I realize that bookmap hasn't been official until 1.1, but there have
been big changes in that model from the demo. Content valid against one
version will not against the other.
So far, the biggest issue I've seen is with title, but there may be
others. The different public identifiers would alleviate any concerns
over compatibility, because you know what version you are validating
To summarize: the reason you would like version-dependent public
identifiers is because you are nervous that DITA 1.1 will not be 100%
backwards compatible with DITA 1.0. Is that right? If it turned out to
be 100% backwards compatible then you would not mind installing DITA
1.1 for your translators to use with DITA 1.0 and 1.1 documents.
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