Well, that seems to work ,but I wouldn’t think that would be the best way for lots of grass on a big map. I wonder the reason for the “hair.blend” example?
The modifier to make it real object works. It’s a way to quickly distribute grass with vertex groups, it’s good for small level games or grass on some places only.
For other people wanting to go big about terrain system and performance and tools, they must wait or use something else.