Ooh...what does this button do?
Include spot features
What button? It looks like you are creating a terrain from a point cloud, but you do not mention what button you are talking about.
I have tried to create a terrain from point cloud, with and without this checked - and it seems to make no difference in this case. For me, all point cloud data are spot features. I will update this post once I get answer to this question.
it seems not documented at least not sure in which product documentation it is explained.
I could not find anything in the ORD documentation about this either - which is why I have asked internally for some clarification.