The module provides a simple way to write good-looking BNF-style grammars in ConTeXt. Grammars are written using the BNF syntax right in your ConTeXt documents, so there is a clear separation between content and layout. This allows the user to decide exactly how the grammar is to be displayed, while also allowing the gist of the grammar to be understood from simply looking at the source ConTeXt document.

The author is Nikolai Weibull.