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From: Peter Eisentraut <peter_e@gmx.net>
To: pgsql-docs@postgresql.org
Subject: Re: Why does SGML <indexterm> use zone=?
Date: Thu, 30 Aug 2007 22:33:58 +0200
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Cc: Bruce Momjian <bruce@momjian.us>
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Bruce Momjian wrote:
> What I am wondering is why we specify "zone" at all?

It means that the entire section is relevant to the index term.  
Otherwise it would mean that only the narrow area around the index term 
is relevant.  In printed renditions, that would be the difference 
between saying

foo, 87

and

foo, 86-90

in the index.
-- 
Peter Eisentraut
http://developer.postgresql.org/~petere/