Thread:Support/Problem with language code 'no' in the Babel extension/reply (5)

ISO 639-3 imho clearly supports you, Nike. From their Website:

Btw., there are more Norwegian varieties according to a variety of sources:
 * Norwegian Sign Language (nsl)
 * Norwegian Rijksmål (gradually becoming historical now in most areas, close to Danish)
 * Høgnorsk (kind of predecessor of Nynorsk)
 * Traveller Norwegian (rmg)
 * Old Norse (non, historical predecesor of Nowegian, Danish and others)