anchor.diff:      function Add : TRecordCoordinates;
     end;
   
  -  TmPivoterOption = (poEnableSort, poHorizontalGrandTotal, poVerticalGrandTotal);
  +  TmPivoterOption = (poHorizontalGrandTotal, poVerticalGrandTotal);
     TmPivoterOptions = set of TmPivoterOption;
   
   const
  
positive.code:   FVerticalKeysIndex := TmKeysIndex.Create(0);
    FHorizontalKeysIndex := TmKeysIndex.Create(0);
    FSummaryDefinitions := TmSummaryDefinitions.Create;
  end;
  
  destructor TmPivoter.Destroy;
  
negative.code:     property SummaryDefinitions : TmSummaryDefinitions read FSummaryDefinitions;
      // options
      property Options : TmPivoterOptions read FOptions write FOptions default pOptionsDef;
      property EnableSort : boolean read FEnableSort write FEnableSort;
  
      // output values
      property VerticalValues: TKeyValuesForGroupByDefs read FVerticalValues; // the collection of all key values for any vertical level
  