I think I shall have to accuse you of hemicentrism in your choice of time zones to specify.

I don't know what it means to a Scottish-Canadian, but this Kiwi-Canadian thinks it means "bid a 5 card suit if you've got it, else 6NT" (basically, looking for a source of tricks for 7). Of course it could also be some sort of 'super Baron' (an 'Earl'?) in which case 6H would be the call.