<para>More actions and arguments can be added any time. Using snapper in
the plugins is not allowed.</para>
<para>Ensure plugins execute within a few seconds. Slow-running plugins
- block the primary interface and degrade user experience.</para>
+ block the primary interface and degrade user experience and can even
+ cause timeouts (e.g. causing zypper to kill the snapper plugin).</para>
<para>It is undefined whether the plugins are called from the
client (snapper) or server (snapperd).</para>
</refsect1>