<para>All users are granted access to their private per-user
journals. However, by default, only root and users who are
- members of the <literal>systemd-journal</literal> group get
- access to the system journal and the journals of other
- users.</para>
+ members of a few special groups are granted access to the system
+ journal and the journals of other users. Members of the the
+ <literal>systemd-journal</literal>, <literal>adm</literal>, and
+ <literal>wheel</literal> groups can read all journal files. Note
+ that the two latter groups traditionally have additional
+ privileges specified by the distribution. Members of the
+ <literal>wheel</literal> group can often perform administrative
+ tasks.</para>
<para>The output is paged through <command>less</command> by
default, and long lines are "truncated" to screen width. The