“CAPTCHA” field type field has following list of additional options for configuration: 
| Option | Description | Values |
|---|---|---|
| CAPTCHA Type | allows to choose type of CAPTCHA | value from drop-down list: Captcha (symbolic), Numeric Captcha and reCAPTCHA |
| Display Label | allows to define field label that will be displayed on the site frontend for visitors | any text value |
| Placeholder | allows to specify a short hint that describes the expected value of the field and displayed inside the field | any text value NB! Doesn’t display for reCAPTCHA |
| Field Key | allows to get unique field key that can be used for different development purposes | read-only autogenerated value |
| CSS Class | allows to specify CSS class name that will be added to the field wrapper block and can be used for different development purposes | any text value (several class names should be separated by space) |
| Description | allows to add text note below the field | any text value |
You can change CAPTCHA type from the drop-down list as displayed on the image below: 
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