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.
	Enter desired values in the fields for dimension, position, and velocity for each lattice. Press "Start" to start the simulation. Press "Clear" to reset the simulation.