From VFXPedia

pFriction [pFr]
	The pFriction tool applies resistance to the motion of a particle, slowing the particle's motion through a defined region. This tool produces two types of Friction. One type reduces the Velocity of any particle intersecting/crossing the defined region, and one reduces or eliminates spin and rotation.

Controls Tab

This value represents the Friction force applied to the particle's Velocity. The larger the value, the greater the Friction, thus slowing down the particle.

This value represents the Friction force applied to the particle's rotation or Spin. The larger the value, the greater the friction, thus slowing down the rotation of the particle.

Tips for pFriction (edit)

EyeonTips:Manual/Tool Reference/Particles/pFriction

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