First of all, sorry for writing in English. I speak very little Swedish, but I am interested in how Scrabble is played in different European languages.
In most languages, you can't play acronyms or other words that can only be written with capital letters, and I understood that this rule was the same in Swedish.
However, this seems to be contradicted by the word lists provided on this site (specifically http://scrabbleforbundet.se/ordlistor/) which seem to allow a lot of such words (e.g. BB, BSE, BVC, DDT, DS, ECT, EQ, EU, HPV, IQ, KK, LCA, MVC, PH, PMS, PS, RNA, SM, SOS, TT, UD, USA, VM).
So what is the rule in Swedish Scrabble?