code: function (lineWidth) {
  		var chart = this.chart,
  			opposite = this.opposite,
  			offset = this.offset,
  			horiz = this.horiz,
  			lineLeft = this.left + (opposite ? this.width : 0) + offset,
  			lineTop = chart.chartHeight - this.bottom - (opposite ? this.height : 0) + offset;
  			
  		if (opposite) {
  			lineWidth *= -1; // crispify the other way - #1480, #1687
  		}
  
  		return chart.renderer.crispLine([
  				M,
  				horiz ?
  					this.left :
  					lineLeft,
  				horiz ?
  					lineTop :
  					this.top,
  				L,
  				horiz ?
  					chart.chartWidth - this.right :
  					lineLeft,
  				horiz ?
  					lineTop :
  					chart.chartHeight - this.bottom
  			], lineWidth);
  	}
docs: Get the path for the axis line