The idea is that if there was a way of linking HTML to external sources. For example, as part of every listing we have T&C's, shipping info, and that sort of thing.
Currently if we change shipping company or part of our T&C's, we have to change every configurator, and update every listing to change the shipping info/T&C's within a listing. When there's a lot of items, it takes time, especially for items that need eBay's "item specifics" adding back in.
If there was a way of having text stored externally (for example on our own servers), and that text imported into the configurator, it means that every time a change needed to be made, we would only have to change the text in one place (on our server) and it would automatically change everything in every configurator, thus saving hours and hours of time.