anchor.diff:  begin
     PrevTop := ColumnBox_Maps.TopIndex;
     ColumnBox_Maps.Clear;
  -
     fMaps.Lock;
     try
       ListI := 0;
  
positive.code: 
        Label_Difficulty.Hide;
        DropBox_Difficulty.Hide;
  
        Label_AIPlayerType.Hide;
        DropBox_AIPlayerType.Hide;
  
negative.code: constructor TKMMenuSingleMap.Create(aParent: TKMPanel; aOnPageChange: TKMMenuChangeEventText);
  begin
    inherited Create(gpSingleMap);
  
    fOnPageChange := aOnPageChange;
    OnEscKeyDown := BackClick;
  
  