>>>>> "David" == David Carlisle <davidc@xxxxxxxxx> writes:

    David> xml. (They are always free to make warnings, warnings and
    David> other messages are not constrained in any way). The whole
    David> notion of "reserving" these things would be broken if
    David> parsers rejected them.

No it wouldn't - provided they let through the names that have
actually been allocated for use by particular recommendations.
-- 
Colin Paul Adams
Preston Lancashire