+Set the volume.
+.TP
+.B setup-guest \fR[\fB--no-online-registration\fR]
+Create the "guest" user for use by the web interface. This user will have no
+password and will only have the "read" and "register" rights, the latter
+allowing new users to automatically register themselves via the web interface.
+.IP
+With the option \fB--no-online-registration\fR, the "register" right is
+suppressed and users must be manually created by an administrator.
+.IP
+If online registration is desired then \fBmail_sender\fR must be set in the
+configuration file. See \fBdisorder_config\fR(5).