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