http://tcllib.sourceforge.net/doc/asn.html
----
"Abstract Syntax Notation" in ITU-T X.680
[http://www.itu.int/ITU-T/studygroups/com17/languages/X.680-0207.pdf];
also note related language specifications
[http://www.itu.int/ITU-T/studygroups/com17/languages/].
These are all reference materials, largely opaque to humans; we need
to mention here also such tutorials as Milan and Dubuisson's
[http://asn1.elibel.tm.fr/en/tools/tutorial/].
[[...]]