Currently in the language content from the colonial sources (Alvarado currently only one), the @xml:lang values are "mix-alv" which is not valid as it doesn't conform to BCP 47. There is no language tag for Colonial Mixtec thus the ISO 639 tag must begin with "nds" (for languages w/o tags) and be extended as follows: "nds-x-colmix". This will stand for "colonial mixtec"
Currently in the language content from the colonial sources (Alvarado currently only one), the @xml:lang values are "mix-alv" which is not valid as it doesn't conform to BCP 47. There is no language tag for Colonial Mixtec thus the ISO 639 tag must begin with "nds" (for languages w/o tags) and be extended as follows: "nds-x-colmix". This will stand for "colonial mixtec"