RE: Must You Specify mixed="true" on extended types?

 
> But I wanted to make sure, because I would have expected the 
> value for 
> "mixed" to be inherited from the base type for extensions, 
> regardless of 
> what the nominal default value of the "mixed=" attribute is.

I don't think there's anything in the spec that causes the default to be
inherited from the base type. It has to be specified explicitly and it has
to be consistent. That's the XML schema style - like listing all the child
elements again when you define a type by restriction.

Michael Kay