I had heard about this long ago, and had forgotten about it.<p>I found this page[0] that has some examples. Apparently, ATT has a youtube channel with way more interesting content than I would have knee jerk expected with some specific examples[1]<p>[0] <a href="https://content-animation.org.uk/animation_systems/beflix.htm" rel="nofollow">https://content-animation.org.uk/animation_systems/beflix.ht...</a><p>[1] <a href="https://www.youtube.com/watch?v=_Lmi6cmrq0w" rel="nofollow">https://www.youtube.com/watch?v=_Lmi6cmrq0w</a>