anchor.diff:  Cirru,programming
   Clean,programming
   Clojure,programming
  -interpreters,unknown/other
  +CoffeeScript,programming
   ColdFusion,programming
   ColdFusion CFC,programming
  -interpreters,unknown/other
  +Common Lisp,programming
   Component Pascal,programming
   Coq,programming
   Cpp-ObjDump,data
  
positive.code: DOT,data
  Darcs Patch,unknown/other
  Dart,programming
  Delphi,programming
  Diff,unknown/other
  Dogescript,programming
  
negative.code: Grace,programming
  Grammatical Framework,programming
  Groff,unknown/other
  Groovy,programming
  Groovy Server Pages,unknown/other
  HTML,markup
  HTML+Django,markup
  