The New Translation dialog allows adding a new translation for your template. It can be accessed via the New Translation button in the Review tab.
Translations allow you to create a multi-language template. You will need to specify a text file for each language. The file will contain translations for each paragraph in the template in the selected language.

The following dialog appears:

Select the language and the associated language file. You may optionally copy the translations from an existing locale.
You may switch between translations using the Active Translation button.
Note: In the Design View, the document appears in its original non-translated form. The active translation is only visible in the output or Print Preview.