anchor.diff:  GASS122006,2,O,"C,S,D","Interacting, Clumpy"
   GASS122004,1,G,"C,S",
   GASS11086,2,B,"C,D",Edge on
  -GASS11087,1,O,"C,D",Edge on
  +GASS11087,2,O,"C,S,D",Edge on
   GASS11080,?,B,D,"Clumpy, Interacting"
   GASS11071,2,B,C,
   GASS11126,2,O,C,
  
positive.code: GASS114083,2,B,C,Bright nearby object
  GASS114125,2,B,C,
  GASS9463,1,O,"C,S,B,D","Interacting, Group"
  GASS114025,1,G,C,
  GASS114096,2,B,C,
  GASS114077,1,O,"C,S,B","Bright nearby object, Canonical"
  GASS114117,1,O,"C,S","Diffuse spiral arms, Embedded object"
  GASS114056,2,O,"C,S",
  GASS114076,1,O,C,
  GASS7457,1,G,"C,S",
  GASS114038,2,B,C,
  GASS7493,2,B,C,
  
negative.code: GASS124007,2,B,"C,D",Offset bulge
  GASS124000,3,B,C,
  GASS124010,2,B,"S,C","Large galaxy, Clumpy, Diffuse spiral arms"
  GASS12005,2,O,"C,D",Edge On
  GASS124001,3,B,"C,S",Diffuse spiral arms
  GASS12002,2,B,C,
  GASS124025,1,O,D,Clumpy
  