All, To keep things lively I invite you to peruse the following regarding type substitution. I believe that we should avoid using type substitution in the Message Header. I look forward to any and all comments and suggestions. http://www.xml.com/pub/a/2003/10/29/derivation.html http://www.xfront.com/ExtensibleContentModels.html http://serv4.itsware.net/bb/viewtopic.php?t=671&; http://pluralsight.com/blogs/tewald/archive/2004/08/20/1982.aspx Ira Fuchs XML Associates Inc. Phone: 718-268-0592 email: <mailto:ifuchs@xxxxxxxxxxxxxxxxx> ifuchs@xxxxxxxxxxxxxxxxx
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