gallery_set_description_element_code = set_description
Thanks @pinkfishies, you helped untangle me.
One additional question.
If I wanted to change the 'representation_tag' in the gallery sidebar:
$va_first_items_from_set = $this->getVar("first_items_from_sets");
...
$va_first_item = array_shift($va_first_items_from_set[$vn_set_id]);
...
<?php print $va_first_item["representation_tag"];?>
to something other than icon
to say medium
where would I do that?
Couldn't find much on my own by working backwards from the gallery view.