-although this requires also doing the transfer with -I to avoid skipping
-files that haven't changed). This option increases the usefulness of
---partial because partially transferred files will remain in the new
-temporary destination until they have a chance to be completed. If DIR is
-a relative path, it is relative to the destination directory.
+although this skips files that haven't changed; see also --link-dest).
+This option increases the usefulness of --partial because partially
+transferred files will remain in the new temporary destination until they
+have a chance to be completed. If DIR is a relative path, it is relative
+to the destination directory.
+
+dit(bf(--link-dest=DIR)) This option behaves like bf(--compare-dest) but
+also will create hard links from em(DIR) to the destination directory for
+unchanged files. Files with changed ownership or permissions will not be
+linked.