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+This module implements the version 7 UUIDs, proposed by Peabody and
+Davis in
+https://www.ietf.org/id/draft-peabody-dispatch-new-uuid-format-02.html
+as an extension to RFC4122.
+
+Version 7 has the nice characteristic that the start of a UUID encodes
+the time with a chronological sort order and potentially ~50ns time
+resolution, while the end of the UUID includes sufficient random bits
+to ensure consecutive UUIDs will remain unique.