Returns the language code for the language used as the current user. This is the language actually used by TWiki Internationalization (e.g. in user interface).
The language is detected from the user's browser, unless some site/web/user/session-defined setting overrides it:
If the LANGUAGE preference is set, it's used as user's language instead of any language detected from the browser.
Avoid defining LANGUAGE at a non per-user way, so each user can choose his/her preferred language.
This is a PUBLIC DOMAIN Wiki. All original contributions are immediately placed in the PUBLIC DOMAIN. Posting of copyrighted material is strictly prohibited. Note: Please contribute updates to this topic on TWiki.org at TWiki:TWiki.VarLANGUAGE