Help for /topic

Usage:  /topic discussion "" | keywords | clear

/topic discussion keywords:  toggles each keyword for a discussion.
/topic discussion clear:     remove all keywords from a discussion.

Topics should be added to each discussion you create so that users can more 
easily find the appropriate discussion for their thread. Note: only moderators 
and owners can change topics.

It is important to note that specifying a keyword toggles that topic on a 
discussions. For example, if discussion "comp" has no keywords, then: /topic 
-comp foo,bar followed by /topic -comp foo,baz will result in "comp" having the 
keywords "bar" and "baz".

Anytime you set topics for a discussion, you'll be notified which were added and
which were removed.

To view the topics assigned to a discussion, use "/what discussion".

(see also: what about, what, moderators)