Name of all the public & your private chat rooms will be displayed, alongside the number of people in each room.
You will be able to join the room by clicking on the "Join" button.
Mention Mention allows to mention a member in your message and it will appear highlighted to them.
Whisper After typing your message, selecting "whipser" option will send your message as a whisper.
View Profile This option only show for registered members and will take you to their profile page.