anchor.diff:  1269,F,N/A,W-A-TS---------,W - A - TS -- -- -- -- -,3.X.2.3,SEVERE TURBULENCE,POINT,
   1270,F,N/A,W-A-TE---------,W - A - TE -- -- -- -- -,3.X.2.4,EXTREME TURBULENCE,POINT,
   1271,F,N/A,W-A-I----------,W - A - I- -- -- -- -- -,3.X.3,ICING,NO_SYMBOL,
  -1272,F,N/A,W-A-IC---------,W - A - IC -- -- -- -- -,3.X.3.1,CLEAR ICING,POINT,
  +1272,F,N/A,W-A-IC---------,W - A - IC -- -- -- -- -,3.X.3.1,CLEAR ICING,NO_SYMBOL,
   1273,F,N/A,W-A-ICL--------,W - A - IC L- -- -- -- -,3.X.3.1.1,LIGHT CLEAR ICING,POINT,
   1274,F,N/A,W-A-ICM--------,W - A - IC M- -- -- -- -,3.X.3.1.2,MODERATE CLEAR ICING,POINT,
   1275,F,N/A,W-A-ICS--------,W - A - IC S- -- -- -- -,3.X.3.1.3,SEVERE CLEAR ICING,POINT,
  -1276,F,N/A,W-A-IR---------,W - A - IR -- -- -- -- -,3.X.3.2,RIME ICING,POINT,
  +1276,F,N/A,W-A-IR---------,W - A - IR -- -- -- -- -,3.X.3.2,RIME ICING,NO_SYMBOL,
   1277,F,N/A,W-A-IRL--------,W - A - IR L- -- -- -- -,3.X.3.2.1,LIGHT RIME ICING,POINT,
   1278,F,N/A,W-A-IRM--------,W - A - IR M- -- -- -- -,3.X.3.2.2,MODERATE RIME ICING,POINT,
   1279,F,N/A,W-A-IRS--------,W - A - IR S- -- -- -- -,3.X.3.2.3,SEVERE RIME ICING,POINT,
  
positive.code: 608,D,Friend,SFGPIX----H----,S F G P IX -- -- H- -- -,1.X.3.3.9 ,MEDICAL FACILITY,POINT,
  609,D,Friend,SFGPIXH---H----,S F G P IX H- -- H- -- -,1.X.3.3.9.1 ,HOSPITAL,POINT,
  610,D,Friend,SFGPIR----H----,S F G P IR -- -- H- -- -,1.X.3.4 ,SEA SURFACE INSTALLATION,POINT,
  611,D,Friend,SFGPIRR---H----,S F G P IR R- -- H- -- -,1.X.3.4.1 ,SEA SURFACE INSTALLATION,POINT,
  612,D,Friend,SFSP-----------,S F S P -- -- -- -- -- -,1.X.4 ,SEA SURFACE TRACK,POINT,
  613,D,Friend,SFSPC----------,S F S P C- -- -- -- -- -,1.X.4.1 ,COMBATANT,POINT,
  614,D,Friend,SFSPCL---------,S F S P CL -- -- -- -- -,1.X.4.1.1 ,LINE,POINT,
  
negative.code: 696,D,Friend,SFUPWDM--------,S F U P WD M- -- -- -- -,1.X.5.3.1 ,SEA MINE DECOY,POINT,
  697,D,Friend,SFUPN----------,S F U P N- -- -- -- -- -,1.X.5.4 ,NON-SUBMARINE,POINT,
  698,D,Friend,SFUPND---------,S F U P ND -- -- -- -- -,1.X.5.4.1 ,DIVER,POINT,
  699,D,Friend,SFUPNB---------,S F U P NB -- -- -- -- -,1.X.5.4.2 ,BOTTOM RETURN/NOMBO,NO_SYMBOL,
  700,D,Friend,SFUPNBS--------,S F U P NB S- -- -- -- -,1.X.5.4.2.1 ,SEABED INSTALLATION/MANMADE,POINT,
  701,D,Friend,SFUPNBR--------,S F U P NB R- -- -- -- -,1.X.5.4.2.2 ,SEABED ROCK/STONE OBSTACLE OTHER ,POINT,
  702,D,Friend,SFUPNBW--------,S F U P NB W- -- -- -- -,1.X.5.4.2.3 ,WRECK,POINT,
  703,D,Friend,SFUPNM---------,S F U P NM -- -- -- -- -,1.X.5.4.3 ,MARINE LIFE,POINT,
  704,D,Friend,SFUPNA---------,S F U P NA -- -- -- -- -,1.X.5.4.4 ,SEA ANOMALY,POINT,
  705,D,Friend,SFFP-----------,S F F P -- -- -- -- -- -,1.X.6 ,SPECIAL OPERATIONS FORCE (SOF) UNIT,POINT,
  706,D,Friend,SFFPA----------,S F F P A- -- -- -- -- -,1.X.6.1 ,SOF UNIT AVIATION,NO_SYMBOL,
  707,D,Friend,SFFPAF---------,S F F P AF -- -- -- -- -,1.X.6.1.1 ,SOF UNIT FIXED WING,POINT,
  708,D,Friend,SFFPAFA--------,S F F P AF A- -- -- -- -,1.X.6.1.1.1 ,SOF UNIT ATTACK,POINT,
  709,D,Friend,SFFPAFK--------,S F F P AF K- -- -- -- -,1.X.6.1.1.2 ,SOF UNIT REFUEL,POINT,
  