Board Thread:Support Requests - Getting Technical/@comment-5030775-20190314212338/@comment-9605025-20190314215353

Unfortunately, there is no simple way to specify a custom image on the page itself. You could do it with the help of custom JS but that would be a little more involved.

If you add a custom class to the div, you can modify the site-wide CSS to target only collapsible divs with that custom class. This could also be used to provide a limited set of image choices but it would be impractical to create a separate class for each collapsible div on the wiki; so truly custom images is still not very practical (albeit possible, as previously mentioned).