Renewal Client that uses a skillinfoz folder

[sonicfan1012]

Hello! I am new to rathena and the entire server editing process, and I was wondering if anyone had a client that has a skillinfoz folder. To my knowledge, based on the rAthena wiki, I need a client that actually uses the .lub files in a skillzinfo folder to edit/add/replace skills. However, unfortunately, I have not been able to find clients with skillinfoz folders (which raises another question: if the skillinfoz folders are missing, how are clients able to run?? Where exactly do they get the information for skills? Because, to my knowledge, it doesn't come completely from the database of the server...Because if it did, I wouldn't be having so many problems. ) Does anyone either have a renewal client that uses the .lub files or know how to answer how exactly renewal clients without skillinfoz folders can run?

Sorry if these are really noob questions, but I'd really like to know. Thank you very much