Main textual portion of the book that conveys the narrative content.
The <book-body> of a book cannot repeat, but it takes a @specific-use attribute. This attribute could be used to indicate a very unusual book body (<book-body>), not the typical tagged narrative content. For example, a <book-body> might take a @specific-use attribute to indicate that the <book-body> is an untagged “bag of words” for indexing purposes, the <book-body> contains just undifferentiated OCR content, or the <book-body> is (artificially) tagged as a single paragraph which is acting as a text dump.
<!ELEMENT book-body %book-body-model; >
((book-part | xi:include)+)
<book dtd-version="1.0">
<book-meta>...</book-meta>
<front-matter>...</front-matter>
<book-body>
<book-part id="bid.1" book-part-type="part">
<book-part-meta>
<title-group>
<label>Part 1</label>
<title>The Databases</title>
</title-group>
</book-part-meta>
<body>
<sec id="bid.3">
<title>History</title>
<p>Initially, GenBank was built and maintained at Los Alamos National
Laboratory. In the early 1990s, this responsibility was awarded to NCBI
through congressional mandate. ...</p>
...
</sec>
...
</body>
<back>
<ref-list>...</ref-list>
</back>
</book-part>
<book-part>...</book-part>
<book-part>...</book-part>
</book-body>
<book-back>...</book-back>
</book>