Language file
A language file is a text file containing a header and translation keys (transkeys). The header defines language-specific parameters that are used to identify the language when importing the file into the application.
The header of a language file contains information about the specific language as identified by its Code and Description.
 | For more information about the information displayed in the header, refer to File header fields. |
The combination of language, country and variant makes up the regional settings.