It’s a reference to a diagram/figure in the patent | Hacker News

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		bfaviero on June 24, 2018 \| parent \| context \| favorite \| on: Facebook’s patents show a commitment to collecting... It’s a reference to a diagram/figure in the patent

userbinator on June 25, 2018 [–]

Unfortunate that they didn't have enough numbered things to use 641A...

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