Does that little red light mean we are recording?

     I remember in Goldwyn Dubbing Room C, being a little girl and camping out under the ping pong table. Now, I am guessing Dad planted this in my head but everytime that red light would come on under the screen I would hold my breath and not move, thinking that what ever noise I would make would end up on screen. Way to trick your daughter Dad! Guess it kept me quiet though. LOL