diff --git a/en_US.ISO8859-1/books/developers-handbook/introduction/chapter.sgml b/en_US.ISO8859-1/books/developers-handbook/introduction/chapter.sgml
index 94cc1f5291..161ef53a8e 100644
--- a/en_US.ISO8859-1/books/developers-handbook/introduction/chapter.sgml
+++ b/en_US.ISO8859-1/books/developers-handbook/introduction/chapter.sgml
@@ -8,13 +8,13 @@
   <chapterinfo>
     <authorgroup>
       <author>
-        <firstname>Murray</firstname>
-        <surname>Stokely</surname>
-        <contrib>Contributed by </contrib>
+	<firstname>Murray</firstname>
+	<surname>Stokely</surname>
+	<contrib>Contributed by </contrib>
       </author>
       <author>
-        <firstname>Jeroen</firstname>
-        <surname>Ruigrok van der Werven</surname>
+	<firstname>Jeroen</firstname>
+	<surname>Ruigrok van der Werven</surname>
       </author>
     </authorgroup>
   </chapterinfo>
@@ -33,7 +33,6 @@
       profession.  The information in this chapter might be aimed
       toward the beginning programmer; indeed, it could serve useful
       for the programmer unfamiliar with the &os; platform.</para>
-
   </sect1>
 
   <sect1 id="introduction-bsdvision">
@@ -44,188 +43,214 @@
       ideology as well as usability, performance and
       stability.</para>
   </sect1>
- 
+
   <sect1 id="introduction-archguide">
     <title>Architectural Guidelines</title>
 
     <para>Our ideology can be described by the following
-    guidelines</para>
+      guidelines</para>
 
     <itemizedlist>
 
-      <listitem><para>Do not add new functionality unless an
-        implementor cannot complete a real application without
-        it.</para></listitem>
+      <listitem>
+	<para>Do not add new functionality unless an implementor
+	  cannot complete a real application without it.</para>
+      </listitem>
 
-      <listitem><para>It is as important to decide what a system is
-        not as to decide what it is. Do not serve all the world's
-        needs; rather, make the system extensible so that additional
-        needs can be met in an upwardly compatible
-        fashion.</para></listitem>
+      <listitem>
+	<para>It is as important to decide what a system is
+	  not as to decide what it is.  Do not serve all the world's
+	  needs; rather, make the system extensible so that additional
+	  needs can be met in an upwardly compatible
+	  fashion.</para>
+      </listitem>
 
-      <listitem><para>The only thing worse than generalizing from one
-        example is generalizing from no examples at
-        all. </para></listitem>
+      <listitem>
+	<para>The only thing worse than generalizing from one example
+	  is generalizing from no examples at all.</para>
+      </listitem>
 
-      <listitem><para>If a problem is not completely understood, it is
-        probably best to provide no solution at all.</para></listitem>
+      <listitem>
+	<para>If a problem is not completely understood, it is
+	  probably best to provide no solution at all.</para>
+      </listitem>
 
-      <listitem><para>If you can get 90 percent of the desired effect
-        for 10 percent of the work, use the simpler
-        solution.</para></listitem>
+      <listitem>
+	<para>If you can get 90 percent of the desired effect for 10
+	  percent of the work, use the simpler solution.</para>
+      </listitem>
 
-      <listitem><para>Isolate complexity as much as
-        possible.</para></listitem>
+      <listitem>
+	<para>Isolate complexity as much as possible.</para>
+      </listitem>
 
-      <listitem><para>Provide mechanism, rather than policy. In
-        particular, place user interface policy in the client's
-        hands.</para></listitem>
-
-     </itemizedlist>
-
-     <para>From Scheifler & Gettys: "X Window System"</para>
+      <listitem>
+	<para>Provide mechanism, rather than policy.  In particular,
+	  place user interface policy in the client's hands.</para>
+      </listitem>
+    </itemizedlist>
 
