anchor.diff:      FHorizontalGroupByDefs : TmGroupByDefs;
       // Options
       FOptions : TmPivoterOptions;
  +    FEnableSort : boolean;
       // values of keys of group-by sets
       FVerticalValues: TKeyValuesForGroupByDefs;
       FHorizontalValues: TKeyValuesForGroupByDefs;
  
positive.code:     end;
    end;
  
    if poEnableSort in FOptions then
    begin
      DoSortIndex(FVerticalKeysIndex, FVerticalGroupByDefs);
      DoSortIndex(FHorizontalKeysIndex, FHorizontalGroupByDefs);
  
negative.code:     function Add : TRecordCoordinates;
    end;
  
    TmPivoterOption = (poHorizontalGrandTotal, poVerticalGrandTotal);
    TmPivoterOptions = set of TmPivoterOption;
  
  const
  