In Danish, Norwegian and Swedish, ⟨w⟩ is named double-v and not double-u. In these languages, the letter only exists in old names, loanwords and foreign words. (Foreign words are distinguished from loanwords by having a significantly lower level of integration in the language. ) It is usually pronounced /v/, but in some words of English origin it may be pronounced /w/. The letter was officially introduced in the Danish and Swedish alphabets as late as 1980 and 2006, respectively, despite having been in use for much longer. It had been recognized since the conception of modern Norwegian, with the earliest official orthography rules of 1907. ⟨W⟩ was earlier seen as a variant of ⟨v⟩, and ⟨w⟩ as a letter (double-v) is still commonly replaced by ⟨v⟩ in speech (e. g. WC being pronounced as VC, www as VVV, WHO as VHO, etc. ) The two letters were sorted as equals before ⟨w⟩ was officially recognized, and that practice is still recommended when sorting names in Sweden. In modern slang, some native speakers may pronounce ⟨w⟩ more closely to the origin of the loanword than the official /v/ pronunciation.