> ## Documentation Index > Fetch the complete documentation index at: https://docs.abbyy.com/llms.txt > Use this file to discover all available pages before exploring further. # IFieldControl > IFieldControl gives scripts access to a document field control on a FlexiCapture form: expand or collapse fields, lock editing, and walk the control tree. Represents a control of the document field. The object returns `null` for fields not involved in distributed verification. ## Properties | Name | Type | Access | Description | | ------------------- | ------------------------------------------------------------------------------------- | ---------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | DeviceRect | [IShellRect](/flexi-capture/appendix/scripts-shell/i-shell-rect) | Read-only | The rectangle of the control. | | Field | [IField](/flexi-capture/appendix/scripts/ifield) | Read-only | The document field. | | FieldFullName | string | Read-only | The full name of the field. | | FieldRegionControls | [IFieldRegionControls](/flexi-capture/appendix/scripts-shell/i-field-region-controls) | Read-only | The collection of field regions of the document. For fields that do not have regions, `null` is returned. | | First | IFieldControl | Read-only | The first child control. | | FormWindow | [IFormWindow](/flexi-capture/appendix/scripts-shell/iformwindow) | Read-only | The form window. | | IsExpandable | bool | Read-only | If the property is set to `true`, the field can be expanded and collapsed on the form. Use this property to check whether the field is expandable before applying the `IsExpanded` property to it. For group fields, the property is `true`. | | IsExpanded | bool | Read/write | Indicates whether the group field is expanded. Lets you collapse or expand the field. | | IsUserReadOnly | bool | Read/write | Specifies whether the field is editable. If the property is set to `true`, editing the field is not allowed. If the property is set to `false`, the ability to edit the field depends on the Document Definition settings. | | Last | IFieldControl | Read-only | The last child control. | | Next | IFieldControl | Read-only | The next control. | | Parent | IFieldControl | Read-only | The parent control. | | Prev | IFieldControl | Read-only | The previous control. | | TextEditor | [ITextEditor](/flexi-capture/appendix/scripts-shell/itexteditor) | Read-only | The field editor. For inactive fields, `null` is returned. |