> 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/hydrology/field.fld/name.md).

# name (field.fld)

The name of the field is a primary key referenced by [field](/io-docs/introduction-1/hydrologic-response-units/hru-data.hru/field.md) in [**hru-data.hru**](/io-docs/introduction-1/hydrologic-response-units/hru-data.hru.md) and [field ](/io-docs/introduction-1/routing-units/untitled/field.md)in [**rout\_unit.rtu**](/io-docs/introduction-1/routing-units/untitled.md)**.**