Yes, for each imput you gave they went all the way then back to neutral when released.
But if you gave a very short (in time) input, servos could not reach full travel so that's was the way to vary the amount.Of course to mantain a continuous partial command you had to continuosly "blip", the fastest you did, the lesser the amount of travel.
For engine control, servos did not neutralize so each quick blip vas a little step.Or you hold till full travel.
Understanding this nowadays put those great flyers of the past in a different light ....