code: function (x, y, tickLength, tickWidth, horiz, renderer) {
  		return renderer.crispLine([
  				M,
  				x,
  				y,
  				L,
  				x + (horiz ? 0 : -tickLength),
  				y + (horiz ? tickLength : 0)
  			], tickWidth);
  	}
docs: Extendible method to return the path of the marker