-dit(bf(--ignore-existing)) This tells rsync to skip updating files (i.e.
-non-directory items) that
-already exist on the destination. See also bf(--existing).
+dit(bf(--ignore-existing)) This tells rsync to skip updating files that
+already exist on the destination (this does em(not) ignore existing
+directores, or nothing would get done). See also bf(--existing).