> For AI agents: the complete documentation index is available at /llms.txt, the full documentation bundle is available at /llms-full.txt.

# FileFieldType

Specifies the type of interaction or data entry required for this field. Different types have
different behaviors and validation rules in the signing interface.

**Possible values:** `Seal`, `Signature`, `Check`, `Radio`, `SingleLine`, `Number`, `Date`

**Example:**

```json
"Signature"
```