> ## 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.

# Checkmark field

> Add a Checkmark field to a Document skill, configure the checkmark type, and set field properties.

A checkmark is an area on a document where a special mark (usually a check mark or an X) is placed. Checkmarks indicate a choice — for example, a multiple-choice test answer.

## Add a Checkmark field

### Mark a checkmark on the document image

Click a checkmark (highlighted green on hover), or drag a rectangle around it. The new field appears in the data form with an auto-assigned name.

### Add an empty field and mark its region

Click **Add Checkmark** in the toolbar, and then drag a rectangle around the checkmark or click the checkmark.

<Tip>
  If the auto-assigned name isn't right, double-click the name in the data form, or click the name in **Field options** to rename the field.
</Tip>

### Add regions to an existing Checkmark field

Select the field in the data form, and then click the checkmark location on the document image.

<Note>
  You can only add regions to Checkmark fields of type **Square** (checkmarks in bounded square regions).
</Note>

## General properties

| Property           | Description                                                                                               |
| :----------------- | :-------------------------------------------------------------------------------------------------------- |
| **Field name**     | Unique within the skill. Cannot contain: `. , / : * ? " < > \|`. Maximum length: 90 characters.           |
| **Required field** | If enabled and the field is empty after extraction, the document goes to manual review with a rule error. |

## Checkmark type

Set the checkmark type based on how the mark is framed on the document:

| Type              | When to use                                                     |
| :---------------- | :-------------------------------------------------------------- |
| **Square**        | Checkmarks in bounded square regions (for example, checkboxes). |
| **Without frame** | Checkmarks on an unbounded white region.                        |

## Allow corrections

Enable **Allow corrections** to treat fully colored-in checkmarks as unchecked — used when an operator corrects a mark by filling it in (filled-in mark = undone).

<Note>
  **Allow corrections** works only for **Square** checkmarks.
</Note>

## Related topics

* [Checkmark group field](/vantage/documentation/skill-designer/document/adding-fields/checkmark-group)
* [Label documents in Skill Designer](/vantage/documentation/skill-designer/document/labeling-documents)
* [Add fields](/vantage/documentation/skill-designer/document/adding-fields/adding-fields)