Whole document tree
Changes Planned for V4.0 to Date
We expect to make at least the following backwards-incompatible changes in V4.0; more such changes may be planned in the coming months:
Articles may be removed from Books and put into their own top-level DTD hierarchy.
Most elements currently containing the cptr.char.mix entity will have their content models restricted to #PCDATA and a much smaller set of elements.
Epigraph will be disallowed from appearing in BlockQuote.
The OptMult and ReqMult values for the Choice attribute on Group will be removed; it is expected that the Rep attribute value Repeat will be used instead.
The content model group in FuncSynopsis starting with FuncDef will not be repeatable; it is expected that the FuncPrototype element will be used for repeating prototype blocks instead.
Interface will no longer have a Class attribute; it is expected that one of the more specific elements with "GUI" as the root of their names, or the Interface element with a Role attribute value, will be used instead.