-// At the present time you can have REGISTER_OPEN
-// or REGISTER_CLOSED. But register your personal account
-// first before you close it.
+// Your choices are REGISTER_OPEN, REGISTER_APPROVE, or REGISTER_CLOSED.
+// Be certain to create your own personal account before setting
+// REGISTER_CLOSED. 'register_text' (if set) will be displayed prominently on
+// the registration page. REGISTER_APPROVE requires you set 'admin_email'
+// to the email address of an already registered person who can authorise
+// and/or approve/deny the request.