tab must correspond to one of the Tabs in Don't Starve or its expansions. It may also be required to be capitalized depending on the icon that corresponds to it.
tier must be a number between 0-8 included.
0 gives "Always available"
tool and biome should only be used for objects which are either foremost naturally spawning and have been made craftable as an afterthought, or which require specific methods of destruction, such as Lawn Decorations. It does not need to be mentioned in the infobox that every craftable structure can be destroyed with a Hammer or Deconstruction Staff.