Protection from cookies are explained in the Tor Browser design document as well

wiki/src/doc/anonymous_internet/Tor_Browser.mdwn

@@ -97,8 +97,14 @@ We consider this as a necessary compromise between security and usability and as
 of today we are not aware of any JavaScript that would compromise Tails
 anonymity.
 
-For more technical details you can refer to the [<span class="application">Tor Browser</span> design
-document](https://www.torproject.org/projects/torbrowser/design/).
+<div class="note">
+
+<p>To understand better the behavior of <span class="application">Tor
+Browser</span>, for example regarding JavaScript and cookies, you can
+refer to the <a href="https://www.torproject.org/projects/torbrowser/design/">
+<span class="application">Tor Browser</span> design document</a>.</p>
+
+</div>
 
 <a id="noscript"></a>