-queried for a key associated with the host URI (see HOST URIs),
-querying a keyserver if specified. If a key is found, it will be
-converted to an ssh key, and any matching ssh keys will be removed
-from the user's known_hosts file. If the found key is acceptable (see
-KEY ACCEPTABILITY), then the key will be updated and re-added to the
-known_hosts file. If no gpg key is found for the host, then nothing
-is done. If no hosts are specified, all hosts listed in the
-known_hosts file will be processed. `k' may be used in place of
-`update-known_hosts'.
+queried for a key associated with the host URI (see HOST
+IDENTIFICATION in monkeysphere(5)), optionally querying a keyserver.
+If an acceptable key is found for the host (see KEY ACCEPTABILITY in
+monkeysphere(5)), the key is added to the user's known_hosts file. If
+a key is found but is unacceptable for the host, any matching keys are
+removed from the user's known_hosts file. If no gpg key is found for
+the host, nothing is done. If no hosts are specified, all hosts
+listed in the known_hosts file will be processed. This subcommand
+will exit with a status of 0 if at least one acceptable key was found
+for a specified host, 1 if no matching keys were found at all, and 2
+if matching keys were found but none were acceptable. `k' may be used
+in place of `update-known_hosts'.