+"Please choose the user authentication mode. By default Citadel will use its "
+"own internal user accounts database. If you choose Host, Citadel users will "
+"have accounts on the host system, authenticated via /etc/passwd or a PAM "
+"source. LDAP chooses an RFC 2307 compliant directory server, the last option "
+"chooses the nonstandard MS Active Directory LDAP scheme."
+"\n"
+"Do not change this option unless you are sure it is required, since changing "
+"back requires a full reinstall of Citadel."