... with external filters.
linkend="external-filter-syntax">syntax</link></literal>
may change in the future.
</para>
linkend="external-filter-syntax">syntax</link></literal>
may change in the future.
</para>
+ <para>
+ If you want to apply external filters to images or other content
+ that isn't text-based, enable the
+ <literal><link linkend="force-text-mode">force-text-mode</link></literal>
+ action as well.
+ </para>
</listitem>
</varlistentry>
</listitem>
</varlistentry>