anchor.diff:  ASCII : A S C I I;
   ASSIGN : A S S I G N;
   AT : A T;
  +ATTRIBUTE : A T T R I B U T E;
   AUTHOR : A U T H O R;
   BEFORE : B E F O R E;
   BEGINNING : B E G I N N I N G;
  
positive.code: SEQUENTIAL : S E Q U E N T I A L;
  SET : S E T;
  SHARED : S H A R E D;
  SHIFT_IN : S H I F T MINUSCHAR I N;
  SHIFT_OUT : S H I F T MINUSCHAR O U T;
  SHORT_DATE : S H O R T MINUSCHAR D A T E;
  
negative.code: 
  dataDivisionBody :
  	fileSection?
  	dataBaseSection?
  	workingStorageSection?
  	linkageSection?
  	communicationSection?
  	localStorageSection?
  	screenSection?
  	reportSection?
  	programLibrarySection?
  ;
  
  // -- file section ----------------------------------
  