+<!ENTITY file-aptconf "
+ <varlistentry><term><filename>/etc/apt/apt.conf</filename></term>
+ <listitem><para>APT configuration file.
+ Configuration Item: <literal>Dir::Etc::Main</literal>.</para></listitem>
+ </varlistentry>
+
+ <varlistentry><term><filename>/etc/apt/apt.conf.d/</filename></term>
+ <listitem><para>APT configuration file fragments.
+ Configuration Item: <literal>Dir::Etc::Parts</literal>.</para></listitem>
+ </varlistentry>
+">
+
+<!ENTITY file-cachearchives "
+ <varlistentry><term><filename>&cachedir;/archives/</filename></term>
+ <listitem><para>Storage area for retrieved package files.
+ Configuration Item: <literal>Dir::Cache::Archives</literal>.</para></listitem>
+ </varlistentry>
+
+ <varlistentry><term><filename>&cachedir;/archives/partial/</filename></term>
+ <listitem><para>Storage area for package files in transit.
+ Configuration Item: <literal>Dir::Cache::Archives</literal> (implicit partial). </para></listitem>
+ </varlistentry>
+">
+
+<!ENTITY file-preferences "
+ <varlistentry><term><filename>/etc/apt/preferences</filename></term>
+ <listitem><para>Version preferences file.
+ This is where you would specify "pinning",
+ i.e. a preference to get certain packages
+ from a separate source
+ or from a different version of a distribution.
+ Configuration Item: <literal>Dir::Etc::Preferences</literal>.</para></listitem>
+ </varlistentry>
+
+ <varlistentry><term><filename>/etc/apt/preferences.d/</filename></term>
+ <listitem><para>File fragments for the version preferences.
+ Configuration Item: <literal>Dir::Etc::PreferencesParts</literal>.</para></listitem>
+ </varlistentry>
+">
+
+<!ENTITY file-sourceslist "
+ <varlistentry><term><filename>/etc/apt/sources.list</filename></term>
+ <listitem><para>Locations to fetch packages from.
+ Configuration Item: <literal>Dir::Etc::SourceList</literal>.</para></listitem>
+ </varlistentry>
+
+ <varlistentry><term><filename>/etc/apt/sources.list.d/</filename></term>
+ <listitem><para>File fragments for locations to fetch packages from.
+ Configuration Item: <literal>Dir::Etc::SourceParts</literal>.</para></listitem>
+ </varlistentry>
+">
+
+<!ENTITY file-statelists "
+ <varlistentry><term><filename>&statedir;/lists/</filename></term>
+ <listitem><para>Storage area for state information for each package resource specified in
+ &sources-list;
+ Configuration Item: <literal>Dir::State::Lists</literal>.</para></listitem>
+ </varlistentry>
+
+ <varlistentry><term><filename>&statedir;/lists/partial/</filename></term>
+ <listitem><para>Storage area for state information in transit.
+ Configuration Item: <literal>Dir::State::Lists</literal> (implicit partial).</para></listitem>
+ </varlistentry>
+">