External module in the Journal Publishing DTD (Blue) that declares Parameter Entities of element class definitions to over-ride element classes in the base DTD Suite
<!ENTITY % journalpubcustom-classes.ent PUBLIC "-//NLM//DTD Journal Publishing DTD Customize Classes Module v2.0 20040830//EN" "journalpubcustom-classes.ent" >
journalpubcustom-modules.ent