+    <para>From Scheifler & Gettys: "X Window System"</para>
   </sect1>
 
   <sect1 id="introduction-layout">
-    <title>The Layout of 
+    <title>The Layout of
       <filename class="directory">/usr/src</filename></title>
 
     <para>The complete source code to FreeBSD is available from our
       public repository.  The source code is normally installed in
-      <filename class="directory">/usr/src</filename> which contains the
-      following subdirectories:</para>
+      <filename class="directory">/usr/src</filename> which contains
+      the following subdirectories:</para>
 
     <para>
       <informaltable frame="none" pgwide="1">
-        <tgroup cols="2">
+	<tgroup cols="2">
 	  <thead>
 	    <row>
 	      <entry>Directory</entry>
 	      <entry>Description</entry>
 	    </row>
 	  </thead>
-	  
+
 	  <tbody>
 	    <row>
-	    <entry><filename class="directory">bin/</filename></entry>
-            <entry>Source for files in
-            <filename>/bin</filename></entry>
+	      <entry><filename
+		  class="directory">bin/</filename></entry>
+	      <entry>Source for files in
+		<filename>/bin</filename></entry>
 	    </row>
-	    
+
 	    <row>
-	      <entry><filename class="directory">cddl/</filename></entry>
+	      <entry><filename
+		  class="directory">cddl/</filename></entry>
 	      <entry>Utilities covered by the Common Development and
 		Distribution License</entry>
 	    </row>
 
 	    <row>
-	    <entry><filename class="directory">contrib/</filename></entry>
-	    <entry>Source for files from contributed software.</entry>
+	      <entry><filename
+		  class="directory">contrib/</filename></entry>
+	      <entry>Source for files from contributed
+		software.</entry>
 	    </row>
 
 	    <row>
-	    <entry><filename class="directory">crypto/</filename></entry>
-	    <entry>Cryptographical sources</entry>
+	      <entry><filename
+		  class="directory">crypto/</filename></entry>
+	      <entry>Cryptographical sources</entry>
 	    </row>
 
 	    <row>
-	    <entry><filename class="directory">etc/</filename></entry>
-	    <entry>Source for files in <filename
-	    class="directory">/etc</filename></entry>
+	      <entry><filename
+		  class="directory">etc/</filename></entry>
+	      <entry>Source for files in <filename
+		  class="directory">/etc</filename></entry>
 	    </row>
 
 	    <row>
-	    <entry><filename class="directory">games/</filename></entry>
-	    <entry>Source for files in <filename
-	    class="directory">/usr/games</filename></entry>
+	      <entry><filename
+		  class="directory">games/</filename></entry>
+	      <entry>Source for files in <filename
+		  class="directory">/usr/games</filename></entry>
 	    </row>
 
 	    <row>
-	    <entry><filename class="directory">gnu/</filename></entry>
-	    <entry>Utilities covered by the GNU Public License</entry>
+	      <entry><filename
+		  class="directory">gnu/</filename></entry>
+	      <entry>Utilities covered by the GNU Public
+		License</entry>
 	    </row>
 
 	    <row>
-	    <entry><filename class="directory">include/</filename></entry>
-            <entry>Source for files in <filename
-            class="directory">/usr/include</filename></entry>
+	      <entry><filename
+		  class="directory">include/</filename></entry>
+	      <entry>Source for files in <filename
+		  class="directory">/usr/include</filename></entry>
 	    </row>
 
 	    <row>
-	    <entry><filename
- class="directory">kerberos5/</filename></entry>
-            <entry>Source for Kerberos version 5</entry>
+	      <entry><filename
+		  class="directory">kerberos5/</filename></entry>
+	      <entry>Source for Kerberos version 5</entry>
 	    </row>
 
