# ExtentDefinitionValue

### FunctionalSite feature

Defines the values for the nature of extent that a particular site may have.

| Value             | Description                                                                                                                                                 |
| ----------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Fully Defined     | The supplied extent is, as far as can be ascertained, fully defined in this release.                                                                        |
| Partially Defined | The extent is known to be incomplete due to a known issue with the extent or because of restrictions to capture.                                            |
| Undefined         | The extent is unknown or has not been defined in this release. This will also apply to sites where their full definition is underground or wholly obscured. |