An *(acronym) for Extended _(BNF), a notation for context-free grammars.

See _(Parsing).

<ul class="links">
  <li>_("Notations for context-free grammars"|http://www.cs.man.ac.uk/~pjj/bnf/bnf.html).</li>
  <li>_("A Summary of the ISO EBNF Notation"|http://www.cl.cam.ac.uk/~mgk25/iso-ebnf.html).</li>
</ul>
