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Re: Define a root in a DTD

• From: John Cowan <jcowan@r...>
• To: peter@s...
• Date: Tue, 26 Jun 2001 13:04:46 -0400

Peter Flynn wrote:

> The root element is always the one that
> does not appear in the content model of any other element 
> type. All other elements must get mentioned somewhere else,
> but the root element never does.


This may be true in practice, but it is easy to create DTDs where
it is false, e.g.:

<!ELEMENT group (buy|sell|group)+>
<!ELEMENT buy EMPTY>
<!ELEMENT sell EMPTY>

where "group" is meant to be the root.

-- 
There is / one art             || John Cowan <jcowan@r...>
no more / no less              || http://www.reutershealth.com
to do / all things             || http://www.ccil.org/~cowan
with art- / lessness           \\ -- Piet Hein

• References:
  • Re: Define a root in a DTD
    • From: Peter Flynn <peter@s...>

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