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Jim: A DTD content model is written like a mathematical equation. If you have: <!ELEMENT Item (ItemA, ItemB, ItemC*)> This means that you are required to have 1 ItemA, 1 ItemB and 0 or more ItemC's. If the content model is: <!ELEMENT Item (ItemA, (ItemB, ItemC)*> It means that you have to have one ItemA and 0 or more combinations of ItemB and ItemC. Hope this helps. Betty /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/ Betty Harvey | Phone: 410-787-9200 FAX: 9830 Electronic Commerce Connection, Inc. | harvey@e... | Washington,DC SGML/XML Users Grp URL: http://www.eccnet.com | http://www.eccnet.com/xmlug/ /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\\/\/ On Wed, 11 Jul 2001, Boyse, Jim wrote: > Can someone help with a DTD notation question, please? > > I'm looking at a DTD furnished by an outside source. In the DTD, most "optional repeating" elements are defined with an asterisk, for example, <!ELEMENT Test1 (ItemA, ItemB?, ItemC*)>. But a few are defined with additional parentheses, for example, <!ELEMENT Test2 (ItemA, ItemB?, (ItemC)*)>. > > What's the difference between "ItemC*" and "(ItemC)*"? > > Thanks for any insight into this (subtlety | confusion) you can give. > > --Jim > James A. Boyse > Foremost Insurance Group E-Mail: boyse@f... > P.O. Box 2450 Phone: 616/956-4150 > Grand Rapids, MI 49501-2450 Fax: 616/956-4450 > > --
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