import mathimport qcaddef start(str):	x_m = 100.0   # x amplitude	y_m = 100.0   # y amplidute	w_x = 0.9     # x angle frequency	w_y = 0.7     # y angle frequency	t = 0.0       # time (counter)	x = 0.0       # current pos	y = 0.0	ox = 32000    # old pos	oy = 32000	res = 128     # resolution (number of lines)		# lissajous	while t<math.pi*10:		x = x_m * math.cos(w_x * t)		y = y_m * math.cos(w_y * t)		if ox!=32000:			qcad.rsPyAddLine(ox, oy, x, y)		ox = x		oy = y		t += 0.1	return(1)