This is a draft.

The Field Select setting, field-select, is an advanced setting type for selecting a specific field from the current list of fields in the form. This setting can be used as a field setting, action setting, or form setting. New fields …

The Option Repeater setting, option-repeater, is an advanced setting type for adding a dynamic number of inputs to a setting. Formatted as a fieldset, options can be added, re-ordered, and removed from the repeater. The following example shows a basic option-repeater definition. …