An article subtitle (<subtitle>) that has been translated into a language other than that of the original article subtitle
Within bibliographic references (<mixed-citation>), a translated subtitle should be tagged as part of the translated title.
Within the article metadata, a grouping element (<trans-title-group>) has been added to keep related <trans-title>s and <trans-subtitle>s together. Best practice is now to place the language attribute (@xml:lang) on the group <trans-title-group>. In bibliographic references — which do not allow <trans-title-group> — the @xml:lang attribute must be included on the <trans-title> element.
(#PCDATA | ext-link | break | related-article | inline-supplementary-material | bold | italic | monospace | overline | roman | sans-serif | sc | strike | underline | alternatives | inline-graphic | mml:math | fn | target | xref | sub | sup)*
Any combination of:
common3.ent