The list widget allows you to create a repeatable item in the UI which saves as a list of widget values. map a user-provided string with a comma delimiter into a list. You can choose any widget as a child of a list widget—even other lists.
- **Name:** `list`
- **UI:** if `fields` is specified, field containing a repeatable child widget, with controls for adding, deleting, and re-ordering the repeated widgets; if unspecified, a text input for entering comma-separated values
- **Data type:** list of widget values
- **Options:**
-`default`: if `fields` is specified, declare defaults on the child widgets; if not, you may specify a list of strings to populate the text field