The strength of the repulsor (maximum acceleration it can apply to a missile)
*affectDist
The effective distance at which the missile can be affected. The effect of the attractor falls off from to zero from the center to this distance away from the center.
[affectAllProjectiles]
If set it will affect all projectiles inculding grenades and guided missiles.
[alert range]
If set it send notify when missile breaches range(but will not repulse).