Language to use for warnings and errors. action=query&meta=siteinfo&siprop=languages returns a list of language codes, or specify content to use this wiki's content language, or specify uselang to use the same value as the uselang parameter.
The database is currently locked to new entries and other modifications, probably for routine database maintenance, after which it will be back to normal.
The system administrator who locked it offered this explanation: Major Server Maintenance, Access wil be restored soon.
