A stylistically distinct word or phrase within the text, that cannot be tagged using any of the other mechanisms for such content. In other words: the content cannot be described with bold, italic, monospace or any of the other emphasis class elements and <named-content> is inappropriate because the semantic reason behind the typographic distinction is not clear. This is an NLM not an APA element.
(#PCDATA | ext-link | related-article | inline-supplementary-material | address | alternatives | array | graphic | preformat | disp-formula | bold | italic | monospace | overline | roman | sans-serif | sc | strike | underline | inline-graphic | chem-struct | inline-formula | def-list | list | mml:math | abbrev | milestone-end | milestone-start | named-content | styled-content | fn | target | xref | sub | sup | ack | disp-quote | speech | statement | verse-group)*
Any combination of:
<chem-struct>, <inline-formula>, <named-content>, <sig-block>, <styled-content>, <textual-form>
phrase3.ent