This technology known from InDesign and other layout programs was once in the works by Microsoft for the web. The idea was picked up by the Safari-Team at Apple, but it was ultimately dropped (at least at this time in history). I still think it is a really great idea and specially for Hype with its fixed size fields it could work. I put together a basic demo that reflows the text based on scaling the browser window. The technology reflows even HTML after breaking it apart. Hope this tech gets picked up in the future again.
Some years ago (source on the forum) I did a similar thing, but only with regular text. The following example on the other hand supports everything the Polyfill wanted to show off at the time …
CSS-Regions-Polyfill.hype.zip (13,7 KB)
Demo (resize browser window):