Closing my own thread?

Hello Im sure this is covered but ive looked and searched and cant find an obvious answer. How do I close a thread I have started?

Thank you for responses

Send a PM to a mod of that forum.

You ask a moderator to do it for you.

Or just post in the thread with the message;

CLOSE PLEASE

(it also helps if you edit yoru first post with "CLOSE PLEASE" at the beginning if you dont overwrite the whole message for that)