Index: introduction/important/unpacking.xml
===================================================================
--- introduction/important/unpacking.xml	(revision 7e4be43bff1280a36734c2b492f9939c9050e3fe)
+++ introduction/important/unpacking.xml	(revision 0c603671ad087d3d064069d74ed9ae2c2b48fb32)
@@ -1,5 +1,5 @@
 <sect1 id="intro-important-unpacking">
 <?dbhtml filename="unpacking.html" dir="introduction"?>
-<title>Getting and unpacking the software</title>
+<title>Notes on downloading, unpacking and compiling software</title>
 
 <para>Those people who have built a <acronym>LFS</acronym> system will be aware 
@@ -53,3 +53,39 @@
 </sect2>
 
+<sect2>
+<title>Verifying file integrity using md5sum</title>
+
+<para>Generally, to verify that the downloaded file is genuine and complete,
+most package maintainers also distribute md5sums of the files.
+To verify the md5sum of the downloaded files, download both the file and the
+corresponding md5sum file to the same directory (preferably from different
+on-line locations), and (assuming file.md5sum is the md5sum file downloaded)
+run the following command:</para>
+
+<screen><command>md5sum -c file.md5sum</command></screen>
+
+<para>If there are any errors, they will be reported.</para>
+
+</sect2>
+
+<sect2>
+<title>Creating Log files during installation</title>
+
+<para>For larger packages, it is convenient to create log files instead of
+staring at the screen hoping to catch a particular error or warning. Log files
+are also useful for debugging and keeping records. The following command
+allows you to create a installation log. Replace &lt;command&gt; with the
+command you intend to execute.</para>
+
+<screen><command>( &lt;command&gt; 2&gt;&amp;1 | tee compile.log &amp;&amp; exit $PIPESTATUS )</command></screen>
+
+<para><parameter>2&gt;&amp;1</parameter> redirects error messages
+to the same location as normal output. The <command>tee</command> command
+allows viewing of the output while logging the results to a file. The parentheses
+around the command run the entire command in a subshell and finally the
+<command>exit $PIPESTATUS</command> ensures the result of the &lt;command&gt;
+is returned as the result and not the result of the <command>tee</command> command.</para>
+
+</sect2>
+
 </sect1>
Index: x/installing/xfree86/xfree86-exp.xml
===================================================================
--- x/installing/xfree86/xfree86-exp.xml	(revision 7e4be43bff1280a36734c2b492f9939c9050e3fe)
+++ x/installing/xfree86/xfree86-exp.xml	(revision 0c603671ad087d3d064069d74ed9ae2c2b48fb32)
@@ -2,4 +2,5 @@
 <title>Command explanations</title>
 
+<!--
 <para><command>( WORLDOPTS="" make World 2&gt;&amp;1 | tee xfree-compile.log 
    &amp;&amp; exit $PIPESTATUS )</command>: 
@@ -12,4 +13,9 @@
 <command>exit $PIPESTATUS</command> ensures the result of the <command>make</command>
 is returned as the result and not the result of the <command>tee</command> command.</para>
+-->
+<para><command>WORLDOPTS="" make World</command>: 
+This command runs multiple makefiles to completely rebuild the system. 
+<envar>WORLDOPTS</envar>="" disables the default setting to continue after 
+encountering an error.</para>
 
 <note><para>When rebuilding <application>XFree86</application>, a separate command that may be used if only minor 
Index: x/installing/xfree86/xfree86-inst.xml
===================================================================
--- x/installing/xfree86/xfree86-inst.xml	(revision 7e4be43bff1280a36734c2b492f9939c9050e3fe)
+++ x/installing/xfree86/xfree86-inst.xml	(revision 0c603671ad087d3d064069d74ed9ae2c2b48fb32)
@@ -206,5 +206,5 @@
 
 
-<screen><userinput><command>( WORLDOPTS="" make World 2&gt;&amp;1 | tee xfree-compile.log &amp;&amp; exit $PIPESTATUS ) &amp;&amp;
+<screen><userinput><command>WORLDOPTS="" make World &amp;&amp;
 make install &amp;&amp;
 make install.man &amp;&amp;
Index: x/installing/xfree86/xfree86-intro.xml
===================================================================
--- x/installing/xfree86/xfree86-intro.xml	(revision 7e4be43bff1280a36734c2b492f9939c9050e3fe)
+++ x/installing/xfree86/xfree86-intro.xml	(revision 0c603671ad087d3d064069d74ed9ae2c2b48fb32)
@@ -72,4 +72,5 @@
 <acronym>LFS</acronym> system.</para>
 
+<!--
 <para>To check your downloads for integrity, download the <filename>SUMS.md5sum</filename>
 file.  Then:</para>
@@ -87,4 +88,5 @@
 <screen><userinput><command>md5sum 4.3.0-4.3.0.1.diff.gz</command></userinput>
 <userinput><command>md5sum fontfile.diff</command></userinput></screen>
+-->
 
 <para>After unpacking the <filename>X430src-?.tgz</filename> files and uncompressing the 
