anchor.diff:  Foil - Nickel;75.06
   Foil - Platinum;71.10
   Foil - Silver;71.06
  -Foil - Tin;80.05
  +Foil - Tin;08.07
   Foil - Zinc;79.05
   Foils (Fencing);95.06
   Folders - Paper Or Cardboard;48.20
  
positive.code: Flakes - Lead;78.04
  Flakes - Magnesium;84.04
  Flakes - Nickel;75.04
  Flakes - Tin;80.05
  Flakes Zinc;79.03
  Flame Alarms;85.31 Or 85.36 Or 90.27
  Flame Detectors;85.31 Or 85.36 Or 90.27
  
negative.code: Sheets, Metal - Lead;78.04
  Sheets, Metal - Magnesium;81.04
  Sheets, Metal - Nickel;75.06
  Sheets, Metal - Tin;80.07
  Sheets, Metal - Zinc;79.05
  Sheets, Plastics;39.18 or 39.19 or 39.20 or 39.21
  Sheets of Rubber;40.05 or 40.08 or 40.17
  