You're making progress! Now take out <big> and <small>, <i>, <b>, and
<tt>, which are purely presentational, and use <em> and <strong>,
<code>, <samp>, <kbd>, and <var>, unless you're trying to re-invent
TeX (which is pretty much what HTML did).
For XSchema I would suggest, as another poster did, that some element
types specific to the subject at hand might be useful, such as
<elementtype>, <attributename>, and <attributevalue>. Don't force
IBTWML into XSchema; adapt it to the task at hand. That is, after
all, the point of XML.
-Chris
-- <!NOTATION SGML.Geek PUBLIC "-//Anonymous//NOTATION SGML Geek//EN"> <!ENTITY crism PUBLIC "-//O'Reilly//NONSGML Christopher R. Maden//EN" "<URL>http://www.oreilly.com/people/staff/crism/ <TEL>+1.617.499.7487 <USMAIL>90 Sherman Street, Cambridge, MA 02140 USA" NDATA SGML.Geek>