| t | Time period in seconds to advance the ParticleSystem simulation by. If restart is true, the ParticleSystem will be reset to 0 time, and then advanced by this value. If restart is false, the ParticleSystem simulation will be advanced in time from its current state by this value. | 
                  
| withChildren | Fastforward all child particle systems as well. | 
| restart | Restart and start from the beginning. | 
| fixedTimeStep | Only update the system at fixed intervals, based on the value in "Fixed Time" in the Time options. | 
Fastforwards the particle system by simulating particles over given period of time, then pauses it.