Upon claiming your Feed Perk you will get access to /feed using it will regenerate your hunger.

Upon claiming your JellyLegs Perk you will get access to /jl using it will stop damage to fall.

Upon claiming your Nick Perk you will get access to /nick using it will give you access to customise your name in game with colours.

Upon claiming your Fix Perk you will get access to /fix using it will fix your current item in hand or /fix all will fix any damaged tool or amour in your inventory.