<term><option>-a</option></term>
<term><option>--action=<replaceable>ACTION</replaceable></option></term>
<listitem>
- <para>The action string. The special value <literal>help</literal> may be used to list
- known values.</para>
+ <para>Type of event to be simulated. Possible actions are <literal>add</literal>,
+ <literal>remove</literal>, <literal>change</literal>, <literal>move</literal>,
+ <literal>online</literal>, <literal>offline</literal>, <literal>bind</literal>,
+ and <literal>unbind</literal>. Also, the special value <literal>help</literal> can be used
+ to list the possible actions. The default value is <literal>add</literal>.</para>
</listitem>
</varlistentry>
<varlistentry>