An external module in the Archiving and Interchange DTD Suite.
Declares the Phrase Class elements, that is, names the inline, subject-specific elements. At the time of DTD creation, there was only one, but it had an attribute to name the type. If more specific subject words (such as “gene”) are added to later version of this DTD, they would be added to the %phrase.class; entity.
<!ENTITY % phrase.ent PUBLIC "-//NLM//DTD Archiving and Interchange DTD Suite Subject Phrase Class Elements v1.0 20021201//EN" "phrase.ent" >