This object type allows modders to create an object that can cook items. This is obviously pretty important to the gameplay.
It allows you to turn off the fire effect, the smoke, the glow effect, the max amount of stored fuel, the burn rate, and each fuel item. I'm excited to see people create modern mods that include ovens and other household objects.
This object is not fully implemented yet but it is about 30% completed. It will definitely be in the next preview build.