the inner set opening and closing automatically Hmm, now this part I'm pretty sure on -- the inner doors, once you entered the console room, at least during Tom Baker's stay, were controlled through a thing that looked like an oversized joystick with a big red ball (okay, a big grey ball, but it seemed red to me) on the side near the door. This pushed outwards to open and inwards to close, which was useful as it was often used by people like Turlough charging into the TARDIS with some large nasty evil thing on their heels and pushing the lever in was in accordance with their direction of momentum, so they'd come crashing in, hit the lever and close the door, and then sirt of hang there on the lever like a gimp.