anchor.diff:  
       //colors
       FColorBg: TColor; //color of background (visible at top and between tabs)
  -    FColorDropMark: TColor;
       FColorBorderActive: TColor; //color of 1px border of active tab
       FColorBorderPassive: TColor; //color of 1px border of inactive tabs
       FColorTabActive: TColor; //color of active tab
  
positive.code:     FColorCloseXOver: TColor; //"color of "x" mark, mouseover
      FColorArrow: TColor; //color of "down" arrow (tab menu), inactive
      FColorArrowOver: TColor; //color of "down" arrow, mouse-over
      FColorScrollMark: TColor;
  
      //opts
  
negative.code:   TabIndexArrowScrollLeft = -4;
    TabIndexArrowScrollRight = -5;
  
  const
    _InitTabColorBg = clBlack;
    _InitTabColorTabActive = $808080;
    _InitTabColorTabPassive = $786868;
    _InitTabColorTabOver = $A08080;
    _InitTabColorFontModified = $A00000;
    _InitTabColorBorderActive = $A0A0A0;
    _InitTabColorBorderPassive = $A07070;
    _InitTabColorCloseBg = clNone;
    _InitTabColorCloseBgOver = $6060E0;
    _InitTabColorCloseBorderOver = _InitTabColorCloseBgOver;
    _InitTabColorCloseX = clLtGray;
    _InitTabColorCloseXOver = clWhite;
    _InitTabColorArrow = $999999;
    _InitTabColorArrowOver = $E0E0E0;
    _InitTabColorDropMark = $6060E0;
    _InitTabColorScrollMark = _InitTabColorDropMark;
  
  const
    _InitOptTabAngle = 4;
    _InitOptUseAngleForMaxTabs = 10;
    _InitOptTabHeight = 24;
    _InitOptTabWidthMinimal = 40;
    _InitOptTabWidthNormal = 130;
    _InitOptTabWidthMinimalHidesX = 55;
    _InitOptSpaceInitial = 30; //big for scroll arrows
    _InitOptSpaceBeforeText = 6;
    _InitOptSpaceBetweenTabs = 0;
    _InitOptSpaceOnTop = 5;
    _InitOptSpaceXRight = 10;
    _InitOptSpaceXInner = 3;
    _InitOptSpaceXSize = 12;
    _InitOptArrowSize = 4;
    _InitOptArrowSpaceLeft = 4;
    _InitOptArrowSpaceRight = 20;
    _InitOptColoredBandSize = 3;
    _InitOptScrollMarkSizeX = 20;
    _InitOptScrollMarkSizeY = 3;
    _InitOptDropMarkSize = 6;
  
    _InitOptShowAtBottom = false;
    _InitOptShowNumberPrefix = '';
    _InitOptShowScrollArrows = true;
    _InitOptShowScrollMark = true;
    _InitOptShowDropMark = true;
    _InitOptShowXButtons = tbShowAll;
    _InitOptShowPlusTab = true;
    _InitOptShowPlusText = ' + ';
    _InitOptShowModifiedText = '*';
    _InitOptShowArrowMenu = true;
    _InitOptShowBorderActiveLow = false;
    _InitOptShowEntireColor = false;
    _InitOptMouseMiddleClickClose = true;
    _InitOptMouseDoubleClickClose = true;
    _InitOptMouseDoubleClickPlus = false;
    _InitOptMouseDragEnabled = true;
    _InitOptMouseDragOutEnabled = true;
  
  type
    { TATTabs }
  
  