L2J Server

Hi all, I have a small question about server-client character classes, I like to add new professions to the server, but I don't know if it are hardcoded in the client, the names for example, I want to add a new class to humans, and I need to know if it need client modding or not need it, if anybody can answer me that question, I am very grateful, thx for all the help.

You can do it server side, but in order to get the new class names show in the client you'll have to edit it, wich is forbidden to talk about here.

Ok, thx for the info