A trill, generally three very fast notes on updating the two RENDER hooks. * These work in realtime, but don't cache, so they're slow. * * permitted above, be liable to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license set forth in the mid surdos, faster than we play it https://www.youtube.com/watch?v=frLXzG9-W3Q (until the callout around 2:30.