Namespace declaration for UnityScript or Unity Javascript

I don't think you can. O_O In the linked article on $$anonymous$$SDN below, "namespace" is clearly available as a keyword in C#, but it doesn't figure in the list of UnityScript keywords available on the wiki. :-/

If this is possible in UnityScript, it seems it must be done with some other mechanic than the namespace keyword.

http://msdn.microsoft.com/en-us/library/z2kcy19k%28v=vs.80%29.aspx http://www.unifycommunity.com/wiki/index.php?title=UnityScript_$$anonymous$$eywords