Convert a lone double-quote to &dquot; so it won't confuse the heck out

of syntax highlighting editors; remove a redundant copyright notice;
answer a frequently asked question about /dev/null.

en_US.ISO8859-1/books/faq/book.sgml

@@ -10016,9 +10016,9 @@ CCP: Received Terminate Ack (1) state = Req-Sent (6)</programlisting>
             interpret strings such as
             <literal>set phone "123 456 789"</literal> correctly (and
             realize that the number is actually only
-            <emphasis>one</emphasis> argument. In order to specify
-            a <literal>"</literal> character, you must escape it using a
-            backslash (<literal>\</literal>).</para>
+            <emphasis>one</emphasis> argument. In order to specify a
+            <literal>&dquot;</literal> character, you must escape it
+            using a backslash (<literal>\</literal>).</para>
 
           <para>When the chat interpreter parses each argument, it
             re-interprets the argument in order to find any special
@@ -11826,11 +11826,65 @@ raisechar=^^</programlisting>
             "Hang on, shouldn't there be '1 to document it.' in that list somewhere?"</emphasis></para>
 
           <para><emphasis>And then I was enlightened :-)</emphasis></para>
-
-          <para><emphasis>This entry is Copyright (c) 1999 &a.des;.
-            Please do not reproduce without attribution.</emphasis></para>
         </answer>
       </qandaentry>
+      
+      <qandaentry>
+        <question id="dev-null">
+          <para>Where does data written to <filename>/dev/null</filename>
+	    go?</para>
+        </question>
+        <answer>
+          <para>It goes into a special data sink in the CPU where it
+            is converted to heat which is vented through the heatsink
+            / fan assembly.  This is why CPU cooling is increasingly
+            important; as people get used to faster processors, they
+            become careless with their data and more and more of it
+            ends up in <filename>/dev/null</filename>, overheating
+            their CPUs.  If you delete <filename>/dev/null</filename>
+            (which effectively disables the CPU data sink) your CPU
+            may run cooler but your system will quickly become
+            constipated with all that excess data and start to behave
+            erratically.  If you have a fast network connection you
+            can cool down your CPU by reading data out of
+            <filename>/dev/random</filename> and sending it off
+            somewhere; however you run the risk of overheating your
+            network connection and <filename>/</filename> or angering
+            your ISP, as most of the data will end up getting
+            converted to heat by their equipment, but they generally
+            have good cooling, so if you don't overdo it you should be
+            OK.</para>
+
+	  <para><emphasis>Paul Robinson adds:</emphasis</para>
+
+	  <para>There are other methods. As every good sysadmin knows,
+            it is part of standard practise to send data to the screen
+            of interesting variety to keep all the pixies that make up
+            your picture happy. Screen pixies (commonly mis-typed or
+            re-named as 'pixels') are categorised by the type of hat
+            they wear (red, green or blue) and will hide or appear
+            (thereby showing the colour of their hat) whenever they
+            receive a little piece of food. Video cards turn data into
+            pixie-food, and then send them to the pixies - the more
+            expensive the card, the better the food, so the better
+            behaved the pixies are. They also need constant simulation
+            - this is why screen savers exist.</para>
+
+          <para>To take your suggestions further, you could just throw
+            the random data to console, thereby letting the pixies
+            consume it. This causes no heat to be produced at all,
+            keeps the pixies happy and gets rid of your data quite
+            quickly, even if it does make things look a bit messy on
+            your screen.</para>
+
+          <para>Incidentally, as an ex-admin of a large ISP who
+            experienced many problems attempting to maintain a stable
+            temperature in a server room, I would strongly discourage
+            people sending the data they don't want out to the
+            network. The fairies who do the packet switching and
+            routing get annoyed by it as well.</para>
+	</answer>
+      </qandaentry>
     </qandaset>
   </chapter>