anchor.diff:  ,binarytrees,ocaml,4
   ,binarytrees,clean,0
   ,binarytrees,gpp,0
  +,binarytrees,icpp,0
   
   ,binarytrees,lisaac,0
   
  
positive.code: ,regexdna,g95,0
  ,regexdna,ifc,0
  ,regexdna,gpp,0
  ,regexdna,bigforth,3
  ,regexdna,gnat,2
  ,regexdna,perl,0
  
negative.code: ,nsieve,scala,4
  ,nsieve,gpp,2
  ,nsieve,gpp,0
  ,nsieve,icpp,2
  ,nsieve,icpp,0
  ,nsieve,java,2
  X,nsieve,javaxx,2
  X,nsieve,javaxint,2
  