anchor.diff:   
    RangeLow:='';
    RangeHigh:='';
  +
  + PrefilterRootNode.Free;
   
    inherited Destroy;
   end;
  
positive.code: 
       TFLREInstructionGenerations=array of int64;
  
       TFLREThreadLocalStorageInstance=class
        private
         AllNext:TFLREThreadLocalStorageInstance;
  
negative.code:        RangeHigh:ansistring;
         HasRange:boolean;
  
         PrefilterRootNode:TFLREPrefilterNode;
         HasPrefilter:boolean;
  
         function NewNode(const NodeType:longint;const Left,Right,Extra:PFLRENode;const Value:longint):PFLRENode;
         procedure FreeNode(var Node:PFLRENode);
  
  