The non-recursive body of a named book part such as a Dedication or Foreword.
<!ELEMENT named-book-part-body
(%named-book-part-body-model;) >((((address | alternatives | answer | answer-set | array | boxed-text | chem-struct-wrap | code | fig | fig-group | graphic | media | preformat | question | question-wrap | supplementary-material | table-wrap | table-wrap-group | disp-formula | disp-formula-group | def-list | list | tex-math | mml:math | p | related-article | related-object | ack | disp-quote | speech | statement | verse-group | x)+, (sec)*) | (sec)+))
Any one of:
<book dtd-version="1.0">
<book-meta>...</book-meta>
<front-matter>
<front-matter-part>
<book-part-meta>
<title-group>
<title>About this book</title>
</title-group>
</book-part-meta>
<named-book-part-body>
<sec sec-type="miscinfo">
<title>The NCBI Handbook</title>
<p>Bioinformatics consists of a computational approach
to biomedical information management and analysis. It is
being used increasingly as a component of research within
both academic and industrial settings and is becoming
integrated into both undergraduate and postgraduate
curricula. The new generation of biology graduates is
emerging with experience in using bioinformatics resources
and, in some cases, programming skills.</p>
...
</sec>
</named-book-part-body>
</front-matter-part>
</front-matter>
...
</book>