[porpoise]

Very cool.

In a similar vein (but much less techinically sophistcated), I recently realized that making "cloze" cards (esp. ones w/ a large number of deletions and/or incremental-reveal cards) in Anki can be made a much less painful process by ditching the native method in favor of an almost entirely CSS implementation (basically, you use Anki's editor to underline the cloze deletions, use a line of JS to add innerText as an attribute to the element, and use CSS to make each answer appear in a little pop-up as you hover over (or touch, if on mobile) a blank. An example: https://streamable.com/xwewa4).