Add faq 102

Signed-off-by: Tom Eastep <teastep@shorewall.net>

docs/FAQ.xml

@@ -247,7 +247,7 @@ DNAT    net:<emphasis>address</emphasis>   loc:<emphasis>local-IP-address</empha
         <itemizedlist>
           <listitem>
             <para>You are trying to test from inside your firewall (no, that
-            won't work -- see <xref linkend="faq2"/>).</para>
+            won't work -- see <xref linkend="faq2" />).</para>
           </listitem>
 
           <listitem>
@@ -2974,7 +2974,7 @@ Shorewall has detected the following iptables/netfilter capabilities:
    Persistent SNAT: Available
 gateway:~# </programlisting>
 
-      <para/>
+      <para></para>
     </section>
 
     <section id="faq19">
@@ -3167,5 +3167,16 @@ EXT_IF:192.168.1.1	     	0.0.0.0/0		192.168.1.254
         </listitem>
       </orderedlist>
     </section>
+
+    <section>
+      <title id="faq102">(FAQ 102) What is 'qt'? I see it in some of the older
+      documentation.</title>
+
+      <para><emphasis role="bold">Answer</emphasis>: 'qt' stands for 'quiet';
+      qt() is a shell function that accepts a command with arguments as
+      parameters. It redirects both standard out and standard error to
+      /dev/null. It is defined in the Shorewall-core shell library
+      lib.common.</para>
+    </section>
   </section>
 </article>