mechanics.ymlat the root of your Oraxen folder. They allow you to change global parameters for all item using this mechanic. You won't need it often but it can be useful. For example for the bedrockbreak mechanic which allows you to break bedrock. Most of servers don't want their player to break the ground of the world : the last layer of bedrock. In the global configuration of bedrockbreak mechanic you can change toggle this (and this will get applied to all your items using this mechanic).