X-Particles 4 ships with 51 different Actions. These actions are grouped into four types as follows:
These actions affect X-Particles objects to change the object settings. They may also change certain particle data (e.g. see the Change Trails action).
These actions only control a modifier, usually only to the extent of activating or deactivating it for a particular particle.
These actions have a dual role. They can change particle data directly, such as the speed or radius. But they can also control an associated modifier in the same way as the Control Modifier actions.
A group of miscellaneous that don't seem to fit anywhere else! This includes an action to change the editor display (which is also available in the interface of all other actions).