General tab menu for xpAttractor.
Checking this box activates xpAttractor.
Set at Independent, by default.
You can change this to Action-Controlled.
In this mode, particles will be affected if they come into the field of effect of the modifier.
When in the Action-Controlled Mode setting, the modifier will only act on a particle when told to do so by an action.
There are two types of operation: Velocity (the default) and Force.
In this mode, the modifier will take complete control over the speed of the particles.