anchor.diff:  		| DAY_OF_WEEK
   		| TIME
   		| TIMER
  +		| TODAYS_DATE MMDDYYYY?
  +		| TODAYS_NAME
   		| YEAR
   		| YYYYMMDD
   		| YYYYDDD
  
positive.code: TIMES : T I M E S;
  TITLE : T I T L E;
  TO : T O;
  TOP : T O P;
  TRAILING : T R A I L I N G;
  TRUE : T R U E;
  
negative.code: ;
  
  addToGivingStatement :
  	(identifier | literal)+ (TO identifier+)? GIVING (identifier ROUNDED?)+
  ;
  
  addCorrespondingStatement :
  