let's take one step back first and let me ask: does the construct allow for something like
<!-- some more content here -->
say i want something that visually appears like, oh i don't know, a horizontal strip of images which, when clicked, open individual modal-looking overlays. i'd want to style the overall container for those images, maybe place extra markup after them, etc.
would the proposal as it stands now support this, or are only
<panel> allowed as children of
as for the imperative API and triggering by proxy...i'm assuming you mean i could have any arbitrary element in my page, and use JS to then trigger the correct panel to appear? in which case my question would be: as i'd still then need to add all the usual
aria-expanded etc info myself to the triggering elements, what's the value in even using
<panelset>/<panel> and triggering that with JS?