Re:My Favorite Papers of 2017
by almata on Tuesday December 26, 2017 @01:56PM
(#16010212)
Not exactly what you're looking for, but maybe you or someone else might be interested on this:
http://fermatslibrary.com
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Very interesting, thanks!
Somewhat related,a general purpose annotation platform is http://hypothes.is - a great feature is that PDF annotations are location independent because they use some kind of fingerprint to identify the document.