TrcChartItem

TrcChartItem = record
                 x, y         : double;
                 x2, y2       : double;
                 Color        : TColor;
                 FillColor    : TColor;
                 ShadowColor  : TColor;
                 HiLightColor : TColor;
                 PenStyle     : TPenStyle;
                 Tag          : longint;
                 LWid         : integer;
                 ItemClass    : byte;
                 ItemKind     : TrcItem;
                 Layer        : integer;
                 Transp       : boolean;
                 FrameStyle   : TFrameStyle;
                 Text         : string[15];
                 SizeOrAngle  : integer;
                 Depth        : integer;
                 mark         : byte;
               end;

The variables declared in TrcChartItem have the following meaning:

x,y	Coordinates of the position of the item. If an item is defined by two points (like a line), x and y contain the first point (which is the reference point)
x2,y2	The second point of an item (in case of lines and rectangles). For ellipses, x2 is the length of the horizontal half axis, and y2 is the length of the vertical half axis.
Color	The color of the item (if applicable).
FillColor	The filling color (if applicable)
ShadowColor	The color of the shadow part of the frame.
HiLightColor	The color of the highlighted part of the frame.
PenStyle	The style of the pen.
Tag	A user defined data tag.
LWid	The line width (if applicable).
ItemClass	An arbitrary item class number which is used in some methods of TRChart.
ItemKind	Indicator of the type of the item (see TrcItem for details).
Layer	Layer the element belongs to.
Transp	Transparency of the element.
FrameStyle	The style of the frame of a framed rectangle
Text	A string of max. 15 characters for text items.
SizeOrAngle	The size of a text, the size of the arrowhead, or the angle of the 3D bar
depth	The depth of a 3D bar
mark	The mark index (see MarkAt for details).