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Particle System Forces
... 
This article contains speculation that needs to be confirmed.
Particle System Forces apply a force to your particle system.
Pull towards control point
Applies a force around a control point. Internal?
- amount of force
- Amount of force applied to particles.
- falloff power
- Determines how long of a range from the control point to stop applying the force.
- control point number
- Which control point to apply the force around.
random force
Applies a random velocity on all particles.
- min force
- Minimum force to apply, in XYZ format
- max force
- Maximum force to apply, in XYZ format
twist around axis
Twists particles around a certain axis
- amount of force
- Amount of force to apply when a particle is near the axis
- twist axis
- Location of the axis in XYZ format
- object local space axis 0/1
- If 1, uses local space axis. If 0, uses world axis?
Note:If 0 it seems to work fine...