Category:Lang and lang-xx code promoted to ISO 639-1

This category is used to track and  templates where a three-character language subtag (ISO 639-2, -2T, ISO 639-3) has been internally promoted to an ISO 639-1 two-character subtag. Three-character subtags should be replaced with the equivalent two-character subtag. This category is used only by Module:Lang. Articles listed here are sorted by the three-character language subtag.

Where these promotions occur, a hidden message is also available. Editors who wish to see the messages may do so by updating their common or skin CSS stylesheet to include:
 * .lang-comment {display: inline !important;} /* show lang messages */