anchor.diff:  Robert E. Lucas Jr.,
   Robert E. Swain,28
   Robert Edward Hungate,16
  -Robert Eisner,
  +Robert Eisner,436
   Robert Elderfield,
   Robert Enders,85
   Robert Endre Tarjan,110
  
positive.code: Roy A. Periana,
  Roy Baumeister,
  Roy Cameron,265
  Roy Chisholm,
  Roy Daniells,49
  Roy Emile Gereau,
  Roy George Douglas Allen,45
  
negative.code: Jakob Klaesi,
  Jakob Meisenheimer,98
  Jakob Stoustrup,
  James A. Hefner,12
  James A. Krumhansl,
  James A. Mirrlees,
  James A. Yorke,
  