To see a higher order pure mode in the simulation, click the reset button, click the custom button, choose n and m, enter (so the yellow disappears) and click 'add'. If you do not click the re...To see a higher order pure mode in the simulation, click the reset button, click the custom button, choose n and m, enter (so the yellow disappears) and click 'add'. If you do not click the reset first button the selected mode gets added to the modes that are already present.