# OS NGD Structures

The following pages contain specific advice on how to make the most of the OS NGD Field Boundary data:

* [Field Boundary definition](https://docs.os.uk/osngd/using-os-ngd-data/field-boundary#field-boundary-definition)
* [Field Boundary Feature Type](https://docs.os.uk/osngd/using-os-ngd-data/os-ngd-structures/field-boundary/field-boundary-feature-type)
* [How Field Boundary data is created](https://docs.os.uk/osngd/using-os-ngd-data/os-ngd-structures/field-boundary/how-field-boundary-data-is-created)
* [Field Boundary attribution](https://docs.os.uk/osngd/using-os-ngd-data/os-ngd-structures/field-boundary/field-boundary-attribution)
* [Known limitations](https://docs.os.uk/osngd/using-os-ngd-data/os-ngd-structures/field-boundary/known-limitations)
* [Summary](https://docs.os.uk/osngd/using-os-ngd-data/os-ngd-structures/field-boundary/summary)