Trapcode Particular
World Transform is like a set of global Transform properties for Particular. These parameters let you change the position and rotation of all particle systems together. World Transform changes the camera perspective without moving the camera in the scene. In other words, you don't have to move the After Effects camera to move the particles, which frees you to do a lot of interesting animation.
Since World Transform moves Particular systems only, any other layers to which it reacts, such as Bounce Layers, will not move with it.
World Rotation parameters set the rotation movement of the entire particle system.
World Offset parameters set the positional movement of the entire particle system.