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P3D v5 Change overall size of an effect

I need to create a fire on a single tree. So I pulled out studying the SDK. Luckily there is a fire effect example that I am studying using P3D's FX tool. Changing some of the values I can see the results in real time. The one value 'Radius", is that for the overall size of the effect? The test fire is set at 1000 (meters I imagine), yet when I change it to 5 or 10 nothing changes that I can see.

Is there a simple way to change the overall size of an effect or do I need to go into each emitter and and particle and change individual values?

Thx Clutch

Oh, I see there is an FSEditor that I guess Arno created... I will start looking at that but my question still remains.

After further review it appears one has to resize each emitter/particle as opposed to a single adjustment which would perform this. (someone correct me if I am wrong here!). Still do not understand then what is the Radius option?
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The maximal size of the effect. You must give an effect a radius for it to show up as scenery. Measured in meters.