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-<?xml version="1.0" encoding="ISO-8859-1"?>
-<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
-  "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
-  <!ENTITY % general-entities SYSTEM "../general.ent">
-  %general-entities;
-]>
-
-<sect1 id="ch-preps-aboutlfs">
-  <?dbhtml filename="aboutlfs.html"?>
-
-  <title>About $LFS</title>
-
-  <para>Throughout this book, the environment variable <envar>LFS</envar> will
-  be used. It is paramount that this variable is always defined.
-  It should be set to the mount point chosen for the LFS partition.
-  Check that the <envar>LFS</envar> variable is set up properly with:</para>
-
-<screen role="nodump"><userinput>echo $LFS</userinput></screen>
-
-  <para>Make sure the output shows the path to the LFS partition's mount
-  point, which is <filename class="directory">/mnt/lfs</filename> if the
-  provided example was followed. If the output is incorrect, the
-  variable can be set with:</para>
-
-<screen role="nodump"><userinput>export LFS=/mnt/lfs</userinput></screen>
-
-  <para>Having this variable set is beneficial in that commands such as
-  <command>mkdir $LFS/tools</command> can be typed literally. The shell
-  will automatically replace <quote>$LFS</quote> with
-  <quote>/mnt/lfs</quote> (or whatever the variable was set to) when it
-  processes the command line.</para>
-
-  <para>Do not forget to check that <envar>$LFS</envar> is set whenever
-  you leave and reenter the current working environment (as when doing a
-  <command>su</command> to <systemitem class="username">root</systemitem>
-  or another user).</para>
-
-</sect1>
-