Full description
Major mode for editing programming language descriptions in the
style used by the Algol 68 Revised Report. The syntax of the language
is expressed formally using a van-Wijngaarden grammar, also known as
VW-grammars or two-level grammars. These grammars have the same
expression power than a Turing machine, and can therefore cover much
more than the usual BNF-style representations which are restricted to
what can be expressed by context-free grammars. Pragmatic annotations
and cross-references complement the grammar rules, which are organized
in numbered sections.
Packages