-*** A new Message command for deleting text in the body of a message
-outside the region: `C-c C-v'.
+It is enabled by default (see `password-cache'), with a short timeout
+of 16 seconds (see `password-cache-expiry'). If PGG is used as the
+PGP backend, the PGP passphrase is managed by this mechanism.
+Passwords for ManageSieve connections are managed by this mechanism,
+after quering the user about whether to do so.