Student Guide to Using Moodle | Defnyddio Moodle - Canllaw i Fyfyrwyr
A wiki is a tool for creating web page content.
The wiki software allows you to edit the content online (no uploading or downloading of documents).
Also, the wiki allows a group of people to add, edit or delete content - ie it is an online collaborative autghoring package.
wikipedia is an encyclopedia created using wiki software.
Wikis have a variety of version control features; history, diff, fetch-back etc that help the wiki organiser keep control of what is displayed.