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packedobjects is a data encoding tool based on the telecommunications standard Packed Encoding Rules (PER). An abstract syntax language is used to define a protocol specification. packedobjects uses the Scheme programming language to represent the protocol specification within a symbolic expression (s-expression).
For a more detailed introduction refer to the following short paper.
John P. T. Moore
(packedobjects <protocol> #!key <pdusize> <strsize>)