anchor.diff:  | 
   * spectral class{1}
   * planetary characteristics{1}
  +* colony{0..1}
   * fleet{*}
   
   | spectral class 
  
positive.code: | "A colony is a territory under the immediate political control of a geographically distant state." https://en.wikipedia.org/wiki/Colony_(disambiguation)[(Wikipedia)] 
  | - 
  | 
  * star{1}
  * nation{1}
  * total production{1}
  * production ratios{1}
  
  | fleet
  | A group of ships commanded by a nation. Is either orbiting a star or traveling through deep space. 
  
negative.code: * 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]
  
  |=== 
  