anchor.diff:  {$endif}
        if assigned(Node) and ((Argument<>0) or (NodeStack.IndexOf(Node)<0)) then begin
         case Node^.NodeType of
  -       ntNOP:begin
  -       end;
          ntALT:begin
           case Argument of
            0:begin
  
positive.code: 
        ucACCEPT=0;
        ucERROR=16;
  
        FLREInitialized:longbool=false;
  
  
negative.code:   end;
   end;
  begin
   result:=ProcessNode(AnchoredRootNode,npTopLevel);
  end;
  
  function TFLRE.GetPrefilterExpression:ansistring;
  