e.g. <literal>APT::FTPArchive::Release::Origin</literal>. The supported fields
are: <literal>Origin</literal>, <literal>Label</literal>, <literal>Suite</literal>,
<literal>Version</literal>, <literal>Codename</literal>, <literal>Date</literal>,
- <literal>Architectures</literal>, <literal>Components</literal>, <literal>Description</literal>.</para></listitem>
+ <literal>Valid-Until</literal>, <literal>Architectures</literal>,
+ <literal>Components</literal>, <literal>Description</literal>.</para></listitem>
</varlistentry>
The <literal>Tree</literal> section takes a scope tag which sets the
<literal>$(DIST)</literal> variable and defines the root of the tree
(the path is prefixed by <literal>ArchiveDir</literal>).
- Typically this is a setting such as <filename>dists/woody</filename>.</para>
+ Typically this is a setting such as <filename>dists/&stable-codename;</filename>.</para>
<para>
All of the settings defined in the <literal>TreeDefault</literal> section can be
use in a <literal>Tree</literal> section as well as three new variables.</para>