Add a pointer to the "Encrypting Swap Space" section to the

"Adding Swap Space" section.

en_US.ISO8859-1/books/handbook/config/chapter.sgml

@@ -2302,6 +2302,10 @@ kern.maxvnodes: 100000</programlisting>
       space: adding a new hard drive, enabling swap over NFS, and
       creating a swap file on an existing partition.</para>
 
+    <para>For information on how to encrypt swap space, what options
+      for this task exist and why it should be done, please refer to
+      <xref linkend="swap-encrypting"> of the Handbook.</para>
+
     <sect2 id="new-drive-swap">
       <title>Swap on a New Hard Drive</title>