This element holds keywords or keyword codes that identify the category ro categories into which the article falls within the Taylor & Francis classification system. The is always a main category, and at least two sub-categories (of which one must be designated the "primary" sub-category), though the element used for other sub-categories may be empty as in the example belo. Finally, there may also be a number of topics and sub-topics:

<search>
  <category>9</category>
  <primarysubcategory>92</primarysubcategory>
  <subcategory/>
  <topic>757</topic>
  <subtopic>2829</subtopic>
</search>

This is not to be confused with the keywords that an author might identify (see <keywordset>

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: <meta>

The DTD model for this element:

--+(sequence)
  |  
 category  -- TEXT
  |  
 primarysubcategory  -- TEXT
  |  
 subcategory (repeatable) -- TEXT
  |  
 topic (optional and repeatable) -- TEXT
  |  
 subtopic (optional and repeatable) -- TEXT

The DTD contains the following element and attribute definitions (note that embedded links are to definitions within the DTD page of this guide):

<!ELEMENT search                         (category, primarysubcategory, subcategory+, topic*, subtopic*)>
<!ATTLIST search
               %a-group-CommonIDAttrs;>

Defined in DTD section Metadata : Article Metadata : Search

Common Optional ID Attributes (a-group-CommonIDAttrs)