XSchema: root element

[Ron Bourret]

Simon St. Laurent wrote:

> Ron Bourret wrote:
> >I now believe we should bring RootElement back as an optional attribute 
> >(NMTOKEN, #IMPLIED).  The primary reason is for authoring, although it would 
> >also be useful in DTD exploration.
> 
> I think you're right, but where do you want the attribute?  In the XSC:XSchema 
> element, or in the element declarations themselves?  The XSC:XSchema solution 
> would only allow you to define one root element (you could go to NMTOKENS, of 
> course), while the element solution is messier but allows multiple possible 
> root elements for authoring.

I think it's actually cleaner on the element declarations than on the XSchema 
element -- we don't have to have language in the spec about ignoring the 
attribute.  All we say is that any element that can be the root of a meaningful 
document should set the attribute to True.  You might also want to explain the 
conditions in which you might have zero, one, or many root elements.

The DTD syntax is:

<!ATTLIST ElementDecl ... Root (True | False) "False">

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