docs: public void bezierCurveTo(double xc1, double yc1, double xc2, double yc2, double x1, double y1) {
  		this.gc.bezierCurveTo(
  				doc2fxX(xc1), doc2fxY(yc1),
  				doc2fxX(xc2), doc2fxY(yc2),
  				doc2fxX(x1), doc2fxY(y1));
  	}