n
expects at least the fields <tt>host</tt>, <tt>sink</tt>, and one of 
<tt>argument</tt> or <tt>path</tt> (<tt>argument</tt> takes
precedence). <tt>Host</tt> is the server to connect to. <tt>Sink</tt> is
the <em>simple</em> 
<a href="http://lua-users.org/wiki/FiltersSourcesAndSinks">LTN12</a>
sink that will receive the downloaded data. <tt>Argument</tt> or
<tt>path</tt> give the target path to the resource in the server. The
optional arguments are the following:
</p>
<ul>
<li><tt>user</tt>, <tt>password</t