-selection, etc.
-
-This document assumes the SP is used, and explains how to go about
-making a set of targets (a "library") available, how to connect your
-MKWS application to that library, and how to choose which of the
-available targets to use.
+selection, etc. This document assumes the SP is used, and explains how
+to go about making a set of targets (a "library") available, how to
+connect your MKWS application to that library, and how to choose which
+of the available targets to use.
+
+By default MKWS configures itself to use an account on a service
+hosted by `sp-mkws.indexdata.com`. By default, it sends no
+authentication credentials, allowing the appropriate account to be
+selected on the basis of referring URL or IP address.
+
+If no account has been set up to recognise the referring URL of the
+application or the IP address of the client, then a default "MKWS
+Demo" account is used. This account (which can also be explicitly
+chosen by using the username `mkws`, password `mkws`) provides access
+to about a dozen free data sources.