import qcadimport mathdef start(str):	n=0        # counter	res=32     # resolution of sin		# x-axis:	qcad.rsPyAddLine(0, 0, 2*math.pi, 0)	while n<2*math.pi:		qcad.rsPyAddLine(n, 0, n, -0.05)		n+=math.pi/4	# y-axis:	qcad.rsPyAddLine(0, -1, 0, 1)	# sinus	n=0.0	step=(2*math.pi)/res	while n<2*math.pi:		qcad.rsPyAddLine(n, math.sin(n), n+step, math.sin(n+step))		n+=step	return(1)