Hi,
AFAIK there is no document on mediawiki.org which says this definitively yet. what order are the following things consulted in, in finding a relevant system message?
XX - wiki's default language (not en, for argument's sake) YY - user's language preference (not en or XX) ZZ - language code specified in the URL as uselang=ZZ (not en, XX or YY)
A MessagesEn.php B MessagesXX.php C MessagesYY.php D MessagesZZ.php E MediaWiki:Message F MediaWiki:Message/XX G MediaWiki:Message/YY H MediaWiki:Message/ZZ ??? any others???
(assume also for interest's sake that a particular one may not be defined, so it has to keep looking)
Is this the order? H E D B A
thanks, Brianna