- and versions being changed. Version 2 is enabled by setting
- <literal>DPkg::Tools::options::cmd::Version</literal> to 2. <literal>cmd</literal> is a
- command given to <literal>Pre-Install-Pkgs</literal>.</para></listitem>
+ and versions being changed. Version 3 adds the architecture and <literal>MultiArch</literal>
+ flag to each version being dumped.</para>
+
+ <para>The version of the protocol to be used for the command
+ <literal><replaceable>cmd</replaceable></literal> can be chosen by setting
+ <literal>DPkg::Tools::options::<replaceable>cmd</replaceable>::Version</literal>
+ accordingly, the default being version 1. If APT isn't supporting the requested
+ version it will send the information in the highest version it has support for instead.
+ </para></listitem>