Returns a $files collection with all archive files (zip, gzip, tar) in the page's directory
<h2>Downloads</h2>
<ul>
<?php foreach($page->archives() as $archive): ?>
<li>
<a href="<?php echo $archive->url() ?>">
<?php echo $archive->filename() ?>
(<?php echo $archive->niceSize() ?>)
</a>
</li>
<?php endforeach ?>
</ul>