Appearance
OverlayOptions 
Type: object
HTML element provided with its affine transformation in the graph space.
Properties
- element 
HTMLElement|stringHTML element being transformed. You can also provide an HTML string. - position 
{x: number, y: number}The element translation in the graph space. - scaled(optional) 
boolean[=true]Whether or not the overlay should be scaled together with the graph. - size(optional) 
{width: number, height: number}The element size in the graph space.