#### 3.1.5 Classification elements

Classification elements support managing metadata. Those in the Subject Scheme map are used to define controlled values, and to bind them to DITA attributes as enumerations. Those declared in the classification domain are used in other maps to classify content according to the scheme.

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Next Topic: 3.1.5.1 Subject scheme maps

Parent Topic: Base elements

Child Topics:

3.1.5.1 Subject scheme maps

3.1.5.2 Classification domain elements

Sibling Topics:

3.1.1 Topic elements

3.1.2 Map elements

3.1.3 Metadata elements

3.1.4 Domain elements

3.1.6 Specialization elements

3.1.7 Legacy conversion elements

3.1.8 DITAVAL elements