This appendix is informative.
This specification supercedes XHTML Modularization 1.0. This section describes at a high level the changes from that version. This section does not attempt to address the various editorial corrections that were made. For a detailed comparison, see the "diff marked" version from that recommendation.
PCDATA from the table of attribute types, since it is not an attribute type.xml:space to the Core attribute collection, so that it is available on all elements. Also removed any explicit references to xml:space from other
elements.xml:lang to take CDATA, not NMTOKEN.id attribute to every element.blockquote.legend so that it can be empty.table element in the Basic Tables Module.align attribute values on the img element in the Legacy Module.height attribute type on the th element in the Legacy Module.width attribute type on the td element in the Legacy Module.This is new content in this specification. It was developed independently and has already gone through the W3C processes including Last Call.
Updated references to make them current.