| t | Time period in seconds to advance the ParticleSystem simulation by. If restartis true, the ParticleSystem will be reset to 0 time, and then advanced by this value. Ifrestartis false, the ParticleSystem simulation will be advanced in time from its current state by this value. | 
| withChildren | Fast-forward all child Particle Systems as well. | 
| restart | Re-inicia y se empieza desde el inicio. | 
| fixedTimeStep | Solamente actualiza el sistema en intervalos fijos, basándose en el valor en "Fixed Time" en las opciones de Tiempo. | 
Fast-forwards the Particle System by simulating particles over the given period of time, then pauses it.