Tutorial should mention Snapshots of Folders [NOTED]

The Tutorial should mention whether Snapshots of folders – or of documents with subdocuments – work with the entire tree or just that single document.

For instance, while you can take a Snapshot of a Folder, you can not take a Snapshot of the entire Draft. Why? Does it mean that Snapshots of Folders don’t really work as expected?

I’d like snapshots to work for entire trees (including the entire Draft), but one way or another it should be documented how it is supposed to work.