@Andres Muniz (andresmp) - CA is the Canada locale and ZA is South Africa (taken from it's name in Dutch: Zuid-Afrika). See http://en.wikipedia.org/wiki/ISO_3166-1_alpha-2 but don't confuse them with the two-letter language codes (such as en) described at http://en.wikipedia.org/wiki/ISO_639-1 The two are combined to make IETF language tags you listed, as described at http://en.wikipedia.org/wiki/IETF_language_tag
@Andres Muniz (andresmp) - CA is the Canada locale and ZA is South Africa (taken from it's name in Dutch: Zuid-Afrika). See http:// en.wikipedia. org/wiki/ ISO_3166- 1_alpha- 2 but don't confuse them with the two-letter language codes (such as en) described at http:// en.wikipedia. org/wiki/ ISO_639- 1 en.wikipedia. org/wiki/ IETF_language_ tag
The two are combined to make IETF language tags you listed, as described at http://