<para>If any of those commands (not prefixed with
<literal>-</literal>) fail, the rest are not executed and the
unit is considered failed.</para>
+
+ <para>Note that <varname>ExecStartPre=</varname> may not be
+ used to start long-running processes. All processes forked
+ off by processes invoked via <varname>ExecStartPre=</varname> will
+ be killed before the next service process is run.</para>
</listitem>
</varlistentry>