Creates a pop-up menu. This element must be used within CKForm or HTML form.
Required attribute: list
|escape:||Escapes HTML control characters in the items of the list if the "escape" is true. The default value is true.|
|list:||Array which is iterated through.|
|values:||Array which is value for each "value" attributes of <option> elements.|
|default:||The first item if no item is selected.|
|selected:||Item that are chosen from the selection list.|
|enabled:||If the value is true, the element appears but is not active.|