<varlistentry>
<term><option>--boot</option></term>
- <listitem><para>Also execute lines with an exclamation mark.
- </para></listitem>
+ <listitem><para>Also execute lines with an exclamation mark. Lines that are not safe to be executed
+ on a running system may be marked in this way. <command>systemd-tmpfiles</command> is executed in
+ early boot with <option>--boot</option> specified and will execute those lines. When invoked again
+ later, it should be called without <option>--boot</option>.</para></listitem>
</varlistentry>
<varlistentry>
<title>Credentials</title>
<para><command>systemd-tmpfiles</command> supports the service credentials logic as implemented by
- <varname>LoadCredential=</varname>/<varname>SetCredential=</varname> (see
- <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>1</manvolnum></citerefentry> for
+ <varname>ImportCredential=</varname>/<varname>LoadCredential=</varname>/<varname>SetCredential=</varname>
+ (see <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>1</manvolnum></citerefentry> for
details). The following credentials are used when passed in:</para>
<variablelist>