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On Wed, 23 Jun 2004 11:17:51 -0400, "Houghton,Andrew" <[log in to unmask]> said: > Over a year ago, I pointed out that MODS, and now MADS, should not > use hard coded values in the XML schema, but instead should use > URI's to define these types of values. By using URI's you make > the schema more flexible. Don't know much about the uri issue, but flexibility is why I was also arguing against the heavy reliance on attributes in mads (and indeed mods). For example, if you have <variant> you can always later add whatever specific child elements (or offer finer control of the element) than if you just have this coded only in the "otherVariant" attribute. Bruce