Snapshots work almost exactly as before, but with one important and exciting change. They are now searchable!
To me, one of the biggest weaknesses in previous versions of Scrivener was that you could capture versions of a document, but those versions were not searchable at the project level. No longer.
To search for specific text within your snapshots, go to Documents>Snapshots>Show Snapshots Manager. Type the word or words you’d like to find in the Search box at the top left. The list of snapshots changes to show only those with a match.