The particles tab is broken into three areas.
Particle Systems: Actually creates the particle systems. Spray, SuperSpray, PArray, Snow, Blizzard, PCloud
Forces: Direct forces acting like natural environmental forces on the particles in the systems. Gravity, Wind, Motor, PBomb, Push
Forces 2: Slightly more indirect "universal" forces that deflect particles away from objects/areas based on the laws of the deflector's behavior/gravitation. Deflector, POmniFlect, SDeflector, SOmniFlect, UDeflector, UOmniFlect, Path_Follow


