A list of items.
A reference to a table where the items are described. The field "id" in the table is used for the value of the choice component.
The table column to be used to describe each item.
If set, it is possible to not have any value.
Display the choice in a list of checkbox or radiobox instead of a select.
Expanded item classes
Classes to apply to each item in an expanded choice.
Can the choice have multiple values ?