External module in the base Suite that names all the external modules (except itself) that are part of the base Suite (Note: This module does not declare itself, the DTD, any of the Book customization modules, or the Book-Tag-Set-specific Module of Modules which declares the Book customization modules.)
A Tag Set selects from the named modules by referencing the external parameter entities defined in the Suite Module of Modules. To include a set of elements (such as all the lists or the MathML elements), a DTD references the external parameter entity of the module that contains those elements.
<!ENTITY % modules.ent PUBLIC "-//NLM//DTD Archiving and Interchange DTD Suite Module of Modules v3.0 20080202//EN" "modules3.ent" >
bookandcoll-for-taglib3.dtd