> For the complete documentation index, see [llms.txt](https://docs.os.uk/osngd/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.os.uk/osngd/code-lists/code-lists-overview/siteextentdefinitionvalue.md).

# siteextentdefinitionvalue

This code list is used in association with the Extent Definition attribute which is present within the Site Feature Type. The code list defines the geometry confidence level for the nature of extent that a particular site may have.

| Label                       | Definition                                                                                                                                                 |
| --------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Auto-Defined Complete       | Feature has been improved using an automatic algorithm where the results are expected to be good but may have some artefacts.                              |
| Manually Defined Complete   | Feature has an extent that has been manually inspected and is complete to the best knowledge of the editor.                                                |
| Manually Defined Incomplete | Feature has an extent that is recognised as incomplete, typically where the underlying data does not provide sufficient detail to capture the full extent. |


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