Boolean (boolean)

{
    "fields": {
        "name": { "…": "as before" },
        "age": { "…": "as before" },
        "married": {
            "cms": {
                "column": true
            },
            "optional": true,
            "type": "boolean"
        }
    }
}

The boolean married also appears in the list (column) and is voluntary (optional).

Parameters

Parameter	Meaning
optional	field may be missing (default false)
localizable	value per language