One controversy in the English Wikipedia concerns which national variety of the English language is to be preferred, with the most commonly advocated candidates being American English and British English.[29] Perennial suggestions range from standardizing upon a single form of English to forking the English Wikipedia project. A style guideline states, "the English Wikipedia has no general preference for a major national variety of the language" and "an article on a topic that has strong ties to a particular English-speaking nation uses the appropriate variety of English for that nation".[30] An article should use spelling and grammar variants consistently; for example, color and colour are not to be used in the same article, since they represent American and British English, respectively. The guide also states that an article must remain in its original national variant. There has been a similar issue in the Chinese-language Wikipedia concerning regional differences in writing. Efforts toward a language fork for Portuguese Wikipedia have failed, but those regarding Norwegian Wikipedia succeeded. Andrew Lih wrote that the English Wikipedia "didn't have the chance to go through a debate over whether there should be a British English Wikipedia or an American English Wikipedia" because the English Wikipedia was the original edition.[31][clarification needed] Editors agreed to use U.S. spellings for primarily American topics and British spellings for primarily British topics. In 2009 Lih wrote, "No doubt, American spellings tend to dominate by default just because of sheer numbers."[32]