Extension Properties editor form
You can use the Extension Properties editor form to manage or modify extension properties for form components. This form provides a structured interface for defining key/value pairs or entering properties in a free text field, that is formatted in JSON and is wrapped within the EXTENSIONPROPERTIES keyword.
The Extension Properties editor form can be used to edit extension properties efficiently by handling substitution keywords such as C(), P(), and V(), which are resolved at form initialization. These properties are stored in the LayoutAttributes column for the FormComponents table.