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+Serd is a lightweight and dependency-free C library for RDF serialisation which
+supports [Turtle], [NTriples], [NQuads], and [TriG].
+
+The complete API is documented in the [serd](@ref serd) group.  It revolves
+around two main types: @ref SerdReader, which reads text and fires callbacks,
+and @ref SerdWriter, which writes text when driven by corresponding functions.
+Both work in a streaming fashion but still support pretty-printing, so the pair
+can be used to pretty-print, translate, or otherwise process arbitrarily large
+documents very quickly.  The stream context is maintained by @ref SerdEnv,
+which stores the current base URI and set of namespace prefixes.
+
+[Turtle]: http://www.w3.org/TR/turtle/
+[NTriples]: http://www.w3.org/TR/n-triples/
+[NQuads]: http://www.w3.org/TR/n-quads/
+[TriG]: http://www.w3.org/TR/trig/