anchor.diff:  | -
   | -
   
  -| special
  +| specials
   | Mineral Poor, Ultra Poor, Artifact, Mineral Rich, Ultra Rich, Hostile, Fertile, Gaia
   | -
   | -
  
positive.code: * nation{1}
  * total production{1}
  * scan radius{1}
  
  | fleet
  | A group of ships commanded by a nation. Is either orbiting a star or traveling through deep space. 
  | - 
  |
  * nation{1}
  * ship{+}
  * star{0..1}
  
  | ship
  | A single space vessel. The type is either:
  
  * scout (speed = 0.5, scan radius = 0.5)
  * fighter (speed = 0.4, scan radius = 0.25)
  * colony ship (speed = 0.25, scan radius = 0.5)
  | -
  |
  * type
  * scan radius{1}
  * speed [parsecs/turn]
  
  |=== 
  
negative.code: [cols="a,a,a,a",width="100%"]
  |===
  | Term | Description | Supertype (is-a) | Relations (has-a)
  