To support language localization on application level:

In your App's properties, you may add your own messages. For example, we can have two messages in Chinese and English for the key "app.hello".


Figure 1: Listing of messages in your app's properties

In your Userview, you may access the value by using this internationalization hash variable, #i18n.app.hello#.

Figure 2: Using Internationalization hash variable in the Userview Builder.