When you first start, press the left arrow key to make the black hole spin counter clock wise, and press the right for it to spin clock wise. Then, press the opposite key you first pressed to slow it down, and vise versa. Press the up arrow to make it bigger, and the down key to make it smaller.
EXPLANATION: The rotation speed is how fast the Black hole Spins, also affecting the matter around it. MPs- miles per second. The Density is How much mass is in a cubed meter. It also affects how fast the matter around the black hole will speed towards it. The Mass is how big it is. THIS IS REAL.
