It was a neat presentation, but as I pointed out in the Q&A at the end, he's essentially recreated the Wired Magazine app since the pages are ``merely'' rendered as images (one each per portrait / landscape).
The Knuth & Plass H&J algorithm is in the public domain, the problem is it demands quite a bit more processing power than the brain-dead 1-line at a time, greedy algorithms currently in use. Given that I used to use TeX on a 25MHz 68040 NeXT Cube though, it really should be feasible.
William
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