A method of forming a memory cell includes forming a conductive floating gate over the substrate, forming a conductive control gate over the floating gate, forming a conductive erase gate laterally to one side of the floating gate and forming a conductive select gate laterally to an opposite side of the one side of the floating gate. A view sequence is an order that graphical objects on a graphical user interface are viewed by a user. The rotor can be connected to detachable torque-transmitting elements which transmit torque between the rotor and the extruder worm and which can be detached when refitting occurs.