PhpBB3 BBCodes

There are two BBCodes I want to add but I'm not sure what the html etc is and idk if I am able to add them

one is here it's the attachment one. I want that on my forum but I'm not sure how to add that (like I don't know the html and other info)

also here.. This forum has a BBCode called LaTeX and I want that on my forum too...but I'm not sure how to add that either....I can PM the admin of that forum....but idk if he/she will tell me.

I understand it is most likely not possible to add them.

The first one is not a bbcode, it is a modification.
You need to download it and read the instructions.

The Latex is also a modification, found here: http://www.phpbb.com/community/viewtopi ... &t=1302725

How to install a modification: http://www.phpbb.com/community/viewtopi ... 1&t=724145