%math.ent; Math Elements Module

External module in the base Suite that defines elements in the various math classes, such as display equations.
Declaration
<!ENTITY % math.ent  PUBLIC
"-//NLM//DTD JATS (Z39.96) JATS DTD Suite Math Class Elements v1.3 20210610//EN"
"JATS-math1-3.ent"                                                 >