-It uses the authenticator specified when opening the server. If the
-authenticator requires username/passwords, they are queried from the
-user and optionally stored in the buffer. If USER and/or PASSWD is
-specified, the user will not be questioned and the username and/or
-password is remembered in the buffer."
+It uses the authenticator specified when opening the server.
+
+Optional arguments USER and PASSWD specify the username and
+password to use if the authenticator requires a username and/or
+password. If omitted or nil, the authenticator may query the
+user for a username and/or password."