anchor.diff:  Iron Tipped Arrows,Weapon
   Bronze Tipped Arrows,Weapon
   Steel Tipped Arrows,Weapon
  -unknown,unknown
  +Flaming Arrow,Weapon
   Stone Hammer,Hand Tool
   Iron Hammer,Hand Tool
   Bronze Hammer,Hand Tool
  
positive.code: Torch,Hand Tool
  Wool,Raw Material
  Shepherd's Crook,Hand Tool
  unknown,unknown
  unknown,unknown
  unknown,unknown
  
negative.code: Flax Seed,Raw Material
  Wheat,Raw Material
  Flax Fiber,Raw Material
  unknown,unknown
  Spider Silk,Raw Material
  Fieldstone,Building Material
  Brick,Building Material
  