Control-click and drag to zoom in/out.
	Right-click and drag to translate the camera.
	Click on a particle to select it, drag to move it around.
	P: Add a particle of charge +2.
	N: Add a particle of charge -2.
	+: Increase the charge on the selected particle.
	-: Decrease the charge on the selected particle.
	X: Delete the selected particle.
	F: Toggle fieldlines on selected particle.
	]: Pause the the simulation.
	I: Show/Hide instructions.
	M: Generate a potential map (Simulation must be paused)
	NOTE: Generating a potential map may take a few seconds, depending on the number of particles in the simulation and CPU speed.