anchor.diff:      property OptShowFlatSepar: boolean read FOptShowFlatSepar write FOptShowFlatSepar default _InitOptShowFlatSep;
       property OptShowScrollMark: boolean read FOptShowScrollMark write FOptShowScrollMark default _InitOptShowScrollMark;
       property OptShowDropMark: boolean read FOptShowDropMark write FOptShowDropMark default _InitOptShowDropMark;
  +    property OptShowXRounded: boolean read FOptShowXRounded write FOptShowXRounded default _InitOptShowXRounded;
       property OptShowXButtons: TATTabShowClose read FOptShowXButtons write FOptShowXButtons default _InitOptShowXButtons;
       property OptShowPlusTab: boolean read FOptShowPlusTab write FOptShowPlusTab default _InitOptShowPlusTab;
       property OptShowArrowsNear: boolean read FOptShowArrowsNear write FOptShowArrowsNear default _InitOptShowArrowsNear;
  
positive.code:   FBitmap.PixelFormat:= pf24bit;
    FBitmap.Width:= 1600;
    FBitmap.Height:= 60;
  
    FTabIndex:= 0;
    FTabIndexOver:= -1;
  
negative.code:     FScrollPos: integer;
      FImages: TImageList;
      FBitmap: TBitmap;
      FBitmapRound: TBitmap;
  
      FRectArrowDown: TRect;
      FRectArrowLeft: TRect;
  