- specified systemd unit. This will add
- a match for messages from the unit
- (<literal>_SYSTEMD_UNIT=</literal>)
- and additional matches for messages
- from systemd and messages about
- coredumps for the specified unit.</para>
- <para>This parameter can be specified multiple times.
- </para></listitem>
+ specified systemd unit
+ <replaceable>UNIT</replaceable> (such
+ as a service unit), or for any of the
+ units matched by
+ <replaceable>PATTERN</replaceable>.
+ If a pattern is specified, a list of
+ unit names found in the journal is
+ compared with the specified pattern
+ and all that match are used. For each
+ unit name, a match is added for
+ messages from 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>
+
+ <para>This parameter can be specified
+ multiple times.</para></listitem>