I always believed it was a universal scandinavian code .
Something like EEC is for europe (west)
Portugal/Spain/Germany makes no sense

portugal and spain i can understand but Germany??
Germans always have there stuff translated in German only no english also it makes no sense in transporting.
Spain and portugal are neighbours but Germany is not close by for transport.
SIDE NOTE: why doesn't give nintendo explanation about these things??/
I mean if you ask a normal company a question the respond normal and give awnsers..
(unless its a company secret

)
But nintendo allways acts like there company is area51