[exim] system_filter - is it possible to include file into …

Hi

I would like to setup system_filter for exim. Is it possible to include any
file into system_filter ?

For example I would have: system_filter = /etc/exim_system_filter in
exim.conf

and is it possible to add something like:

"include = /etc/exim_system_filter_included_1"

into /etc/exim_system_filter to have exim_system_filter_included_1 included
to exim file for example at its bottom?

Mike