In order
to provide complete and technically valid entity declarations in the
MathML 1.0 DTD, entities without current Unicode points have been
assigned values in the Unicode Private Zone. The text and
tables of values has been amended accordingly.
The entity lists in Section
6.2.4 have been updated to be more in line with the ISO character
sets, in that if some part of a set is included then the entire
set is included. Also, ISOCHEM has been dropped. These changes have
also been reflected in the entity declarations in the DTD in Appendix A.