How to use precipitation.dle?

[srwing]

I was wondering if anyone has any information about the precipitation.dle file in the Vizard plug-ins directory? I can not find any documentation on the use of this file and am wondering how to use it effectively and/or what kind of settings are available.


This is what I have so far :
precip = viz.add('precipitation.dle')
snow = precip.snow(1) #Create snow with intensity of 1
snow.setSpeed(0.0001)