No. You must write it like this:
<!ELEMENT D (#PCDATA | B | C)*>
See section 3.2.2 of the spec, production 51.
-- "These are, as I began, cumbersome ways / to kill a man. Simpler, direct, and much more neat / is to see that he is living somewhere in the middle / of the twentieth century, and leave him there." -- Edwin Brockhttp://www.stud.ifi.uio.no/~larsga/ http://birk105.studby.uio.no/