All of the resources for the built-in controls are included in the standard
Data Director
IDD resource bundles. Localization of these controls is done as part of the process of localizing the IDD application. IDD applications and IDC controls share context in the web browser. When a user selects a language in the IDD application, that selection is saved as a preference that will carry over to IDC controls. For more information about localizing IDD applications, see the
Multidomain MDM Data Director Implementation Guide