the unit
(<literal>_SYSTEMD_UNIT=<replaceable>UNIT</replaceable></literal>),
along with additional matches for messages from systemd and
- messages about coredumps for the specified unit.</para>
+ messages about coredumps for the specified unit. A match
+ is also added for <literal>_SYSTEMD_SLICE=<replaceable>UNIT</replaceable></literal>,
+ such that if the provided <replaceable>UNIT</replaceable> is a
+ <citerefentry><refentrytitle>systemd.slice</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ unit, all logs of the children of the slice will be logged.
+ </para>
<para>This parameter can be specified multiple times.</para>
</listitem>
(<literal>_SYSTEMD_USER_UNIT=</literal> and
<literal>_UID=</literal>) and additional matches for messages
from session systemd and messages about coredumps for the
- specified unit.</para>
+ specified unit. A match
+ is also added for <literal>_SYSTEMD_USER_SLICE=<replaceable>UNIT</replaceable></literal>,
+ such that if the provided <replaceable>UNIT</replaceable> is a
+ <citerefentry><refentrytitle>systemd.slice</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ unit, all logs of the children of the unit will be logged.</para>
<para>This parameter can be specified multiple times.</para>
</listitem>