The number of frames computed per the number of frames displayed. The factor to multiply mouse motions by. If a scene is very large, then the mouse will do translation very slowly, so increase this numer. If the scene is small, decrease this number. The program calculates physics for spheres and boxes.
Angular velocity is taken into account as well.
It utilizes the coefficients of friction. Angular velocity is not seen in spheres, except for the effect it has of causing the spheres to roll if they are on the ground. No magnetism is accounted for.