CS.LANG Coded Simple Value - Flavor Language Codes; The language is compliant to RFC 3066 (Tags for the Identification of Languages ). The format for the language to describe is ss [-CC] where ss stands for the language tag, according to ISO 639-1 and CC for the optional country code, ISO-3166 alpha-2. The resulting language indicator is not case sensitive.

Datatype Release 1: CS.LANG

Registered Attributes and Child Elements

@Attribute / Element	Cardinality	Datatype
@code	optional	cs
@nullFlavor	optional	cs

The following rules are defined in the base core schematrons.

Rule ID: CS.LANG

Extends Rule(s): CS

Constraints

dtr1-1-CS.LANG: @code SHALL be of format ss-CC with ss for language code (conform ISO-639-1) and optional CC for country code (conform ISO-3166 alpha-2)

The following rules are defined in the strict mode of core schematrons.