Change Nick ~ Typing /nick [new username] changes your username.

Actions ~ Typing /me followed by an action will let you perform an action in the chat room. For example, typing "/me thinks" will display as "Your name thinks" in the chat.

Private Messages ~ Double click on Username of person you wish to have a private dialogue with. A query window will open.

Ignore User ~ Type /ignore username to ignore all messages from the person. Type /ignore username again to un-do this feature.