Some viewers can store and read windlight settings from notecard stored in inventory and named, say, "Places Kunming.wl". These notecard contains the windlight (sky settings) xml.
So people can share sky settings with each other.
Also "Advanced Sky" dialog, when the sky is setted up, there is a "Save to inventory" button.
Would be really cool if CoolVL also supported this.
Here's the sample of xml