DOCBOOK: About <nonterminal> parent list

[Jeffrey Franks <jfranks@quik.com>]

I'm starting to use EBNF module.

According to on-line DocBook (alpha version),

<nonterminal> parent listing is confusing based on
it's intended use. How can it's parent list be so large when
almost all of these have nothing to do with EBNF?

Is this a mistake in the book, or spec, or am I missing something?

-- 
Jeffrey L. Franks  (Web)  http://www.motiftools.org
                   (Mail) jfranks@quik.com