<term><option>-s</option></term>
<term><option>--signal=</option></term>
- <listitem><para>When used with <command>kill-session</command>
- or <command>kill-user</command>, choose which signal to send
- to selected processes. Must be one of the well known signal
- specifiers, such as <constant>SIGTERM</constant>,
- <constant>SIGINT</constant> or <constant>SIGSTOP</constant>.
- If omitted, defaults to
- <constant>SIGTERM</constant>.</para></listitem>
+ <listitem><para>When used with <command>kill-session</command> or <command>kill-user</command>,
+ choose which signal to send to selected processes. Must be one of the well known signal specifiers,
+ such as <constant>SIGTERM</constant>, <constant>SIGINT</constant> or <constant>SIGSTOP</constant>.
+ If omitted, defaults to <constant>SIGTERM</constant>.</para>
+
+ <para>The special value <literal>help</literal> will list the known values and the program will exit
+ immediately, and the special value <literal>list</literal> will list known values along with the
+ numerical signal numbers and the program will exit immediately.</para></listitem>
</varlistentry>
<varlistentry>