|Subject:||normalize_tag(): ? territory xl to 419 and strip territory xn ?|
Prompted by this doc from translation company: XN and XL are not ISO country codes. Instead, they are user-‐assigned code elements as specified in clause 8.1.3 of ISO 3166-‐1. XN is used to identify a "Neutral" or "iNternational" locale. (The modifier "Mid-‐Atlantic" is not recommended.) XL is used to identify the region conventionally known as "Latin America." Alternatively, the United Nations code 419 for "Latin America and the Caribbean" can be used.