RE: XML WD14 comment

> Non-Normative appendix E states
>
>    "FOR COMPATIBILITY, it is required that content models in element
>     type declarations be deterministic.".
>
> Since this requirement is in a Non-Normative appendix, it is
> not at all clear whether XML per se requires deterministic
> content models or not.

There is a statement in 3.2.1 (just before the "Proper Group/PE Nesting" VC
after production [50]) that goes "For compatibility, it is an error if an
element in the document can match more than one occurrence of an element
type in the content model".  The requirement there is normative ("for
compatibility" only explains why it's there) and the non-normative appendix
explains what that means.

--
François Yergeau