I wrote a post earlier this month updating a general facility for using WebGL for making interactive Earth plots, Google-Earth style. I have now created a web page here which I hope to maintain which documents it. The page is listed near the bottom of the list at top right. I expect to be using the facility a lot in future posts. It has new features since the last post, but since I don't think anyone else has used that yet, I'll still call the new version V2. It should be compatible with the earlier.