t - Reports:
This mode will show you a report of what is done on the server, such as, /stats commands or /admin. Every time someone issues certain commands, you will be notified. If you want to watch who is curious about the network you can set yourself +t. Sometimes when users are trying various odd commands they are trying to learn something because they do not know the correct commands.
You may choose to offer assistance to these users.
Privilege: Operators
Examples:
/mode Dan +t
/umode +t