diff --git a/FAQ/FAQ.sgml b/FAQ/FAQ.sgml
index 31eb1a0d62..1d3c091d52 100644
--- a/FAQ/FAQ.sgml
+++ b/FAQ/FAQ.sgml
@@ -1,7 +1,8 @@
-<!-- $Id: FAQ.sgml,v 1.95 1998-04-14 09:55:30 wosch Exp $ -->
+<!-- $Id: FAQ.sgml,v 1.96 1998-05-08 09:19:06 wosch Exp $ -->
 <!-- The FreeBSD Documentation Project -->
 
 <!DOCTYPE linuxdoc PUBLIC "-//FreeBSD//DTD linuxdoc//EN" [
+<!ENTITY % includes SYSTEM "includes.sgml"> %includes;
 <!ENTITY preface SYSTEM "preface.sgml">
 <!ENTITY install SYSTEM "install.sgml">
 <!ENTITY hardware SYSTEM "hardware.sgml">
@@ -25,7 +26,7 @@
     <name>The FreeBSD Documentation Project</name>
   </author>
 
-  <date>$Date: 1998-04-14 09:55:30 $</date>
+  <date>$Date: 1998-05-08 09:19:06 $</date>
 
   <abstract>
     This is the FAQ for FreeBSD systems version 2.X  All entries are
diff --git a/FAQ/includes.sgml b/FAQ/includes.sgml
new file mode 100644
index 0000000000..4531dcf12d
--- /dev/null
+++ b/FAQ/includes.sgml
@@ -0,0 +1,6 @@
+<!-- $Id: includes.sgml,v 1.1 1998-05-08 09:19:07 wosch Exp $ -->
+
+<!-- book stores -->
+<!ENTITY isbn.amazon 'http://www.amazon.com/exec/obidos/ASIN'>
+
+
diff --git a/FAQ/preface.sgml b/FAQ/preface.sgml
index 856d99af57..9e623e5920 100644
--- a/FAQ/preface.sgml
+++ b/FAQ/preface.sgml
@@ -1,4 +1,4 @@
-<!-- $Id: preface.sgml,v 1.8 1998-04-27 16:13:59 wosch Exp $ -->
+<!-- $Id: preface.sgml,v 1.9 1998-05-08 09:19:08 wosch Exp $ -->
 <!-- The FreeBSD Documentation Project -->
 
   <sect>
@@ -393,27 +393,27 @@
         <item>4.4BSD System Manager's Manual <newline>
         By Computer Systems Research Group, UC Berkeley <newline>
         1st Edition June 1994, 804 pages <newline>
-        ISBN: 1-56592-080-5 <newline>
+        <url url="&isbn.amazon/1-56592-080-5" name="ISBN">: 1-56592-080-5 <newline>
 
         <item>4.4BSD User's Reference Manual <newline>
         By Computer Systems Research Group, UC Berkeley <newline>
         1st Edition June 1994, 905 pages <newline>
-        ISBN: 1-56592-075-9 <newline>
+        <url url="&isbn.amazon/1-56592-075-9" name="ISBN">: 1-56592-075-9 <newline>
 
         <item>4.4BSD User's Supplementary Documents <newline>
         By Computer Systems Research Group, UC Berkeley <newline>
         1st Edition July 1994, 712 pages <newline>
-        ISBN: 1-56592-076-7 <newline>
+        <url url="&isbn.amazon/1-56592-076-7" name="ISBN">: 1-56592-076-7 <newline>
 
         <item>4.4BSD Programmer's Reference Manual <newline>
         By Computer Systems Research Group, UC Berkeley <newline>
         1st Edition June 1994, 886 pages <newline>
-        ISBN: 1-56592-078-3 <newline>
+        <url url="&isbn.amazon/1-56592-078-3" name="ISBN">: 1-56592-078-3 <newline>
 
         <item>4.4BSD Programmer's Supplementary Documents <newline>
         By Computer Systems Research Group, UC Berkeley <newline>
         1st Edition July 1994, 596 pages <newline>
-        ISBN: 1-56592-079-1 <newline>
+        <url url="&isbn.amazon/1-56592-079-1" name="ISBN">: 1-56592-079-1 <newline>
       </itemize>
 
       <p>A description of these can be found via WWW as:
@@ -429,13 +429,13 @@
 
       <p><em>The Design and Implementation of the 4.4BSD Operating
       System</em>.  Reading, Mass. : Addison-Wesley, 1996.<newline>
-      ISBN 0-201-54979-4<newline>
+      <url url="&isbn.amazon/0-201-54979-4" name="ISBN"> 0-201-54979-4<newline>
 
       <p>A good book on system administration is:
 
       <p>Evi Nemeth, Garth Snyder, Scott Seebass &amp; Trent R. Hein,<newline>
       ``Unix System Administration Handbook'', Prentice-Hall, 1995<newline>
-      ISBN: 0-13-151051-7<newline>
+      <url url="&isbn.amazon/0-13-151051-7" name="ISBN">: 0-13-151051-7<newline>
 
       <p><bf/NOTE/ make sure you get the second edition, with a red cover,
       instead of the first edition.