Setting the default language via url var

[brothersun]

I would like to be able to set the default language for a particular user session by adding a variable (eg. "?lang=fr") to the url. Is something like this possible (in v. 3.6.2)? If not, is there some other way to do it?

[Wayne Luke]

It would be ?langid=X where X is the id number of the language.

[brothersun]

Awesome! Thank you!