<keywords>

<keywords> contains a list of keywords or phrases identifying the topic or nature of a text. 2.4.3 The Text Classification
Module header — 2 The TEI Header
In addition to global attributes In addition to global attributes
scheme identifies the controlled vocabulary within which the set of keywords concerned is defined.
Status Required
Datatype 

<rng:ref name="data.pointer"/>
data.pointer
Values Usually this will indicate an external website or other location where the scheme is documented.
Used by
textClass
May contain
core: list term
Declaration 

<rng:element name="keywords">
 <rng:ref name="att.global.attributes"/>
 <rng:attribute name="scheme">
  <rng:ref name="data.pointer"/>
 </rng:attribute>
 <rng:choice>
  <rng:oneOrMore>
   <rng:ref name="term"/>
  </rng:oneOrMore>
  <rng:ref name="list"/>
 </rng:choice>
</rng:element>
element keywords
{
   att.global.attributes,
   attribute scheme { data.pointer },
   ( term+ | list )
}
Example
<keywords scheme="http://classificationweb.net">
 <list>
  <item>Babbage, Charles</item>
  <item>Mathematicians - Great Britain - Biography</item>
 </list>
</keywords>