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Book1 doesn't look like an extension, but a new
type containing an element of type Book.

Maybe I've misunderstood?

Regards
Michael


> -----Original Message-----
> From: Murali Mani [mailto:mani@C...]
> Sent: Sunday, 19 May 2002 2:11 AM
> To: xml-dev@l...
> Subject:  Question regarding extension..
> 
> 
> 
> Is this extension valid??
> 
> type Book -> (Title, Author*)
> type Book1 extends Book -> (Book, Title)
> 
> thanks and regards - murali.
> 
> 
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