<para>When showing unit/job/manager properties, limit
display to certain properties as specified as argument. If
not specified all set properties are shown. The argument
- should be a property name, such as
+ should be a comma-seperated list of property names, such as
<literal>MainPID</literal>. If specified more than once all
- properties with the specified names are
- shown.</para>
+ properties with the specified names are shown.</para>
</listitem>
</varlistentry>