Board Thread:Support Requests - Getting Technical/@comment-35289850-20200815141454/@comment-9605025-20200816021530

I believe they are probably talking about Labeled Section Transclusion. It is not listed on Help:Extensions but it is present here on CC (see Special:Version) and apparently it is requestable. It is not entirely free-form as it requires you to add section tags to mark the different sections of the page. I personally think that tag name was a bad choice since users might get it confused with the HTML section tag; which MediaWiki doesn't recognize.

Whether using Labeled Section Tranclusion or the built-in tranclusion tags, you would need to edit each of those ~2000 pages. So yeah, if you are going to do it that way, you are going to want to use a bot. I would just like to point out that while the switch statement requires you to compile the list, you then have a central location with all of the information as opposed to having it spread across multiple pages.

If you are providing the image as a parameter to a template on the item's page, then there is yet another option we haven't even mentioned yet. You could have DPL enabled and use that instead. DPL can return the value assigned to particular template parameters used on a page. This solution would require neither a compiled list not mass page editing. However, it is more demanding on the servers.