[sc34wg3] XTM 2.0 topicRef - proposal for an erratum

[Lars Heuer]

Hi Steve,

[...]
> | There are three changes proposed. Two of them are simple relaxations
> | of constraints, and whereas the last requires adding two new elements.
>
> But all three are backward compatible, right?

You can parse XTM 2.0 topic maps with an XTM 2.1 parser but you cannot
read XTM 2.1 topic maps with a 2.0 parser.

Best regards,
Lars

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