+
+ <para>Internally, this service will echo a string like
+ <literal>mem</literal> into
+ <filename>/sys/power/state</filename>, to trigger the
+ actual system suspend. What exactly is written
+ where can be configured in the <literal>[Sleep]</literal>
+ section of <filename>/etc/systemd/sleep.conf</filename>.
+ See <citerefentry><refentrytitle>systemd-sleep.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
+ </para>
+ </refsect1>
+
+ <refsect1>
+ <title>Options</title>
+
+ <para><command>systemd-sleep</command> understands the
+ following commands:</para>
+
+ <variablelist>
+ <xi:include href="standard-options.xml" xpointer="help" />
+ <xi:include href="standard-options.xml" xpointer="version" />
+
+ <varlistentry>
+ <term><option>suspend</option></term>
+ <term><option>hibernate</option></term>
+ <term><option>hybrid-sleep</option></term>
+
+ <listitem><para>Suspend, hibernate, or
+ put the system to hybrid sleep.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>