Topic: punBB user functions

Where are punBB functions (and what are theirs names) that can:
1. tell me if I'm logged in
2. Log me in
3. Logout
4. Register

My site [PHP, Python, Linux]

Re: punBB user functions

1. $pun_user['is_guest']
2. login.php
3. login.php
4. register.php