I've got Iso Coated v2 (ECI) from my printer, this is the profile I assign my print documents ready to send to the print company. But I don't understand (or at least I did know, but have totally forgotten!) what a working space is. What does a working space do? I need help choosing a working space to go with the profile I mentioned above. I think it's meant to be either FOGRA39 or ECI RGB v2, but a list would be helpful... Thanks.