Every NA project has a Default Language that can be configured to be any language. All resources in the resource library use this default language as a point of reference, the default language is the point from where translations will be taken and the language you develop your HMI in. When no other localised resource exists for a particular string, document or video, the default resource will be used. Therefore the default language is best to be defined as the most common language in your machine.

When entering translations in the resources, the default language is the first column of strings and contains every string within the project. Other columns can contain some, all or even none of the translations.

See Also:

Introduction to the NA series HMI
Understanding NA Resources
Translating An NA Project And Checking The Results