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<section id="install_update">
<title>Install/Update</title>
<para>
The following preferences can be changed on the Install/Update
page:
</para>
<para>
<informaltable>
<tgroup cols="3">
<colspec colname="Option" colwidth="1* " />
<colspec colname="Description" colwidth="2*" />
<colspec colname="Default" colwidth="1*" />
<thead>
<row>
<entry>Option</entry>
<entry>Description</entry>
<entry>Default</entry>
</row>
</thead>
<tbody>
<row>
<entry>
Maximum number of 'History' configurations
</entry>
<entry>
Maximum number of configurations you want
maintained in the configuration history.
These configurations are maintained to allow
you to revert to a previous configuration of
installed feature versions.
</entry>
<entry>100</entry>
</row>
<row>
<entry>
Check digital signatures of downloaded
archives
</entry>
<entry>
This option will check for digital
signatures of downloaded archives.
</entry>
<entry>On</entry>
</row>
<row>
<entry>Valid updates</entry>
<entry>
Assuming that feature versions use the form
'major.minor.service', you can select what
update level you want to choose from:
<itemizedlist>
<listitem>
equivalent : Only service updates
will be displayed.
</listitem>
<listitem>
compatible : Service updates and
minor updates will be displayed.
</listitem>
</itemizedlist>
</entry>
<entry>equivalent</entry>
</row>
<row>
<entry>Update Policy</entry>
<entry>
The update policy URL that controls the
redirection of update sites within an
organization.
</entry>
<entry>No policy</entry>
</row>
<row>
<entry>Proxy settings</entry>
<entry>
Allows connection to the remote server from
behind the firewall. When enabled, proxy
host address (required) and port number
(optional) can be specified.
</entry>
<entry>No proxy</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</para>
<para>
Here is what the Install/Update preferences page looks like:
</para>
<para>
<screenshot>
<mediaobject>
<imageobject>
<imagedata scale="50"
fileref="images/install-update_screen.png" format="PNG" />
</imageobject>
</mediaobject>
</screenshot>
</para>
&automatic_updates;
</section>