I have the 30 day trial of CS5 Design Standard installed on my Mac. A friend purchased CS5 Design Standard for PC, but has decided not to keep it. They have not registered it with their key yet. Will their key (for PC) work on my Mac version?
As I remember from looking this up a couple of months ago is that yes, they are, though if you ask nicely enough they might transfer it, and volume licenses (ex. if you get it from a school) are cross-platform.