%ent-mmlextra;
MathML Extra Entities Module
External module called by the Mathematical Markup Language (MathML) Use MathML
documentation (https://www.w3.org/TR/MathML3/ or https://www.w3.org/TR/MathML2/).
Journal Archiving and Interchange Tag Library NISO JATS Version 1.2 (ANSI/NISO Z39.96-2019)
Version of May 2019