The three arms on either side allow me to lower the table top onto my bed when I want to work on puzzles or other things...
...then raise it up to the ceiling when I want to go to sleep.
The top of the table is designed to rest snugly on the outer frame and will not move on its own when in the raised position. Even so, I secure it in place with a bungee cord to keep it from crashing down on me during the night.
The reason the desk and only the desk is black is because of something I remembered from my days in wood shop. After we finished each project, our teacher would cover it with a clear coat of spray paint to seal all minor cracks. I thought this would be a good idea since the plywood boards weren't of very high quality and I didn't want to get any splinters while working. We didn't have any clear spray paint, so I chose to make the desk black, if for no other reason that to look like Master Control from the movie Tron.
The project on the near side of the desk is a puzzle given to me by Trolley, and the papers on the far side are the products of my latest en devour: teaching myself discrete mathematics using an "obsolete" textbook that TOME was giving away. I'm probably never going to take the class at school, so I might as well learn the stuff now. I'll have no computer major outsmarting me!