Chunked @file{FILE} produces @file{FILE.nncp.meta},
@file{FILE.nncp.chunk0}, @file{FILE.nncp.chunk1}, ... files. All
@file{.nncp.chunkXXX} can be concatenated together to produce original
-@file{FILE}. @file{.nncp.meta} contains information about file/chunk
-size and their hash checksums:
+@file{FILE}.
+
+@file{.nncp.meta} contains information about file/chunk
+size and their hash checksums. It is
+@url{https://tools.ietf.org/html/rfc4506, XDR}-encoded structure:
@verbatim
+------------------------------+---------------------+
@unnumbered Packet format
All packets are
-@url{https://en.wikipedia.org/wiki/External_Data_Representation,
-XDR}-encoded structures.
+@url{https://tools.ietf.org/html/rfc4506, XDR}-encoded structures.
@menu
* Plain packet: Plain.
SP works on top of
@url{http://noiseprotocol.org/noise.html#interactive-patterns,
@code{Noise_IK_25519_ChaChaPoly_BLAKE2b}} protocol. Each Noise packet
-are sent inside XDR envelope:
+are sent inside @url{https://tools.ietf.org/html/rfc4506, XDR} envelope:
@verbatim
+-----------------+