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>You want to add a fourth level, not well-formed but OK. This happens all the time anyway. Parsers that don't read all external entities accept not-well-formed documents when the error occurs in an entity they don't read. >I think this is a very bad idea. Leave the existing spec >alone: no erratum, no change. XML 1.0 is defined by the XML 1.0 spec >as originally published. Make any changes in future versions if you >really must, but don't touch XML 1.0. There are two problems with that: - there will be documents that are both well-formed XML 1.0 documents and well-formed XML 1.1 documents, and they will have different infosets depending on which you consider them as (eg a document with a NEL in a tokenized attribute) - there will be documents labelled 1.1 which are well-formed XML 1.0 but not well-formed XML 1.1 (eg a document with unnormalized unicode). You say if "complexifies" the XML story, but it seems much simpler to me for a document labelled 1.0 to be only a well-formed 1.0 document and a document labelled 1.1 to be only a well-formed 1.1 document. -- Richard
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