diff --git a/en_US.ISO8859-1/books/faq/book.sgml b/en_US.ISO8859-1/books/faq/book.sgml
index a5586f3f7a..bfc52a0dfd 100644
--- a/en_US.ISO8859-1/books/faq/book.sgml
+++ b/en_US.ISO8859-1/books/faq/book.sgml
@@ -7282,7 +7282,7 @@ define(`confDELIVERY_MODE',`deferred')dnl</programlisting>
 	  <para>What do the various memory states displayed by
 	    <command>top</command> mean?</para>
         </question>
-
+<!-- Provided by John Dyson via Usenet -->
         <answer>
           <itemizedlist>
             <listitem><para><literal>Active</literal>: pages recently
@@ -7337,6 +7337,28 @@ define(`confDELIVERY_MODE',`deferred')dnl</programlisting>
             described.</para>
         </answer>
       </qandaentry>
+
+      <qandaentry>
+        <question id="free-memory-amount">
+	  <para>How much free memory is available</para>
+        </question>
+<!-- Provided by John Dyson via Usenet -->
+        <answer>
+          <para>There are a couple of kinds of <quote>free
+            memory</quote>.  One kind is the amount of memory
+            immediately available without paging anything else out.
+            That is approximately the size of cache queue + size of
+            free queue (with a derating factor, depending upon system
+            tuning.)  Another kind of <quote>free memory</quote> is
+            the total amount of <acronym>VM</acronym> space.  That can
+            be complex, but is dependent upon the amount of swap space
+            and memory.  Other kinds of <quote>free memory</quote>
+            descriptions are also possible, but it is relatively
+            useless to define these, but rather it is important to
+            make sure that the paging rate is kept low, and to avoid
+            running out of swap space.</para>
+        </answer>
+      </qandaentry>
     </qandaset>
   </chapter>