Attribute: specific-use
Value: CDATA
May be in elements:
- <address>
 - <array>
 - <attrib>
 - <bio>
 - <boxed-text>
 - <caption>
 - <chem-struct>
 - <chem-struct-wrap>
 - <copyright-statement>
 - <def-list>
 - <disp-formula>
 - <disp-formula-group>
 - <disp-quote>
 - <email>
 - <ext-link>
 - <fig>
 - <fig-group>
 - <fn-group>
 - <glossary>
 - <graphic>
 - <list>
 - <media>
 - <milestone-end>
 - <milestone-start>
 - <named-content>
 - <p>
 - <preformat>
 - <ref>
 - <ref-list>
 - <related-article>
 - <sec>
 - <sig-block>
 - <speech>
 - <statement>
 - <styled-content>
 - <supplementary-material>
 - <table-wrap>
 - <table-wrap-group>
 - <verse-group>