anchor.diff:  "7856","Bitumens"
   "7857","Bitumens"
   "7858","Bisulfites (Vol. 54; 1992)"
  -"7859","Bisphenol A diglycidyl ether (Araldite)"
  +"7859","Bisphenol A diglycidyl ether (Aralditea)"
   "7860","Bischloroethyl nitrosourea"
   "7861","Bis(chloromethyl)ether"
   "7862","Bis(2-chloroethyl)ether"
  
positive.code: "24932","Bitumens"
  "24933","Bitumens"
  "24934","Bisulfites (Vol. 54; 1992)"
  "24935","Bisphenol A diglycidyl ether (Araldite)"
  "24936","Bischloroethyl nitrosourea"
  "24937","Bis(chloromethyl)ether"
  "24938","Bis(2-chloroethyl)ether"
  
negative.code: "23023","Bis(2-chloroethyl)ether"
  "23024","Bis(chloromethyl)ether"
  "23025","Bischloroethyl nitrosourea"
  "23026","Bisphenol A diglycidyl ether (Aralditea)"
  "23027","Bisulfites (Vol. 54; 1992)"
  "23028","Bitumens"
  "23029","Bitumens"
  