Press spacebar to toggle animation.
Press up/down arrows to adjust simulation speed.
Press right/left arrows to go forward/backward in the animation.
Press 'p' to toggle paths on/off.
Press 'P' to toggle efficient path trace on/off.
Press S/s to increase/decrease star size.
Press X/x to increase/decrease star streak length.
Press U/u to increase/decrease arrow scale.
Press 'f' to toggle between inertial, rotating, and counter-rotating frames.
Press 't' to toggle star streaks.
Press 'a' to toggle arrows.
Press 'r' to reset simulation.
Press 'm' to increase the maximum number of path segments.