Authored by:: [[P- Brendan Langen]]

Hypothes.is allows users to annotate webpages or documents in their margins, providing the option to further enrich a snippet with context. Sharing is built in to Hypothes.is, affording added context and active reading across groups.

This enables social tagging, which helps users find related content and build community. [[Social tagging is a key user behavior to managing a decentralized knowledge graph]]. This can come in the form of text, likes or [[emoji reactions]].

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In an exciting development, the W3C Web Annotation recommends expanding upon their functionality by binding annotations to specific subregions of PDFs, which would enable [[interoperability]] beyond the tool alone.