External module in the Archiving and Interchange DTD Suite that declares the elements of the %sec.class;, i.e., all of the section-level elements in the Journal Archiving and Interchange DTD (Green)
<!ENTITY % section.ent
PUBLIC
"-//NLM//DTD Archiving and Interchange DTD Suite Section Class Elements v2.0 20040830//EN"
"section.ent" >modules.ent