gnu-emacs@gentoo.org Gentoo GNU Emacs project 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. ~jemarch/vw-mode