What is a Wiki?
The fastest way to work the web. Especially for editing, page creation.
A collaborative and participatory utopian online vision.
To provide an online space that is simple, accessible, and lightly managed.
To share and document our work. Make it readily retrievable.
To promote iterative and open processes. See (Recent Changes), (Page History), etc...
What is it used for?
For things that use text and media.
For documentation, course information and materials, multi-authored and ongoing writing, and just about anything else.
Why are you calling this KUMU?
While "wiki" is the Hawaiian work for "quick", "kumu" means many things in that language: including "teacher", as well as "starting place" and "gathering place".
Embed code for every page. So Sandbox:Test_Course on Kumu could be viewed in any web environment. Such as a WordPress space. (WordPress also has [a special plugin] for even more precise rendering of MediaWiki pages.)
The "book creator" creates clean and formatted PDF or EPUB versions of assembled content in the Kumu space on the fly.
Excellent media and page metadata (stats, citation, etc...).