anchor.diff:  RWANDA,RWA,RWA
   SAINT KITTS AND NEVIS,KNA,KNA
   SAINT LUCIA,LCA,LCA
  -SAINT PIERRE AND MIQUELON [FRANCE],SPM,FRA
  +SAINT PIERRE AND MIQUELON [FRANCE],SPM,SPM
   SAINT VINCENT AND THE GRENADINES,VCT,VCT
   SAMOA,WSM,WSM
  +San Marino,NULL,SMR
  +Sao Tome & Prin,STP,STP
   Sao Tome & Principe,STP,STP
   SAO TOME AND PRINCIPE,STP,STP
   SAU,SAU,SAU
   SAU: SAUDI ARABIA,SAU,SAU
   SAUDI ARABIA,SAU,SAU
   Saudi Arabia Moi,NULL,NULL
  -SCG,SCG,NULL
  -SCG: SERBIA AND MONTENEGRO,SCG,NULL
  +SCG,SCG,~CS
  +SCG: SERBIA AND MONTENEGRO,SCG,~CS
   SDN,SDN,SDN
   SDN: SUDAN,SDN,SDN
   SEN,SEN,SEN
   SEN: SENEGAL,SEN,SEN
   SENEGAL,SEN,SEN
   SERBIA,SRB,SRB
  -Serbia And Montenegr,NULL,NULL
  -SERBIA AND MONTENEGRO,SCG,NULL
  +Serbia And Montenegr,SCG,~CS
  +SERBIA AND MONTENEGRO,SCG,~CS
  +Serbia pre-2009,SRB,SRB
  +Serbia/Monteneg,SCG,~CS
   SEYCHELLES,SYC,SYC
   SGP,SGP,SGP
   SGP: SINGAPORE,SGP,SGP
   SIERRA LEONE,SLE,SLE
   SINGAPORE,SGP,SGP
  +Sint Maarten,NULL,MAF
   SLB,SLB,SLB
   SLB: SOLOMON ISLANDS,SLB,SLB
   SLE,SLE,SLE
  
positive.code: BEN,BEN,BEN
  BEN: BENIN,BEN,BEN
  BENIN,BEN,BEN
  BERMUDA [UNITED KINGDOM],BMU,GBR
  BFA,BFA,BFA
  BFA: BURKINA FASO,BFA,BFA
  BGD,BGD,BGD
  
negative.code: ISR,ISR,ISR
  ISR: ISRAEL,ISR,ISR
  ISRAEL,ISR,ISR
  Israel 1989,ISR,ISR
  ITA,ITA,ITA
  ITA: ITALY,ITA,ITA
  ITALY,ITA,ITA
  