[TW5] external url with list-thumbnail

[Nicholas Zufelt]

I'm trying to use the style of the HelloThere tiddler's list-thumbnails to create a list of thumbnails to various websites.  However, in the above example, clicking these thumbnails links to other tiddlers, not external links.  This is done by adding a `link` field to the image tiddlers, but this field doesn't seem to be accepting external links.  Is there a way to change the functionality of clicking the thumbnail to go to an external link (in a new tab)?  I see that there is a `url` field as well, is that the way to do it?

For reference, here is the code for the HelloThere tiddler's list:

<div style="font-size:0.7em;text-align:center;margin-top:2em;margin-bottom:2em;">
<<list-thumbnails filter:"[tag[HelloThumbnail]]" width:"168" height:"95">>
</div>

Can I maybe add some attribute in the list code that tells it what action to take when I click it?