RT queue name

Hello list,

            I would like to create some new queues in our RT. And I 

have a question concerning the format/limitations of a queue name :

  1. Can queue name contain spaces ?

  2. Can it contain local characters (for example existing in Polish
    alphabet ?)
    3 How long could be queue name string ?

                             I have looked for the answer among others 

in RT Essentials, but I have found only advice to avoid special characters
in queue name.

Best regards