7. 4. 7. XHTML

In MML Version 3.0 it is defined that blocklevel elements and text elements in XHTML can be used for some elements in the string data type. It is difficult to implement all blocklevel and text elements defined in XHTML and so it is decided that in the XHTML elements “br”, “font”, “i”, “b”, and “u” may be used in MML Version 3.0.

But it is recommended that XHTML should be strictly complied with in MML Version 3.0. Therefore, it is desirable to minimize the use of the “font” element and “u” element. Other blocklevel elements and text elements of XHTML can be added as required during implementation. In the DTDs of MML Version 3.0 only DTDs that admit the elements above are provided for reference.