Sequential number of a conference.
Best Practice: Ideally, this element would contain only the numeric portion of the number without any suffixes or other text. For example, “The 19th XML/SGML Conference” should be tagged as <conf-num>19</conf-num> with the th dropped.
<!ELEMENT conf-num (#PCDATA %conf-num-elements;)* >
(#PCDATA | email | ext-link | uri | inline-supplementary-material | related-article | related-object | hr | bold | italic | monospace | overline | overline-start | overline-end | roman | sans-serif | sc | strike | underline | underline-start | underline-end | alternatives | inline-graphic | private-char | chem-struct | inline-formula | tex-math | mml:math | abbrev | index-term | index-term-range-end | milestone-end | milestone-start | named-content | styled-content | fn | target | xref | sub | sup | x)*
Any combination of:
JATS-articlemeta1.ent