<varlistentry>
<term><command>list-units</command></term>
- <listitem><para>List known units.</para></listitem>
+ <listitem><para>List known units (subject to limitations
+ specified with <option>-t</option>).</para>
+
+ <para>This is the default command.</para></listitem>
</varlistentry>
<varlistentry>
<term><command>start [NAME...]</command></term>
<listitem><para>Show terse runtime
status information about one or more
- units, followed by its most recent log
- data from the journal. This function
- is intended to generate human-readable
- output. If you are looking for
- computer-parsable output, use
- <command>show</command> instead. If a
- PID is passed information about the
- unit the process of the PID belongs to
- is shown.</para></listitem>
+ units, followed by most recent log
+ data from the journal. If no units are
+ specified, show all units (subject to
+ limitations specified with
+ <option>-t</option>). If a PID is
+ passed show information about the unit
+ the process belongs to.</para>
+
+ <para>This function is intended to
+ generate human-readable output. If you
+ are looking for computer-parsable
+ output, use <command>show</command>
+ instead.</para></listitem>
</varlistentry>
<varlistentry>
<term><command>show [NAME...|JOB...]</command></term>