Interface Outline: width?: number The width, or thickness of the line. color?: Color The color of the line. opacity?: number Opacity (overrides fill opacity).since v3001.0 join?: LineJoin Line join.since v3000.0 miterLimit?: number Miter limit. If the length of the miter divided by the line width exceeds this limit, the style is converted to a bevel.since v3001.0 cap?: LineCap Line cap.since v3001.0