+<p>The Javascript machinery on this page was written by Mark Wooding;
+the text was written by Mark Wooding and Gary Wooding. The data used
+to derive the computation was provided by Gary Wooding.
+
+<h3 id="privacy">Privacy</h3>
+
+<p>There are no cookies or other trackers here. This page does not use
+externally hosted scripts, fonts, images, or anything else. The server
+has logged your IP address, which helps me fix things if they go wrong;
+mostly things work fine and the logs are discarded after a couple of
+weeks.
+
+<p>Most web browsers can save a version of this page which can be used
+offline.
+