Point markers

Line and area charts support point markers under line.pointMarker / area.pointMarker.

Default (new charts):

pointMarker: {
  shape: 'circle',
  radius: 3,
  fill: null,          // derive from series color
  stroke: '#ffffff',   // white border
  strokeWidth: 1,
  strokeDashArray: '',
}

Markers render when drawPoints is enabled for the series / chart.