This filter can be used to filter whether the source and target values are a match.
Use this filter to modify the element after which the AJAX spinner will be inserted for AJAX-enabled forms. By default, it will be the next button (for multi-page forms) or submit button.
This filter can be used to add custom options for each choice.
This filter can be used to modify the value returned by a field merge tag before it is used by a number field calculation or calculated product field.