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Clarifies a very confusing #4 in "Permitted Content". May need to be broken into four parts if this ends up not being clear enough.


Just adds the deprecated symbol to an attribute that was already noted as deprecated.


'the' made it less clear in this particular definition that th's can interact with other th's


Adds detail to integrity attribute

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It can be helpful for deprecated and obsolete tags to be marked as such where they are mentioned.