Using “en” instead of “English” for your Xcode project’s development regionVarious pieces of Mac OS X and iPhone documentation have said for quite a while that the “preferred” method is now to use ISO-639-1 (two-letter) or ISO-639-2 (three-letter) language codes codes for localization purposes. Out of the box, Xcode’s project templates still use “English” rather than “en” as their default localization. How can you use the ISO-639 language codes everywhere in your project
