> For the complete documentation index, see [llms.txt](https://swatplus.gitbook.io/io-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://swatplus.gitbook.io/io-docs/introduction-1/routing-units/untitled/field.md).

# field

The pointer to the field file is a foreign key referencing [name](/io-docs/introduction-1/hydrology/field.fld/name.md) in [**field.fld**](/io-docs/introduction-1/hydrology/field.fld.md).