**Continuous Flow** | C | If true, particles will be emitted every Rth timestep.
If false, N particles will be emitted once. | Boolean |

**Creation Rate** | R | Rate at which new Quelea are created. Every Rth timestep. | Integer |

**Number of Quelea** | N | The number of Quelea that are allowed to be alive in the system at once. | Integer |

**Minimum Initial Velocity** | mV | The minimum initial velocity from which a random value will be taken. | Vector |

**Maximum Initial Velocity** | MV | The maximum initial velocity from which a random value will be taken. | Vector |

**Surface** | S | Surface for emitter. | Surface |