 So, you just need your fill. Not a problem. DT just means smoothness, the higher the value, the more choppy the effect will be. The lower spawn speed, the bigger the delay between when you click and when the particle starts to grow. Normally, it will fill the area that is parallel with the faces that you started to fill. However, if you increase the max-derive angle, it will start to climb up and down walls and angles. The bigger particle life, the longer the particles will last. The more the speed, the faster the particles will travel before their life ends. And honestly, I've never really needed to change the reset times, but you can mess with those here. And spawn rate factor determines how many particles get created. Hope that helps, and as always, hope you have a fantastic day, and I'll see you around.