diff --git a/docs/enduser-tidy.html b/docs/enduser-tidy.html
index 607c438a..cc04834c 100644
--- a/docs/enduser-tidy.html
+++ b/docs/enduser-tidy.html
@@ -16,6 +16,11 @@
 <div id="index">Return to the <a href="index.html">index</a>.</div>
 <div id="home"><a href="http://htmlpurifier.org/">HTML Purifier</a> End-User Documentation</div>
 
+<div id="applicability">
+  This document covers currently unreleased functionality and
+  only applies to recent SVN checkouts.
+</div>
+
 <p>You've probably heard of HTML Tidy, Dave Raggett's little piece
 of software that cleans up poorly written HTML.  Let me say it straight
 out:</p>
diff --git a/docs/style.css b/docs/style.css
index 9751a026..db2dd7d7 100644
--- a/docs/style.css
+++ b/docs/style.css
@@ -67,3 +67,5 @@ q:after {
 /* Marks off sections that are lacking. */
 .fixme {margin-left:2em; }
 .fixme:before {content:"Fix me: "; font-weight:bold; color:#C00; }
+
+#applicability {margin: 1em 5%; font-style:italic;}