From TrainzOnline

The following is a full list of the currently supported language suffix codes.

username-cn	Chinese
username-cz	Czech
username-nl	Dutch
username-fr	French
username-de	German
username-hu	Hungarian
username-it	Italian
username-pl	Polish
username-ru	Russian
username-es	Spanish

See Also

• HowTo/Localize an Asset
• "Username" tag
• "Description" tag
• "String-table" container