<subcategory> (Sub Category) Description .email comment.
Description
This required element contains a name or code representing a non-"primary" sub-category classification under which the article should be filed. Although it is required, it may be an empty element if there are no sub-categories.
Parent Elements
The elements listed below may directly contain this element. They are "parent" elements. Elements in referenced groups are included, up to two levels of group nesting.
Parent elements: <search>
Model Diagram
The DTD model for this element:
 (only text allowed) 
DTD Definition
The DTD contains the following element and attribute definitions (note that embedded links are to definitions within the DTD page of this guide):
<!ELEMENT subcategory                    (#PCDATA)>
<!ATTLIST subcategory
               %a-group-CommonIDAttrs;>
.
Defined in DTD section Metadata : Article Metadata : Search
General Attributes (shared with other elements)
Common Optional ID Attributes (a-group-CommonIDAttrs)