This is a new feature in version 3.0, which permits users to associate a username to an anonymous comment, as this is very common for comments in blogs.
On this #tikiexpresstutorial, using #tiki19 I’ll show you:
How to enable a feature from the Control Panels
How to enable a Global Feature from the features panel
How to enable an Interface feature
A quick overview of the Programmer features
And where to look for feature options