</tbody>
</tgroup>
</table>
+
+ <para>Please note that specifiers
+ <literal>%U</literal>, <literal>%h</literal>,
+ <literal>%s</literal> are mostly useless when systemd
+ is running in system mode. PID 1 cannot query the
+ user account database for information, so the
+ specifiers only work as shortcuts for things which are
+ already specified in a different way in the unit
+ file. They are fully functional when systemd is
+ running in <option>--user</option> mode.</para>
</refsect1>
<refsect1>