!!! Overview
[{$pagename}]

!! [JSON Web Token Claims]
[{$pagename}] is the [End-User|User]'s [{$pagename}], represented as a [BCP 47] [RFC 5646] language tag. 

This is typically an ISO 639-1 Alpha-2 [ISO 639]‑1 [Language Code] in __lowercase__ and an [ISO 3166-1 alpha-2] [Country Code] in __uppercase__, separated by a dash. 

For [example], 
* en-US 
* fr-CA. 
As a compatibility note, some implementations have used an underscore as the separator rather than a dash, for example, en_US; [Relying Parties|Relying Party] [MAY] choose to accept this locale syntax as well.

!! More Information
There might be more information for this subject on one of the following:
[{ReferringPagesPlugin before='*' after='\n' }]