# 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. |


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.os.uk/os-downloads/products/land-and-terrain-portfolio/os-mastermap-sites-layer/os-mastermap-sites-layer-technical-specification/enumerations/extentdefinitionvalue.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.