--- title: Your classroom computer order: 0 --- This computer is set up for one thing: running your room. It switches itself on into the classroom, and there is nothing on it to break. You do not need a password. You do not need to sign in. You do not need to shut it down at the end — leave it on. ## The bar along the bottom Everything you need is on the bar at the bottom of the screen. The buttons in the middle are the things you can open. Which ones are there depends on what your room is set up for, so your bar may have fewer buttons than another room's. The right-hand end shows the network, the volume, any messages and the clock. To open something, click its button once. To come back to it later, click the same button again.