anchor.diff:  PROCESS : P R O C E S S;
   PROGRAM : P R O G R A M;
   PROGRAM_ID : P R O G R A M MINUSCHAR I D;
  +PROGRAM_LIBRARY : P R O G R A M MINUSCHAR L I B R A R Y;
   PROGRAM_STATUS : P R O G R A M MINUSCHAR S T A T U S;
   PROMPT : P R O M P T;
   PROTECTED : P R O T E C T E D;
  
positive.code: 
  dataDivisionBody :
  	fileSection?
  	workingStorageSection?
  	linkageSection?
  	communicationSection?
  	screenSection?
  	reportSection?
  ;
  
  // -- file section ----------------------------------
  
negative.code: LABEL : L A B E L;
  LANGUAGE : L A N G U A G E;
  LAST : L A S T;
  LB : L B;
  LD : L D;
  LEADING : L E A D I N G;
  LEFT : L E F T;
  LENGTH : L E N G T H;
  LESS : L E S S;
  LIB : L I B;
  LIBACCESS : L I B A C C E S S;
  LIBPARAMETER : L I B P A R A M E T E R;
  LIBRARY : L I B R A R Y;
  LIMIT : L I M I T;
  LIMITS : L I M I T S;
  