Upon claiming your Feed Perk you will get access to /feed using it will regenerate your hunger.
JellyLegs Perk
Upon claiming your JellyLegs Perk you will get access to /jl using it will stop damage to fall.
Nick Perk
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.
Fix Perk
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.