Internationalization functionality is implemented in Commerce Reference Store through the Store.EStore.International module, located in <ATG10dir>/CommerceReferenceStore. If you choose the Internationalization add-on when configuring Commerce Reference Store through CIM, this module is included for you in the resulting EAR files, along with the required data and database schema changes. The International module is necessary for Commerce Reference Store sites that support multiple languages or multiple countries. If you do not install the International module, your production instance of Commerce Reference Store will include the English versions of ATG Store US and ATG Home only. You will not see ATG Store Germany or the Spanish translations for ATG Store US and ATG Home.