 	    <row>
-	    <entry><filename class="directory">lib/</filename></entry>
-	    <entry>Source for files in <filename
-	    class="directory">/usr/lib</filename></entry>
-	    </row>
-	    
-	    <row>
-	    <entry><filename class="directory">libexec/</filename></entry>
-	    <entry>Source for files in <filename
-	    class="directory">/usr/libexec</filename></entry>
+	      <entry><filename
+		  class="directory">lib/</filename></entry>
+	      <entry>Source for files in <filename
+		  class="directory">/usr/lib</filename></entry>
 	    </row>
 
 	    <row>
-	    <entry><filename
- class="directory">release/</filename></entry>
-            <entry>Files required to produce a FreeBSD release</entry>
+	      <entry><filename
+		  class="directory">libexec/</filename></entry>
+	      <entry>Source for files in <filename
+		  class="directory">/usr/libexec</filename></entry>
 	    </row>
 
 	    <row>
-	    <entry><filename class="directory">rescue/</filename></entry>
-	    <entry>Build system for the
-	      <filename class="directory">/rescue</filename> utilities</entry>
+	      <entry><filename
+		  class="directory">release/</filename></entry>
+	      <entry>Files required to produce a FreeBSD
+		release</entry>
 	    </row>
 
 	    <row>
-	    <entry><filename class="directory">sbin/</filename></entry>
-	    <entry>Source for files in <filename
-	    class="directory">/sbin</filename></entry>
+	      <entry><filename
+		  class="directory">rescue/</filename></entry>
+	      <entry>Build system for the
+		<filename class="directory">/rescue</filename>
+		utilities</entry>
 	    </row>
 
 	    <row>
-	    <entry><filename class="directory">secure/</filename></entry>
-	    <entry>FreeSec sources</entry>
+	      <entry><filename
+		  class="directory">sbin/</filename></entry>
+	      <entry>Source for files in <filename
+		  class="directory">/sbin</filename></entry>
 	    </row>
 
 	    <row>
-	    <entry><filename class="directory">share/</filename></entry>
-	    <entry>Source for files in <filename
-	    class="directory">/usr/share</filename></entry>
+	      <entry><filename
+		  class="directory">secure/</filename></entry>
+	      <entry>FreeSec sources</entry>
 	    </row>
 
 	    <row>
-	    <entry><filename class="directory">sys/</filename></entry>
-	    <entry>Kernel source files</entry>
+	      <entry><filename
+		  class="directory">share/</filename></entry>
+	      <entry>Source for files in <filename
+		  class="directory">/usr/share</filename></entry>
 	    </row>
 
 	    <row>
-	    <entry><filename class="directory">tools/</filename></entry>
-	    <entry>Tools used for maintenance and testing of
-	    FreeBSD</entry>
+	      <entry><filename
+		  class="directory">sys/</filename></entry>
+	      <entry>Kernel source files</entry>
 	    </row>
 
 	    <row>
-	    <entry><filename
- class="directory">usr.bin/</filename></entry>
-            <entry>Source for files in <filename
- class="directory">/usr/bin</filename></entry>
-            </row>
+	      <entry><filename
+		  class="directory">tools/</filename></entry>
+	      <entry>Tools used for maintenance and testing of
+		FreeBSD</entry>
+	    </row>
 
 	    <row>
-	    <entry><filename
- class="directory">usr.sbin/</filename></entry>
-            <entry>Source for files in <filename
- class="directory">/usr/sbin</filename></entry>
-            </row>
-          </tbody>
+	      <entry><filename
+		  class="directory">usr.bin/</filename></entry>
+	      <entry>Source for files in <filename
+		  class="directory">/usr/bin</filename></entry>
+	    </row>
+
+	    <row>
+	      <entry><filename
+		  class="directory">usr.sbin/</filename></entry>
+	      <entry>Source for files in <filename
+		  class="directory">/usr/sbin</filename></entry>
+	    </row>
+	  </tbody>
 	</tgroup>
-      </informaltable>
-    </para>
+      </informaltable></para>
   </sect1>
 </chapter>