Apologies if this is a very basic question.....

Where will I find out my booking reference and ticket numbers for a domestic JAL flight?

I've just booked a domestic flight HND - HIJ in economy on the Japan Airlines website, and (I think!) have paid for it ie have put in my credit card number and "purchased" it. I have been presented with a page saying "purchase complete" and it gives me a 4 digit reservation number; but I can't find anything else?

Should I just save this reservation number and leave it at that, or should I expect to receive an 6 digit reference (as I usually would with British Airways and other airlines) and/or ticket numbers?

Thanks - just a bit confused about the whole booking process, and wary that I've not been given the usual 6 digit reference