$query->append(-name=>'foo',-values=>['yet','more','values']);

##</code><code>##

$query->append(-name=>'foo',-values=>['yet','more','values'],
               -description=>'foos description');

##</code><code>##

my @fooList = $cgi->param('foo');

##</code><code>##

$cgi->param('foo')->('description');