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

5. '''Revision History'''

This could be provided by [a versioning virtual filesystem]