REQ_83.1: The format of a <language_type> shall be:<language_type> ::= langcode ["-" subcode]*where the langcode is either:•

The format of a shall be: ::= langcode ["-" subcode]*where the langcode is either:• 2-letter codes as defined by ISO 639-1• 3-letter codes as defined by ISO 639-2• The value i is reserved and used as a prefix for registrations defined byInternet Assigned Numbers Authority (IANA)• The value x is reserved and used as a prefix for private useand the subcode is:• 2-letter subcodes are ISO 3166-1 alpha –2 country codes• subcodes of from 3 to 8 letters are registered with IANAISO 639-2 specifies two code sets (bibliographic and terminology) for thelanguage code. Either code set may be used. The langcode and subcode is caseinsensitive. SCORM recommends that the language_type be represented with thefollowing format:• langcode is normally given in lower case, and• subcodes (if any) are normally in upper case.The langcode and subcodes shall have lengths ranging between a minimum of 1character to a maximum of 8 characters.ADL Note: Refer to Appendix B for a listing of required language codes definedby ISO 639-1 and ISO 639-2, and IANA.