"Damien Cassou" <damien.cassou at gmail.com> wrote in message
> If I understand correctly, there is no problem if you own both the
> package containing the class and the package containing the trait.

I meant to ask about using traits (belonging to me or, less likely, to 
someone else) and applying them to a class that did not belong to me. I 
understand Adrian's answer, and also understand the scenario you mention.

Thanks - Sophie