anchor.diff:  DYAC,Yacare, Uruguay,,,intl,-155,-1,171,-1,37,-1,-40,-25,-65,-47,0,0,0,0,default,;
   DZAN,Zanderij, Suriname,,,intl,-265,5,120,5,-358,8,-10,20,-76,-47,0,0,0,0,default,;
   DKGS,Korean geo datum 1995, S Korea,,,ELLWE,0,1,0,1,0,1,27,45,120,139,0,0,0,0,default,;
  -DSIR,Sirgas, South America,,,ELLRF,0,1,0,1,0,1,-65,-50,-90,-25,0,0,0,0,default,;
  +DSIR,Sirgas, South America,,,GRS80,0,1,0,1,0,1,-65,-50,-90,-25,0,0,0,0,default,;
   DWGS84,WGS 84,,,,wgs84,0,1,0,1,0,1,0,0,0,0,0,0,0,0,default,;
  
positive.code: DNAH-B,Nahrwan, United Arab Emirates,,,clrk80,-249,25,-156,25,381,25,17,32,45,62,0,0,0,0,default,;
  DNAH-C,Nahrwan, Saudi Arabia,,,clrk80,-243,20,-192,20,477,20,8,38,28,62,0,0,0,0,default,;
  DNAP,Naparima, Trinidad & Tobago,,,intl,-10,15,375,15,165,15,8,13,-64,-59,0,0,0,0,default,;
  DNAR-A,North american 1983, Alaska,,,ELLRF,0,2,0,2,0,2,48,78,-175,-135,0,0,0,0,default,;
  DNAR-B,North american 1983, Canada,,,ELLRF,0,2,0,2,0,2,36,90,-150,-50,0,0,0,0,default,;
  DNAR-C,North american 1983, CONUS,,,ELLRF,0,2,0,2,0,2,15,60,-135,-60,0,0,0,0,default,;
  DNAR-D,North american 1983, Mexico,,,ELLRF,0,2,0,2,0,2,11,35,-122,-72,0,0,0,0,default,;
  DNAR-E,North american 1983, Aleutian,,,ELLRF,-2,5,0,2,4,5,51,74,-180,180,0,0,0,0,default,;
  DNAR-H,North american 1983, Hawaii,,,ELLRF,1,2,1,2,-1,2,17,24,-164,-153,0,0,0,0,default,;
  DNAS-A,North american 1927, Eastern US,,,clrk66,-9,5,161,5,179,8,18,55,-102,-60,0,0,0,0,default,;
  DNAS-B,North american 1927, Western US,,,clrk66,-8,5,159,3,175,3,19,55,-132,-87,0,0,0,0,default,;
  DNAS-C,North american 1927, CONUS,,,clrk66,-8,5,160,5,176,6,15,60,-135,-60,0,0,0,0,default,;
  
negative.code: DEUR-S,European 1950, Iraq; Israel,,,intl,-103,-1,-106,-1,-141,-1,20,48,24,60,0,0,0,0,default,
  DEUR-T,European 1950, Tunisia,,,intl,-112,25,-77,25,-145,25,24,43,2,18,0,0,0,0,default,;
  DEUS,European 1979,,,,intl,-86,3,-98,3,-119,3,30,80,-15,24,0,0,0,0,default,;
  DETRS,ETRS 89,,,,GRS80,0,1,0,1,0,1,0,0,0,0,0,0,0,0,default,;
  DFAH,Oman,,,,clrk80,-346,3,-1,3,224,9,10,32,46,65,0,0,0,0,default,;
  DFLO,Observatorio met. 1939, Flores,,,intl,-425,20,-169,20,81,20,38,41,-33,-30,0,0,0,0,default,;
  DFOT,Fort thomas 1955, Leeward Is.,,,clrk80,-7,25,215,25,225,25,16,19,-64,-61,0,0,0,0,default,;
  