Make <tbx:entailedTerm> a
member of %simple-link.class;, so that
it is allowed to appear within <p>,
since it is sometimes needed in lists and tables
occurring within a
<tbx:termEntry>.
(Note: because the class is used in other places as
well, <tbx:entailedTerm> will be
syntactically legal in many places; it is semantically
appropriate, however, only within term entries.)
Allow the @style-type
attribute to appear on <p>
elements to allow manual specification of styling.
Define <sub-part>
to handle cases of numbered sub-parts appearing
within a part of a standard.