[Kevin Sevcik]

That mostly sounds like a solenoid to me. They have a iron core that retracts when voltage is applied to an electromagnet coil. At any rate, you should pay attention to <R59> not <R60> 59 tells you exactly what you're allowed to use. 60 lists a few things you most definitely can't, but you can't really expect the GDC to list every single kind of actuator they don't want you to use. I mean, they don't mention voice coils, ultrasonic actuators, electric clutches, magnetorheological shocks.....