Element describing an entry in the chart legend.
Attributes
label  | 
Label type for item: square, circle, line, triangle.  | 
label-width  | 
Sets the label width.  | 
label-spacing  | 
Sets the spacing around the label.  | 
caption  | 
Specifies the caption text.  | 
caption-color  | 
Specifies the color of caption text.  |