<listitem>
<para>
Rather than performing the action, just print
- the container name.
+ the container name and wait delays until starting the next container.
</para>
</listitem>
</varlistentry>
Comma separated list of groups to select
(defaults to those without a lxc.group - the NULL group).
This option may be specified multiple times
- and the arguments concatentated. The NULL or
+ and the arguments concatenated. The NULL or
empty group may be specified as a leading comma,
trailing comma, embedded double comma, or empty
argument where the NULL group should be processed.