+Alternately, they can go under the main domain by including @--@:
+
+<pre>
+ Services:
+ WebDAV:
+ ExternalURL: https://*--collections.ClusterID.example.com
+</pre>
+
+h4. From a single domain
+
+Serve preview links from a single domain, setting uuid or pdh in the path (similar to downloads). This configuration only allows previews of public data or collection-sharing links, because these use the anonymous user token or the token is already embedded in the URL. Authenticated requests will always result in file downloads from @Services.WebDAVDownload.ExternalURL@.
+
+<pre>
+ Services:
+ WebDAV:
+ ExternalURL: https://collections.ClusterID.example.com
+</pre>
+
+h2(#update-config). Configure anonymous user token
+
+{% assign railscmd = "bundle exec ./script/get_anonymous_user_token.rb --get" %}
+{% assign railsout = "zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz" %}
+If you intend to use Keep-web to serve public data to anonymous clients, configure it with an anonymous token. Use the following command on the <strong>API server</strong> to create an anonymous user token. {% include 'install_rails_command' %}