anchor.diff:  "Cubitt, Allan",The Pool of Bethesda
   unknown,The Rehearsal
   unknown,The Revenger's Tragedy
  -unknown,The Rivals
  +"Sheridan, Richard Brinsley",The Rivals
   unknown,The Road to Mecca
   unknown,The Royal Family
  -unknown,The School for Scandal
  +"Sheridan, Richard Brinsley",The School for Scandal
   unknown,The Second Man
   unknown,The Show-Off
   "Hansberry, Lorraine",The Sign in Sidney Brustein's Window
  
positive.code: "Farr, David",The Heart of Robin Hood
  unknown,The Hostage
  unknown,The House of Blue Leaves
  unknown,The Iceman Cometh
  unknown,The Illusion
  unknown,The Imaginary Invalid
  "Wilde, Oscar",The Importance of Being Earnest
  unknown,The Island
  unknown,The Knight of the Burning Pestle
  
negative.code: "Edgar, David",Daughters of the Revolution [Continental Divide]
  unknown,Dead Man's Cell Phone
  "Soyinka, Wole",Death and the King's Horseman
  "Miller, Arthur",Death of a Salesman
  unknown,Distracted
  unknown,Don Juan in Hell
  unknown,Don Quixote
  